Data Trace Editor – Discussion: (See: Blood Supply to Femoral Head) – there are certain areas of bone in which vascular supply is precarious; – these areas are subject to infarction and avascular necrosis; – three such regions are head of femur, body of talus, & scaphoid; – they have the … Read more
– See: – Internal Rotation of Knee Joint: – Rotation of Tibial Component: – Correct Rotation: – as a general rule, the tibial componenet should be aligned such that it points to the medial third of the tibial tubercle; – correct rotational positioning of tibial component is best achieved by by aligning intercondylar eminennce of … Read more
– See: – Surgical Approach: – Transverse Fractures – Discussion: – transverse frx line divides small proximal fragment of olecranon process from rest of ulna; – this frx is most common in elderly patients; – Resection of Olecranon: – Surgical Approach: – resection … Read more
– Discussion: – the most common frx of the base of the 5th metatarsal (over 90%); – may be due to pull of the lateral cord of the plantar aponeurosis – most often this frx is extra-articular, w/ the frx lying proximal to the metatarsocuboid joint; – commonly seen in dancers; – frx may be … Read more
– See: Intercondylar Eminence Frx – Discussion: – avulsion frx of tibial tuberosity along w/ a Salter Harris type-III frx of proximal tibial physis; – need to distinguish tibial tubercle avulsion from Osgood-Schlatter disease (which has no physeal involvement); – where as Osgood Schlatter disease involves … Read more
– Discussion: – profiles the the patellofemoral joint; – points of consideration: – patellar tilt: – patellar subluxation: – sulcus angle: – for assessment of femoral dysplasia; … Read more
– See: – Avascular Necrosis of Femoral Head – IM Nailing of Pediatric Femur Fractures – Discussion: – AVN may not appear for one year or more after IM Nailing of the femoral shaft; – more common in young adolescents undergoing IM nailing of femoral shaft frx, … Read more
– See: – Scaphoid Reconstruction for Nonunion – Vascular Anatomy of Scaphoid: – Discussion: – may be associated w/ longstanding nonunion of proximal pole fractures, especially when associated w/ previous surgery; – AVN of scaphoid is often difficult to diagnose radiographically and therefore it … Read more
– See: – Avascular Necrosis of Femoral Head: – Blood Supply to Femoral Head & Neck: – Non-Union following Femoral Neck Frx; – Discussion: – when femoral neck frx occurs, intraosseous cervical vessels are disrupted; – incidence of AVN in undisplaced fractures is 11%; … Read more
– Discussion: – local or Split compression frx have centrally depressed fragments; – AVN is diagnosed when serial X-ray show a gradual shrinking of the eleveated fragments until a defect remains; – surgically elevated articular fragments always are avascular; – fortunately most elevated frags regain vascularity before they … Read more