Data Trace Editor – 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
– Discussion: – press fit femoral stem main discussion – coating press fit femoral stem; – to maintain bone stock, proximal stress transfer must be a prominent feature of any cementless implant system; – proximal part of femur is often exposed to high longitudinal strain, & bone … Read more
– See: DDH – Discussion: – ultrasound allows description of the morphology of the acetabulum and the stability of the joint (dynamic examination); – ultrasound becomes less useful after 6 months of age because of progressive ossification of the femoral head; – joint stability: … 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: – distal radioulnar subluxation/dislocation (see TFC Injury) – tear of the lunotriquetral – ulnocarpal impingement syndromes – pisotriquetral osteoarthritis – pisotriquetral loose bodies – subluxation/dislocation of the pisiform – fractures (ulnar styloid Process) – chondromalacia – calcific tendinitis – medial carpal instability – radioulnar arthritis – subluxation of the ECU The ulnar impaction … Read more
– See: biomechanics menu: – Discussion: – maximum load that metal can withstand in a single application without breaking; – w/ application of a load, maximum stress will be achieved; – this is ultimate tensile strength, & is maximum stress material can sustain before fracturing; … Read more
Discussion allows assessment of DVT from the external iliac vein down to the popliteal veins visualization distal to the popliteal veins is usually not possible may be able to detect patency of major vessels, but it is not effective for smaller vessels will not diagnose pelvic thrombi note that clots seen on ultrasound comprise a … Read more
– Discussion: – impingement of distal ulna on carpi which may arise from positive ulnar variance or non union of distal ulnar frx; – positive ulnar varience leads to loading of the ulnocarpal joint and resultant LT disruption, lunate chondral lesion, and TFCC tears; – diff dx: (ulnar sided … Read more
– Discussion: – osseous related pain: – hamate fracture – pisiform fracture – ulnar styloid frx – base of the fifth metacarpal – TFCC – radioulnar joint – … Read more