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Found 4 results

  1. Version 1.0.0

    8 downloads

    This is the normal left thigh muscle model of a 56 year old male with contralateral anterior thigh pleomorphic leiomyosarcoma. 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_014.

    Free

  2. Version 1.0.0

    12 downloads

    This is the normal right leg muscle model (including foot) of an 82-year-old male. 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 include 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. This file was created from the file STS_013.

    Free

  3. Version 1.0.0

    1 download

    These images are the bilateral leg muscle renderings of an 82 year old male with a dedifferentiated liposarcoma in the anterior compartment of the left thigh. This is an STL file created from DICOM images of his CT scan which may be used for 3D printing. Liposarcomas are the second most common soft tissue sarcoma in adults, occurring more commonly in males between the ages of 50 and 80 years old. They present as a slow growing, painless mass typically located in the extremities, with the thigh being the most common location. Multiple variants of liposarcomas exist, but the dedifferentiated type is a high-grade sarcoma. Dedifferentiated liposarcomas are typically located adjacent to a well-differentiated lipomatous lesion. The incidence of pulmonary metastasis increases with grade. Therefore, work up of the lesion consists of MRI, biopsy through the area of future resection, CT of the chest, abdomen, and pelvis to rule out metastases. Treatment consists of radiation and wide surgical resection but chemotherapy agents are being developed to target chromosomal abnormalities associated with certain well-differentiated and dedifferentiated liposarcomas. This patient received radiation and resection of the tumor and has not had a metastasis or recurrence in 4.5 years. This figure came from the file STS_013.

    Free

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