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Salter-Thompson classification of Perthes disease

The Salter-Thompson classification of Perthes disease simplifies the Catterall classification into two groups. Based on the radiographic crescent sign, we can distinguish: group A: including Catteral groups I and II, where the crescent sign involves less than 50% of the femoral head group B: i...

Catterall classification of Perthes disease

The Catterall classification of Perthes disease is based on radiographic appearances of the epiphysis and metaphysis visible in osteonecrosis of the femoral head: stage I bone absorption changes visible in the anterior aspect of the epiphysis of femoral head changes are visible best in frog l...

Enneking surgical staging system

The Enneking surgical staging system (also known as the MSTS system) is based on tumor grade, local spread and metastatic disease of malignant musculoskeletal tumors. It does not classify skull tumors or marrow-originating tumors (e.g. lymphoma, plasmacytoma / multiple myeloma, Ewing sarcoma) 1...

Osteochondritis dissecans (surgical staging)

Osteochondritis dissecans can be classified at surgery into 4 stages: stage I stable lesion in continuity with the host bone covered by intact cartilage stage II stable on probing partial discontinuity of the lesion from the host bone stage III unstable on probing fragment not dislocat...

Waldenström classification of Perthes disease

The Waldenström classification of Perthes disease refers to x-ray abnormalities and represents four temporal phases of the disease. These stages have been further subdivided in the modified Elizabethtown classification 2. stage I: early asymmetric femoral epiphyseal size (smaller on the affect...

Rhabdomyosarcoma (staging)

Staging of rhabdomyosarcoma is based on the Lawrence/Gehan Staging System which comprises of a combination of pretreatment staging and postoperative clinical grouping. Stage stage I: orbit, eyelid, head and neck (excluding parameningeal), genitourinary (non-bladder, non-prostate), N0 or 1, M0 ...

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