Avascular Necrosis (AVN) Hip — Ficat & ARCO
AVN = ischemic necrosis of femoral head → collapse and arthritis. Risk factors: steroids, alcohol, trauma, sickle cell, Gaucher’s, idiopathic. Ficat staging I–IV; ARCO in...
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Comprehensive guide to orthopaedic screws covering screw anatomy and geometry, cortical and cancellous screws, lag screws and the lag technique, locking screws, cannulated screws, headless compression screws, malleolar and positional screws...
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AVN = ischemic necrosis of femoral head → collapse and arthritis. Risk factors: steroids, alcohol, trauma, sickle cell, Gaucher’s, idiopathic. Ficat staging I–IV; ARCO in...
Indications: medial compartment OA with varus deformity in young active patients. Goal: shift weight-bearing axis laterally to unload medial compartment. Techniques: late...
Cartilage repair technique for focal chondral defects
Salvage procedure for irretrievable failed TKA, chronic infection, tumor resection. Techniques: intramedullary nailing, external fixation (Ilizarov), compression plating....
Indications: end-stage hip OA, AVN, RA, ankylosing spondylitis, fracture neck femur (elderly). Contraindications: active infection, severe medical comorbidity, poor bone...
Traction apophysitis at inferior pole of patella in adolescents. Similar mechanism to Osgood–Schlatter but at patellar origin of tendon. Clinical: localized pain at infer...
Most common acute dislocation of knee; lateral displacement of patella. Mechanism: valgus stress + external rotation with knee flexion. Clinical: sudden giving way, patel...
Common cause of anterior knee pain in young adults, esp. females (‘runner’s knee’). Etiology: maltracking due to Q-angle increase, muscle imbalance, overuse. Clinical: di...
Indications: end-stage OA, RA, post-traumatic arthritis with pain and disability. Contraindications: active infection, severe vascular disease, extensor mechanism dysfunc...
Indications: isolated unicompartmental OA with intact ligaments and correctable deformity. Contraindications: inflammatory arthritis, fixed deformity, ACL deficiency. Adv...
Patellar instability often due to MPFL rupture after lateral patellar dislocation. Risk factors: trochlear dysplasia, patella alta, increased TT-TG distance. Clinical: re...
Overuse injury of patellar tendon, common in jumping athletes (basketball, volleyball). Pain localized to inferior pole of patella; worse with jumping, squatting, stairs....