– 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: Proximal 2/3 of the anterolateral surface of the femur, lower 1/2 of the linea aspera, upper part of the lateral supracondylar line; Lateral intermuscular septum; Insertion: By tendons of the rectus and vastus muscles into the superior border of the patella and by the ligamentum patella into the … Read more
– Discussion: – vascular compromise occurs in about 5-20% of children w/ supracondylar frx; – less than 1% will be complicated by compartment syndrome and the resulting sequelae of Volkmann’s contracture; – note that a median nerve palsy, may mask a pending compartment syndrome (because there … Read more
– See: – Amputation of the Finger and Hand: – Above-Elbow Amputation – Below-Elbow Amputation – Upper Extremity Prosthetics: – Wrist Disarticulations – General Considerations: – Disability: – loss of one upper extremity … Read more
– Terminal Devices: – Functional Hooks vs. Cosmetic Hands; – Hooks: Voluntary opening vs closing: – voluntary opening: – more popular & are recognized by their numbers of rubber bands (# is proportional to pinch strength, w/ 3 bands equal to about … Read more
– Definition: – displacement of less than 2 mm; – no increase in minimal degree of separation of 90 deg flexion of elbow; – usually frx gaps dorsally, and some separation of fragments occurs, which leads to joint incongruity; – dorsal gapping w/ displacement of … Read more
– See: RU joint – Discussion: – refers to impingement of the ulnar head against the carpi which can lead to TFCC tears and lunotriquetral ligament attrition; – lunotriquetral ligament attrition may occur from compression and translation shear as the lunate becomes impinged against the ulnar head; – causes: … Read more
– Discussion: – mean ulnar variance is 0.9 mm (range: 4.2 to 2.3 mm); – functional anatomy: – w/ neutral variance, 80% of load is born by radius and 20% by ulna; – 2.5 mm increase in ulnar varience will increase … Read more
– See: – Ulnar Nerve: – Cubital Tunnel Syndrome: – Discussion: – ulnar nerve neuritis is a reported of operative treatment for elbow frxs; – one of complications of ORIF of elbow frxs is adherence of the ulnar nerve directly to medial epicondylar region w/ … Read more
– night stick fracture: mechanism: direct trauma w/ forearm used to block blow – stable frx: – diplaced < 50% = Stable; – periosteum & interosseous membrane are intact & act as restraint to rotation; – unstable fracture: … Read more