– Types of Injuries: – short leg syndrome: (see growth deformities of the limbs) – unequal leg lengths may predispose to injury in shorter leg; – trochanteric bursitis: – gluteus medius attaches by a broad insertion into its lateral … Read more
– Discussion: – usually presents as irreducible dislocation of PIP joint (as opposed to dorsal dislocations which are usually reducible); – rotatory dislocation involves buttonholing of one condyle of head of proximal phalanx through longitudinal rent in extensor hood between central slip and lateral band; – see: … Read more
– Discussion: – ultimate effects of rotation of TKR components: – internal rotation of tibial component w/ respect to tibia will cause external rotation of tibia when knee is reduced, resulting in lateral displacement of the tibial tubercle; – medial rotatation of the tibial & femoral … Read more
– Discussion: – TKR: effects of malrotation – patellar effects: – malrotation of femoral component may lead to patellofemoral dislocation or subluxation; – slight external rotation of femoral component on femur places patellofemoral groove more laterally, enhances patellofemoral stability (external rotation moves … Read more
– See: – Knee Joint Anatomy and Function: – Gait Menu: – Diagram: – Mid-Stance: – knee joint is in approx 15 deg of flexion & is moving toward extension; – primary flexors of ankle are beginning to demonstrate low grade activity; … Read more
– See: – Ankle Joint: Anatomy – Equinus Contracture – Gait (discussion of) – Sub-Talar Joint – Diagram: – Ankle Joint: During Gait: – ankle joint has an oblique axis; – in frontal plane, ankle joint is angled 82 … Read more
– See: Role of Knee Joint in Gait: – Discussion: – for reason of contour of femoral & tibial condyles, flexion & extension of knee joint are not simple hinge movements that occur at the elbow joint. – flexion & extension do not occur about a fixed transverse axis of rotation but rather about a constantly changing … Read more
– Discussion: – see allograft menu and ocd menu; – indicated for larger chondral or osteochondral defects (larger than 2 cm); – donor characteristics: – donors should be less than 30 years of age, with the graft harvesting the intact knee within 24 hrs … Read more
– See: Arthroscopy of the Arthritic Knee – Discussion: – thickness of articular cartilage cannot be assessed by visualization alone, but denuded and eburnated areas of bone can be seen; – these areas are usually spotty, and assessing their importance is difficult High tibial osteotomy in the treatment of osteoarthritis of … Read more
– Discussion: – Tibial Plateau Frx Menu – condition of fibula, whether frxed or intact, determines angulatory behavior of these frx under wt bearing and functional conditions; – isolated frx of lateral plateau w/ intact fibula do not tend to collapse further because of the support of the fibula; – … Read more