– See quadriceps muscle; Origin: Lower 1/2 of the intertrochanteric lines, medial lip of linea aspera, upper part of medial supracondylar line, medial intermuscular septum tendons of adductor magnus and adductor longus; Insertion: Medial border of the patella by the ligamentum patella into the tibia tuberosity; Action: Extends the leg at the knee … Read more
– See Quads Origin: upper part of intertrochanteric line, anterior and lower borders of greater trochanter, lateral lip of gluteal tuberosity, upper half of linea aspera, lateral intermuscular septum, and tendon of the gluteus maximus; Insertion: lateral border of the patella by the ligamentum patella into tibia tubercle; Action: extends the … Read more
– Discussion: – limited peripheral blood supply originates predominantly from the lateral and medial geniculate arteries (both inferior and superior) – these supply the meniscus through a vascular synovial covering of anterior and posterior horn attachments; – branches from these vessels arborize to … Read more
– Discussion: – unicompartmental arthroplasty serves a specific nitch for knees that are too severe for arthroscopic management of medial DJD (see mosaicplasty) but are not severe enough for total knee replacement; – best indications: – UKR for patients with partial thickness cartilage loss in the affected compartment. – The implications of damage to the lateral … Read more
– Constant Friction Knee: – simply a hinge that is designed to dampen knee swing via a screw or rubber pad that applies friction to the knee bolt; – it is a general utility knee, and may be used on uneven terrain; – it is the most common knee … Read more
– Bucket Handle Meniscus Tear – Horizontal Tear – Longitudinal Tear – Posterior Horn Tears of Medial Meniscus – Radial Meniscus Tear – Flap Tear: – one of most commmon meniscal tears and is believed to propagate from either the radial or Bucket Handle Tears; – separating the base of this … Read more
– Discussion: – tunnel radiograph of knee provides an angled PA projection of knee; – patient is prone with the knee flexed at 40 deg; – central beam directed caudally toward the knee joint at a 40 deg angle from the vertical; … Read more
– Nonossifying fibroma – Osteosarcoma – Giant Cell Tumor of Bone – Ewing’s sarcoma: – Osteochondroma – Chondroblastoma – Chondromyxoid fibroma – Eosinophilic granuloma … Read more
– Osteochondroma – Osteosarcoma – Giant Cell Tumor of Bone – Ewing’s sarcoma: (diaphyseal region); – Chondroblastoma – Chondromyxoid fibroma – Fibrous Dysplasia – Eosinophilic granuloma – Aneurysmal bone cyst – Simple bone cyst – Giant cell sarcoma – Fibrous Histiocytoma – Fibrosarcoma of bone; – Adamantinoma – Osteoma: middle 1/3 (rare) – Pearls: – … Read more
– PreOp Planning: – knee deformities should be corrected prior to any forefoot fusions; – stability of talus in mortise is necessary for successful arthrodesis; – determine if flexibility of forefoot and hindfoot; – if foot can be reduced to a satisfactory position then an in situ type of arthrodesis may be considered; – if … Read more