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Found 70 results

  1. Version

    1,004 downloads

    -> IMPROVED VERSION OF THIS FILE IS AVAILABLE HERE <-- This 3D printable model of a human heart was generated from a contrast enhanced CT scan. The model comes in 4 slices, and demonstrates the detailed anatomy of the human heart in exquisite detail. Each slice stacks on top of the prior slice to form a complete human heart. Individual slices show the detailed cardiac anatomy of the right and left ventricles, and right and left atria, and outflow tracts. Perfect for educational purposes. Download this model for free and 3D print the model yourself! If you find this and other free medical models available for download on Embodi3d.com useful, please give back to the community by uploading and sharing a medical model of your design.

    $4.99

  2. Version 1.0.0

    87 downloads

    This STL file of a highly detailed dental scan shows the bony anatomy of the maxilla, mandible and facial structures in great detail. This model was created using the democratiz3D service. incisix, H, 150

    Free

  3. Version 1.0.0

    48 downloads

    This 3D printable STL file contains a model of the torso, neck, and arms was derived from a real medical CT scan and shows anatomic structures in great detail. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  4. Version 1.0.0

    18 downloads

    This 3D printable STL file contains a model of the right shoulder was derived from a real medical CT scan. It shows the pectoralis, deltoid, biceps, and triceps muscles, as well as musculature of the chest wall. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  5. Version 1.0.0

    8 downloads

    This 3D printable STL file contains a model of the muscles of the chest and back was derived from a real medical CT scan. The pectoralis, latissimus dorso, scalene and other muscles are shown in great detail. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  6. Version 1.0.0

    9 downloads

    This 3D printable STL file contains a model of the left shoulder was derived from a real medical CT scan. It shows the deltoid, pectoralis, triceps, and biceps muscles in great detail. Also, the muscles of the chest wall and ribs are also shown. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  7. Version 1.0.0

    31 downloads

    This 3D printable STL file contains a model of the torso, including the spine, shoulders and arms, pelvis, and proximal legs. It was derived from a real medical CT scan. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  8. Dr. Mike

    Skull base to hips

    Version 1.0.0

    23 downloads

    This 3D printable STL file contains a model was derived from a real medical CT scan. It includes all of the bony anatomy from the skull base to the hips, including the spine, pelvis, rib cage and arms This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  9. Dr. Mike

    Skull base and jaw

    Version 1.0.0

    15 downloads

    This 3D printable STL file contains a model of the skull base was derived from a real medical CT scan. Some artifact from dental fillings is present. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  10. Dr. Mike

    Cervical spine

    Version 1.0.0

    11 downloads

    This 3D printable STL file contains a model of the cervical spine was derived from a real medical CT scan. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  11. Version 1.0.0

    19 downloads

    This 3D printable STL file contains a model of the right shoulder was derived from a real medical CT scan. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  12. Dr. Mike

    Rib cage

    Version 1.0.0

    43 downloads

    This 3D printable STL file contains a model of the rib cage was derived from a real medical CT scan. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  13. Dr. Mike

    Thoracic spine

    Version 1.0.0

    18 downloads

    This 3D printable STL file contains a model of the thoracic spine was derived from a real medical CT scan. This model was created using the democratiz3D free online 3D model creation service. QIN-HN-01-0003

    Free

  14. Version 1.0.0

    39 downloads

    This 3D printable STL file contains a model of the thoracic and lumbar spine was derived from a real medical CT scan of a 60 year old woman. It shows the spinal anatomy in great detail. This model was created using the democratiz3D free online 3D model creation service. STS007

    Free

  15. Dr. Mike

    cervical spine STL file

    Version 1.0.0

    34 downloads

    This 3D printable STL file contains a model of the cervical spine was derived from a medical CT scan and shows the spine in great detail. This model was created using the democratiz3D 3D model creation service 0522c0883

    Free

  16. Dr. Mike

    Skull STL, high quality.

    Version 1.0.0

    60 downloads

    This 3D printable STL file contains a model of the skull was derived from a medical CT scan. The patient is missing most of his teeth. This model was created using the democratiz3D 3D model creation service 0522c0883

    Free

  17. Version 1.0.0

    0 downloads

    This is a 3D printable STL model of the entire spinal column, including cervical, thoracic, and lumbar regions derived from a CT scan. STS_003. This model was created using the democratiz3D service.

    $9.99

  18. embodi3d

    Thoracic spine 1

    Version

    77 downloads

    This 3D printable STL file of the thoracic spine was generated from real CT scan data and is thus anatomically accurate as it comes from a real person. It shows detailed anatomy of the thoracic spine, including the relationship with the ribs. Download is free for registered members. This file was originally created by Dr. Bruno Gobbato, who has graciously given permission to share it here on Embodi3D. Modifications were made by Dr. Mike to make it suitable for 3D printing. The file(s) are distributed under the Creative Commons Attribution-NonCommercial-ShareAlike license. It can't be used for commercial purposes. If you would like to use it for commercial purposes, please contact the authors. Technical specs: File format: STL Manifold mesh: Yes Triangles: 220104

    Free

  19. In this tutorial we will learn how to use the free medical imaging conversion service on embodi3D.com to create detailed anatomic muscle and skin 3D printable models in STL file format from medical CT scans. Muscle models show the detailed musculature by subtracting away the skin and fat. Even when created from a scan of an obese person, the model looks like it comes from a bodybuilder, Figure 1A. Skin models show an exact replica of the skin surface. The finest details are captured, including wrinkles and veins underneath the skin. Hair however is not captured in a CT scan and thus the model does not have any hair, Figure 1B. Figure 1A (left): A muscle 3D printable model. Figure 1B (right): A skin 3D printable model These models can be used for a variety of purposes such as medical and scientific education and research. Additionally, the skin models can be used to re-create a person's likeness in 3D from a medical scan. If you have had a CT scan of the head, you can create a lifelike replica of your head. You can create replicas of your friends, family, or even pets if they have had a medical CT scan. Alternatively, if you have a loved one who passed away but had a CT scan prior to death, you can use the scan to re-create an exact replica of their face. Even scans that are years old can be used for this purpose. Some people may consider this to be a little creepy, so if you are considering doing this think carefully first. Before proceeding please register for an embodi3D.com account if you haven't already. You will need an account to use the service. It is highly recommended that you download the associated file pack for this tutorial so that you can follow along with the exact same files that are used in this tutorial. >> DOWNLOAD THE FREE FILE PACK BY CLICKING HERE << If you are interested in learning how to use the free embodi3D.com service, see my prior tutorials on creating bone models, processing multiple models simultaneously, and sharing and selling your models on the embodi3D.com website. If you are interested in converting your own CT scan or that of a friend or family member, you can go to the radiology department of the hospital or clinic that did the scan and ask for the scan to be put on a CD or DVD for you. Figure 2 shows the radiology department at my hospital, called Image Management, and the CDs that they give out. Most radiology departments will have you sign a written release and give you a CD or DVD for free or with a small processing fee. If you are a doctor or other healthcare provider and want to 3D print a model for a patient, the radiology department can also help you. There are multiple online repositories of anonymized CT scans for research that are also available. If you have downloaded the file pack for this tutorial, example CT scans are included Figure 2A, the Image Management (radiology) department at my hospital, where you can pick up a DVD of your CT scan as shown in Figure 2B (right). My hospital does this for free, but some may charge a trivial fee. PART 1: Creating a Muscle STL model from NRRD File Before we begin please bear in mind that this process only works for CT scan images. It will not work for MRI images. Before proceeding please check that the scan you wish to convert is a CT (CAT) scan! Step 1: Convert Your CT scan to an Anonymized NRRD File with 3D Slicer Open 3D Slicer. If you don't have the software program you can download it for free from slicer.org. Once Slicer has opened, take the folder from the download pack that is called STS_004. This folder contains anonymized DICOM images from a CT scan of the legs of a 24-year-old woman who had a muscle tumor. Drag and drop the entire folder onto the Slicer window, as shown in Figure 3. Slicer will ask you if you want to load the images into the DICOM database. Click OK. Slicer will also ask you if it should copy the images into the database, click Copy. Slicer will take about one minute to load the scanned. Figure 3: Drag-and-drop the STS_004 DICOM folder from the file pack onto the Slicer window Next, load the scan into the active wor king area in slicer. If the DICOM browser is not open, click on the Show DICOM browser button, as shown in Figure 4. Click on the STS_004 patient and series, and click the Load button, as shown in Figure 4. The leg CT scan will now load into the active seen within Slicer, as shown in Figure 5. Figure 4: Open the DICOM browser and load the study into the active seen Figure 5: The leg CT scan is shown in the active seen Step 2: Trim the Scan so that only the Right Thigh is included. Click on the Volume Rendering module from the Modules drop-down menu as shown in Figure 6. Turn on volume rendering by clicking on the eyeball button, as shown in Figure 7. Then, center the model in the 3D pane by clicking on the crosshairs button, Figure 7. If you don't have the same window layout as shown in Figure 7, you can correct this by clicking on the Four-Up window layout from the window layout drop-down menu, as shown in Figure 8. Figure 6: Turn on the volume rendering module Figure 7: Center the rendered volume. Figure 8: Make sure you are in the Four-Up window layout Next we are going to crop the volume so that we exclude everything other than the right knee and thigh. From the modules menu, select All Modules, Crop Volume, as shown in Figure 9. Turn on ROI visibility by clicking on the eyeball button, as shown in Figure 10. Then, move the region of interest box so that it only encapsulates the right thigh, as shown in Figure 10. You can adjust the size of the box by grabbing on the colored circular handles and moving the sides of the box as needed. Figure 9: The Crop Volume module. Figure 10: Turning on and adjusting the crop volume ROI (Region Of Interest) Once the crop volume ROI is adjusted to the area that you want, perform the crop by clicking on the Crop button, Figure 11. Figure 11: the Crop button. The new, smaller volume that encompasses the right fight and knee has been assigned a cryptic name. The entire scan had a name of "2: CT IMAGES – RESEARCH," and the new thigh volume has a name "2: CT IMAGES-RESEARCH-subvolume-scale_1." That's a mouthful and I want to rename it to something more descriptive. I'm going to select the Volumes module, and then select the "2: CT IMAGES-RESEARCH-subvolume-scale_1" from the Active Volume drop-down menu. Then, from the same drop-down menu I'm going to select "Rename Current Volume". Type in whatever name you want. In this case I'm choosing "right thigh." Figure 12: Renaming the newly cropped volume. Step 3: Save the right thigh volume as an anonymized NRRD file. Click on the Save button in the upper left-hand corner. The save window is then shown. All the checkboxes on the left except for the one that corresponds to the right by. Make sure the file format for this line says NRRD (.nrrd). Make sure you specify the proper directory you want the file to be saved as. When you are satisfied click on save. This is demonstrated in Figure 13. In the specified directory you should see a called right thigh.nrrd. Figure 13: The save file options. Step 4: Upload the NRRD file to embodi3D.com Make sure you are logged into your embodi3D.com account. Click on Imag3D from the nav bar, Launch App. Then drag-and-drop your NRRD file onto the upload pain, as shown in Figure 14. Figure 14: Uploading the NRRD file to embodi3D.com. While the file is uploading, fill in the required fields, including the name of the uploaded file, a brief description, file privacy, and license type. Except the terms of use. next, turn on Imag3D processing. Under operation, select "CT NRRD to Muscle STL." Leave the threshold value unchanged. Under quality, select medium or high. Specify your privacy preference for your output STL file. If you are going to share this file, you can choose to share it for free or sell it. Please see my separate tutorial on how to share and sell your files on the embodi3D.com website for additional details. When you're happy with your choices, save the file, as shown in Figure 15: Figure 15: File processing options. Step 5: Download your new STL file after processing is completed. In about 5 to 15 minutes you should receive an email that says your file has finished processing and is ready to download. Follow the link in the email or access the new file via your profile on the embodi3D.com website. Your newly created STL file should have several rendered thumbnails associated with it on its download page. If you want to download the file click on the Download button, as shown in Figure 16. Figure 16: the download page for your new muscle STL file I opened the file in AutoDesk MeshMixer to have another look at it, and it looks terrific, as shown in Figure 17. This file is ready to 3D print! Figure 17: The final 3D printable muscle model. PART 2: Creating a Skin Model STL File Ready for 3D Printing Creating a skin model is essentially identical to creating the muscle model, except instead of choosing the CT NRRD to Muscle STL on the embodi3D.com service, we choose CT NRRD to Skin STL. Step 1: Load DICOM image set into Slicer Launch Slicer. From the tutorial file pack drag and drop the MANIX folder onto the Slicer window to load this head and neck CT scan data set. This is shown in Figure 18. Figure 18: Loading the head and neck CT scan into Slicer. It may take a minute or two to load. From the DICOM browser, click on the ANGIO CT series as shown in Figure 19. Figure 19: Loading the ANGIO CT series from the MANIX data set Step 2: Skip the trimming and crop volume operations In this case we don't need to trim and crop a volume as we did with the muscle file above. We can skip Step 2. Step 3: Save the CT scan in NRRD format. Just as with the muscle file above, save the volume in NRRD format. Click on the save button, make sure that the checkbox for the nrrd file is selected and all other checkboxes are deselected. Specify the correct directory you want the file to be saved in, and click Save. Step 4: Upload your NRRD file of the head to the embodi3D website. Just as with the muscle file process as shown above, upload the head NRRD file to the embodi3D.com website. Enter in the required fields. In this case, however, under Operation choose the CT NRRD to Skin STL operation, as shown in Figure 20. Figure 20: Selecting the CT NRRD to Skin STL file operation Step 5: Download your new Skin STL file After about 5 to 15 minutes, you should receive an email that says your file processing has been completed. Follow the link in the email or look for your file in the list the files you own in your profile. You should see that your skin STL file has been completed, with several rendered images, as shown in Figure 21. Go ahead and download your file. You can then check the quality of your file in Meshmixer as shown in Figure 22. In this instance everything looks great and the file is error free and ready for 3D printing. Figure 21: The download page for your newly created 3D printable skin STL file. Figure 22: Opening the file in Meshmixer for quality control checks. The file is error free and incredibly lifelike. It is ready for 3D printing. Thank you very much! I hope you enjoyed this tutorial. If you use this service to create 3D printable models, please consider sharing your models with the embodi3D community. Here is a detailed tutorial that I wrote on exactly how to do this. This community is built on medical 3D makers helping each other. Please share the models that you create!
  20. In this tutorial we will learn how to easily create a 3D printable dental, orthodontic, or maxillofacial bone model quickly and easily using the free democratiz3D® file conversion service on the embodi3D.com website. Creating the 3D printable dental model takes about 10 minutes and requires no prior experience or specialized knowledge. Dental 3D printing is one of the many uses for democratiz3D. You can 3D print teeth, braces, dental implants and so much more. Step 1: Download the CT scan file for dental 3D printing. Go to the navigation bar on the embodi3D.com website and click on the Download menu. This is shown in Figure 1. Figure 1: The Download menu This will take you to the download section of the website, which has a very large and extensive library of 3D printable anatomy files and source medical scan files. Look for the category along the right side of the page that says Medical Scan Files. Click on the section within that that says Dental, Orthodontic, Maxillofacial, as shown in Figure 2. Figure 2: Viewing the medical scan library on the embodi3D website This section contains anonymized CT scans of the teeth and face. Many of the scans in this section are perfect for 3D printing dental models. For this tutorial we will use the file openbiteupdated by member gcross, although you can use any source CT scan. This particular scan is a good one to choose because the patient does not have metallic fillings which can create streak artifact which can lower the quality of the model. Click on the link below to go to the file download page. Step 2: Preview the Dental CT scan file. Once you've downloaded the file you can inspect the CT scan using 3D Slicer. If you don't know about 3D Slicer, it is a free open source medical image viewing software package that can be downloaded from slicer.org. Once you have installed and opened Slicer, you can drag-and-drop the downloaded NRRD file onto the slicer window and it will open for you to view. You can see as shown in Figure 3 that the file appears to be quite good, without any dental fillings that cause streak artifact. Figure 3: Viewing the dental CT scan in Slicer. Step 3: Upload your dental CT scan NRRD file to the democratiz3D online service. Now that we are happy with our NRRD source file, we can upload it to the democratiz3D service for conversion into a 3D printable STL file. On the embodi3D website click on the democratiz3D navigation menu and Launch App, as shown in Figure 4. Figure 4: Launching the democratiz3D service. Once the online application opens, you will be asked to drag-and-drop your file onto the webpage. Go ahead and do this. Make sure that the file you are adding is an NRRD file and corresponds to a dental CT scan. An MRI will not work. This is shown in Figure 5. Figure 5: Dragging and dropping the CT scan NRRD file onto the democratiz3D application page. Step 4: Fill in basic information about your uploaded scan and generated model file While the file is uploading you can begin to fill out some of the required form fields. There are two main sections to the form. The section labeled 3 pertains to the file currently being uploaded, the NRRD file. Section 4 pertains to the generated STL file that democratiz3D will create. In Section 3 fill out a filename and a short description of your uploaded NRRD file. Specify whether you want the file to be private or shared, and whether this is a free file or a paid file that you wish to sell. You must choose a license type, although this is only really applicable if your file is shared as if it is private nobody will be able to download it. This portion of the form is shown in Figure 6. Figure 6: Filling out the submission form, part 1. Enter in information related to the uploaded NRRD file. Next proceed to section 4, the portion of the form related to the file you wish to generate. Make sure that democratiz3D processing is turned on and the slider shows green. Choose the appropriate operation. For creation of dental files, the best operation is "CT NRRD to Bone STL Detailed." This takes a CT scan in NRRD file format and converts it to a bone STL file using maximum detail. Leave the threshold at the default value of 150. Set quality to high. Make sure that you specify whether you want the file to be private or shared, and free versus paid. Make sure you specify file license. The steps are shown in Figure 7. Figure 7: Filling out the submission form, part 2. Enter in information related to the generated STL file. Make sure you check the checkbox that states you agree to the terms of use, and click the submit button. Your file will now start processing. In approximately 10 minutes or so you should receive an email stating that the file has been processed and your newly created 3D printable STL model is ready for download. The email should contain a link that will take you to your file download page, which should look something like the page in Figure 8. There should be several thumbnails which show you what the model looks like. To download the file click on the Download button. Figure 8: The file download page for your newly created dental model. Step 5: Check your dental STL file for errors and send it to your dental 3D printer! Once you have downloaded the STL file open it in Meshmixer. Meshmixer is a free 3D software program available from meshmixer.com that has many handy 3D printing related features. The democratized service is a good job of creating error-free files, but occasionally a few errors will sneak through, which can be easily fixed and Meshmixer. Click on the analysis button and then select Inspector as shown in Figure 9. Click on the Auto Repair All button and any minor defects that are remaining will be automatically fixed. Make sure to save your repaired and finalized 3D printable model by clicking on the menu File -> Export. You can now send your STL file to the 3D printer of your choice. Here is an example of the model when printed on a Form 1+ using white resin. You can see that the level of detail is very good. Formlabs has several examples of 3d printing teeth and other dental applications on their website. Thank you very much. I hope this tutorial was helpful. If you are not already a member, please consider joining the embodi3D community of medical 3D printing enthusiasts. If you have any questions or comments, please feel free to post them below.
  21. Version

    898 downloads

    This 3D printable brain is from an MRI scan of a 24 year old human female. Files are available for both gray matter (pial) and white matter (smoothwm) in both hemispheres. Files are available in both STL and Blender formats. This model is shared under the Creative Commons Attribution license and was created by Prevue Medical and posted here.

    $4.99

  22. embodi3d

    3D printable human heart

    Version

    448 downloads

    This anatomically accurate human heart was created by Dr. Marco Vettorello, who has graciously given permission to share it here. The file is in STL format and compressed with ZIP. This file is also available here.

    Free

  23. Version 1.0.0

    20 downloads

    This model is the right thigh muscle rendering of a 65-year-old male with left thigh myxoid fibrosarcoma. At the time of diagnosis, the patient had metastases to his lungs. The patient therefore underwent neoadjuvant radiotherapy, surgery, and adjuvant chemotherapy and was found to have an intermediate grade lesion at the time of diagnosis. The patient is still living with the metastatic disease at 2.5 years since diagnosis. This is an STL file created from DICOM images of his CT scan which may be used for 3D printing. The thigh is divided into three compartments: the anterior, posterior, and adductor. The anterior compartment contains the “quadriceps muscles”, made up of the vastus lateralis, vastus medialis vastus intermedius, and rectus femoris, and the sartorius. These muscles are innervated by the femoral nerve (L3-L4), and act to extend the leg. The Sartorius muscle originates at the ASIS and crosses anterior to the quadriceps muscle to insert on the medial tibia in the pes anserinus. The posterior compartment contains the “hamstrings”, made up of the semitendinosus, semimembranosus, and short and long heads of the biceps femoris. These muscles act to flex the leg. All of these muscles are innervated by the sciatic nerve (tibial division) except for the short head of the biceps femoris, which is innervated by the sciatic nerve (peroneal division). The adductor compartment contains the adductor longus, adductor brevis, adductor magnus, and gracilis, which act to adduct the thigh. These muscles are innervated by the obturator, and the adductor magnus has dual innervation with the sciatic nerve. In addition, the obturator externus (a thigh external rotator) and pectineus muscle (thigh flexor and adductor) are located within this compartment. This model was created from the file STS_022.

    Free

  24. Version 1.0.0

    13 downloads

    This model is the right leg muscle rendering of a 65-year-old male with left thigh myxoid fibrosarcoma. At the time of diagnosis, the patient had metastases to his lungs. The patient therefore underwent neoadjuvant radiotherapy, surgery, and adjuvant chemotherapy and was found to have an intermediate grade lesion at the time of diagnosis. The patient is still living with the metastatic disease at 2.5 years since diagnosis. This is an STL file created from DICOM images of his CT scan which may be used for 3D printing. The lower leg is divided into four muscle compartments: the anterior, lateral, superficial posterior, and deep posterior compartments. The anterior compartment is made from the dorsiflexors, including the tibialis anterior, extensor hallucis longus (EHL), extensor digitorum longus (EDL) and peroneus tertius, which are innervated by the deep peroneal nerve. The lateral compartment includes the peroneus longus and peroneus brevis, which assist in foot eversion and are innervated by the superficial peroneal nerve. The superficial posterior compartment includes the gastrocnemius, soleus, and plantaris, which assist in plantarflexion and are innervated by the tibial nerve. The deep posterior compartment is made up of the popliteus, flexor hallucis longus (FHL), flexor digitorum longus (FDL), and tibialis posterior, which mostly assist in plantarflexion and are innervated similarly by the tibial nerve. The primary motions of the ankle are dorsiflexion, plantarflexion, inversion and eversion. However, with the addition of midfoot motion (adduction, and abduction), the foot may supinate (inversion and adduction) or pronate (eversion and abduction). In order to accomplish these motions, muscles outside of the foot (extrinsic) and muscles within the foot (intrinsic) attach throughout the foot, crossing one or more joints. Laterally, the peroneus brevis and tertius attach on the proximal fifth metatarsal to evert the foot. The peroneus longus courses under the cuboid to attach on the plantar surface of the first metatarsal, acting as the primary plantarflexor of the first ray and, secondarily, the foot. Together, these muscles also assist in stabilizing the ankle for patients with deficient lateral ankle ligaments from chronic sprains. Medially, the posterior tibialis inserts on the plantar aspect of the navicular cuneiforms and metatarsal bases, acting primarily to invert the foot and secondarily to plantarflex the foot. The flexor hallucis longus inserts on the base of the distal phalanx of the great toe to plantarflex the great toe, and the flexor digitorum inserts on the bases of the distal phalanges of the lesser four toes, acting to plantarflex the toes. The gastrocnemius inserts on the calcaneus as the Achilles tendon and plantarflexes the foot. Anteriorly, the tibialis anterior inserts on the dorsal medial cuneiform and plantar aspect of the first metatarsal base as the primary ankle dorsiflexor and secondary inverter. The Extensor hallucis longus and extensor digitorum longus insert on the dorsal aspect of the base of the distal phalanges to dorsiflex the great toe and lesser toes, respectively. This model was created from the file STS_022.

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  25. Version 1.0.0

    12 downloads

    This model is the right knee muscle rendering of a 65-year-old male with left thigh myxoid fibrosarcoma. At the time of diagnosis, the patient had metastases to his lungs. The patient therefore underwent neoadjuvant radiotherapy, surgery, and adjuvant chemotherapy and was found to have an intermediate grade lesion at the time of diagnosis. The patient is still living with the metastatic disease at 2.5 years since diagnosis. This is an STL file created from DICOM images of his CT scan which may be used for 3D printing. The knee is a hinge joint that does not have true bony stabilization, so it requires soft tissue static and dynamic stabilizers to prevent excess motion through the joint. In addition, the knee goes through a “screw home” mechanism in which the tibia rotates externally and “locks” into extension during the last 15-20 degrees of extension. Multiple structures, therefore, are needed to work in concert to prevent excess strain through this joint during these daily motions. On the medial aspect of the knee, the static stabilizers consist of the superficial and deep medial collateral ligaments (MCL) and the posterior oblique ligament (POL). The dynamic stabilizers are the semimembranosus, vastus medialis, medial gastrocnemius, and pes tendons (semitendinosus, gracilis, and sartorius). The lateral stabilizers are best known as the posterolateral corner, and consist of the static stabilizers (lateral collateral ligament (LCL), iliotibial band (ITB), arcuate ligament), and dynamic stabilizers (popliteus, biceps femoris, lateral gastrocnemius). Inside the joint, the anterior cruciate ligament provides resistance to anterior tibial translation varus, and internal rotation, whereas the posterior cruciate ligament provides resistance to posterior tibial translation, varus, valgus, and external rotation. This model was created from the file STS_022.

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