– Discussion: – in the presence of H.O. the nerve should be placed in the subcutaneous position, since H.O. forms between muscle layers; – sub-muscular transposition (or subQ transposition) is also indicated to relieve tension following ulnar nerve repairs; – is often indicated in revision cubital tunnel surgery; … Read more
– Discussion: – demonstrates intra-articular extension of frx – degree of comminution of posterior facet; – calcaneocuboid joint; – impingement of lateral border of calcaneus on lateral malleolus and entrapment of tendons or nerves can be demonstrated; – latter is best seen … Read more
– Discussion: – decreased neck shaft angle from defect in ossification of femoral neck; – it is bilateral in 1/3 to 1/2 of cases; – it can be congenital (noted at birth & differenitated from CDH by MRI), developmental (AD-progressive), or acquired (trauma, LCP, SCFE) – Differential Dx: … Read more
– Discussion: – for fixation of small bones such as forearm, fibula, & clavicle; – core diameter of 2.4 mm and requires a 2.5 mm drill bit; – 3.5 mm titanium shaft screw used as lag screw in a LC-DCP 3.5 mm – designed … Read more
– Discussion: – most common type of navicular frx; – caused by a twisting force (usually eversion) applied to the foot; – acute eversion of foot, resulting in increased tension on posterior tibial tendon or anterior fibers of deltoid ligament, places avulsion pull on navicular tuberosity, producing this fracture; … Read more
– Discussion: – the Coventry type of HTO, creates an osteotomy above the tibial tubercle; – in choosing a closing wedge osteotomy, the surgeon should be sure that the major deformity is on the tibial side (vs femoral side); – the disadvantages of this type of osteotomy include possible … Read more
– Discussion: – coronoid helps to resist varus stress and posterior elbow subluxation (radial head also resists posterior subluxation); – pivotal role as an anterior buttress; – at least 50% of the coronoid must be present for the ulno-humeral joint to have normal function (i.e., for joint to be stable); … Read more
– See: – Pressure Irrigation – Topical Agents and Antiseptics – Management: – antibiotic bead pouch: – after stabilization has been completed, osseous defects may be filled w/ antibiotic-impregnated methylmethacrylate beads; – these are made by the mixing … Read more
– Discussion: – irreducible dorsal dislocation of the navicular on the talus w/ fixed talo-navicular complex; – CVT is a common cause of rigid flat foot, which can be isolated, or can occur with chromosomal abnormalities, myeloarthropathies (myelomeningocele), & neurologic disorders; – pathoanatomy: … Read more
– See: – Anterolateral Bowing – Neurofibromatosis – Discussion: – is rare, occurring equally in girls and boys; – disease is almost always unilateral; – acute frxs occur during first 2 yrs of life, usually shortly after birth. – … Read more