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Right Knee Skin Model 3D Printable STL File Converted from CT Scan 1.0.0

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About This File

This model is the right knee skin 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.

 

Landmarks of the lower extremity consist of bony and muscular landmarks. Prior to incision, the bone landmarks should be palpated and drawn. The patella is the largest sesamoid bone (bone located within a tendon) and is located on the anterior aspect of the knee.  Along with the femur, it forms the patellofemoral joint, providing a mechanical advantage to leg extension. The quadriceps tendon inserts proximally and the patellar tendon inserts distally.  The patellar tendon attaches to the tibial tubercle on the anterior aspect of the tibia. On the anteromedial surface of the tibia is Gerdy's tubercle, where the sartorius, gracilis, and semitendinosus attach. Laterally, the head of the fibula may be palpated, which is the attachment for the posterolateral corner structures of the knee joint. The peroneal nerve wraps around the fibular neck, and a tinel’s sign may be elicited due to its superficial position at this location.

 

The knee joint can be palpated and must be accurately located in order to provide landmarks for surgeries such as arthroscopy and arthroplasty. Typically, pain with palpation of the joint line is indicative of knee pathologies such as osteoarthritis or a meniscal tear, with point tenderness at the area of the tear. Proper landmarks are essential for the success of procedures about the knee, and therefore the skin should be adequately evaluated prior to any procedure.

 

This model was created from the file STS_022.




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