Discussion in those cases in which inadequate bone remains, salvage of ankle joint may be brought about by realignment of tibiotalar joint & fusion of subtalar joint or by tibiocalcaneal fusion w/ tricortical bone graft. this fusion has been used to salvage cases of avascular collapse w/ degenerative changes in the ankle and subtalar joint; … Read more
– See: Biomechanics Menu: – Anatomy of the ACL: – Biomechanics: – ultimate tensile load: 2160 ± 157 N – stiffness: 242 ± 28 N/mm; – passive knee extension produces forces along ACL only during last 10 degrees of knee extension; – hyper-extension: … Read more
– See: Role of Knee Joint During Gait: – Discussion: – patella increases the mechanical advantage of extensor muscles by transmitting forces across knee at greater distance (moment) from axis of rotation; – increases functional lever arm of quads as well as changing direction of pull of quad mechanism; … Read more
– Indirect Reduction Stratedgy: – statedgy forgoes attempts at meniscal reduction (or repair), ligamentous repair, or direct joint reduction; – longitudinal traction is used to align proximal tibial condyles over shaft; – depressed fragments are reduced w/ a bone tamp thru cortical window; – frx reduction is … Read more
– Anatomy: – origin: – long head: ischial tuberosity and the sacrotuberous ligament; – short head: lateral lip of linea aspera, lateral supracondyle of femur and lateral intermuscular septum; – insertion: – lateral sides of the head of the … Read more
– Discussion: Tibial Plateau Frx Menu – consists of wedge frx of medial & lateral plateau; – if articular depression is present, it is usually present on the lateral plateau; – frx may have an inverted Y appearance, w/ the articular frx originating in the intercondylar region; – associated … Read more
– Ref Prognostic Features – Ref for Pulmonary Resection in Osteosarcoma – Ref for Surgery & Surgical Limb Salvage – Ref for Radiation Rx for Osteosarcoma – MRI Ref – Chemotherapy Ref Medical Progress: Osteosarcoma: fifteen Years Later. Surgical treatment for osteosarcoma Osteosarcoma of the spine Limb-salvage treatment versus amputation for osteosarcoma of the distal end … Read more
– See: – BKA Prosthesis – Amputations in the Diabetic Patient – Pediatric BKA: – Discussion: – length considerations: – ideal bone length is between 12 to 17 cm as measured from the medial joint line; – in … Read more
– See: Radiographs for Supracondylar Frx: – Baumann’s Angle: – humeral capitellar angle: angle between long axis of humeral shaft & growth plate of lateral condyle, will reliably predict final carrying angle after reduction; – normal is about 85-89 deg, but it is best to judge … Read more
– Discussion: – is X-linked recessive dystrophy that shares many of the features of DMD, including pseudohypertrophy of muscles; – main clinical difference is that the course is more protracted; – patients are usually able to walk as late as early adulthood and often live into their 30s and … Read more