– See: – Bone Tumor Menu and Osteosarcoma Demonstration Project – Discussion: – malignant tumor of bone in which neoplastic osteoid is produced by a proliferating spindle cell stroma; – most common primary malignant bone tumor of mesenchymal derivation; – arises in adolescents, and second or third decade; – … Read more
– Discussion: – frx of pubic rami & ipsilateral or contralateral to post injury; – APC: APC-I / APC II / APC III – open book pelvic injuries; – Bucholz Classification – Letournel Classification – Young Burgess System – Lateral Compression: LC-I / LC-II / LC-III – … Read more
– Discussion: – chronic sclerosing osteomyelitis (of Garre) has dense sclerotic appearance and often no associated lucency on radiographs; – lesion usually involves the entire circumference of the bone and is much more widespread than a stress fracture; – thinner linear sclerotic appearance of a stress fracture should be … Read more
– See: Bone Tumor Menu – Discussion: – malignant cartilaginous tumor of bone (3rd most common malignant bone tumor / comprises 20% of malignant bone lesions); – it is less common and less aggressive than osteosarcoma; – staging: – histologic grading is best predictor of stage; – most often presents as … Read more
Discussion rare, slow growing tumor arising from remnants of the notochord in axial skeleton of middle aged adults; most occur in midline at base of skull and in the sacrococcygeal area (it is the most common primary bone tumor of the sacrum); classically a slow growing lytic, anterior scaral (50%), or cervical lesion in 35%; … Read more
– See: Patella and Patellofemoral Function – Discussion: – chondromalacia describes softening & fissuring of articular hyaline cartilage; – chondromalacia may result from an excessive load on patellofemoral joint, but disuse may be a contributing factor; – most common in yound women; – relationship between chondrosis & … Read more
– Discussion: – comprises a group of disorders characterized by multiple punctate calcifications in infancy; – skeletal manifestations include: skin, facial, ocular, and cardiac abnormalities; – characteristic punctate calcifications are seen on x-ray at birth and usually disappear by one year of age; – Orthopaedic Manifestations: – … Read more
– Discussion: – type I, type II, and type III are most common; – type IV: – is also referred to as Refsum disease; – associated w/ excess phytanic acid; – type V: – inherited spastic paraplegia with distal weakness in the limbs; – usually presents in the second decade of life or later; – … Read more
– See: diabetic foot menu – Diabetic Charcot Foot and Ankle: – originally described in the 1860s by the neurologist Jean-Martin Charcot; – may occur w or w/o neuropathic ulceration (mal perforant): – typically appears in 5th and 6th decades; – often occurs in the face of a relatively “normal vascular exam;” – neuropathic ulcerations are … Read more
– See: – Cross Table Lateral – Spondylosis – Discussion: – risk of spinal cord injury with damage to cervical vertebrae is greater in individuals who have narrow spinal-canal diameters; – narrow mid-sagittal spinal-canal diameter increases risk of severe neurological injury from spinal frx or … Read more