THR menu acetabular component posterior column fracture Discussion (see also: classfication and bone graft options) condition in which superior aspect of pelvis is separated from inferior aspect because of bone loss or a fracture through acetabulum; most discontinuities represent unhealed transverse acetabular fractures which occurr through areas of pelvic bone loss; in the study by … Read more
THR menu acetabular component revision acetabular component Socket (Hip Center) Location if opposite hip is normal, it may be used as a template; normal hip center should be restored when possible (this will reduce joint reactive forces); generally the the component is placed as far medially and as far inferiorly as possible; management of superior … Read more
THR menu / Revision THR acetabular component Discussion note that some of the problems seen in dysplasia are frequently encountered in revision THR; indications for acetabular revision: sepsis, component malposition, impingement, polyethylene wear, pelvic osteolysis, recurrent dislocation, progressive protrusio, and component loosening; evaluation of the painful THR examination: examination for loosening previoius incisions; contracture of … Read more
Discussion accessory navicular is an accessory ossicle of the foot which is located on the medial side of foot, proximal to the navicular and in continuity with the tibialis posterior tendon; approximately 2-12% of people may have this ossicle; accessory navicular generally does not ossify until 9 years of age, and in about one half … Read more
Discussion tears of AC & CC ligaments (from fall on tip of shoulder) allows upper limb to drop away from clavicle, producing separation of AC joint; differential diagnosis distal clavicular physeal separation childhood equivalent of AC separation; atraumatic AC joint laxity (from ligamentous laxity) Classification Rockwood Classification type I sprain of joint with out a … Read more
Discussion general discussion: clinical and radiographic findings Surgical Technique Subacromial Decrompression Arthroscopic Distal Clavicle Excision: Open Clavicle Excision: Surgical Technique: Modified Weaver Dunn Procedure: Complications lateral elevation of the clavicle: lateral elevation is often associated w/ pain; ref: Sequential Resection of the Distal Clavicle and Its Effects on Horizontal Acromioclavicular Joint Translation references: Complications after … Read more
Discussion total absence of the thumb may be an isolated anomaly, but it is often associated with some other congenital malformation; absent thumb may be inherited as autosomal dominant or may be sporadic; absent thumb is frequently observed in Holt-Oram syndrome, Fanconi’s anemia, and ring D chromosome abnormalities; absent radius is almost always associated with … Read more
(see also: AKA Prosthesis, Amputations in the Diabetic Patient Discussion average AK amputee walks 43% slower and expends 89% more kcal/min than the normal person; if proximal circulation is adequate, a longer anterior muscle flap may be left and the combination myodesis- myoplasty technique is used; ability to ambulate with a prosthesis depends heavily … Read more
Discussion it is important that knee joint is extended throughout stance phase; this means that the components are assembled so that a straight line extended fromthe "trochanter" will pass anterior to the knee and through the ankle; friction is adjusted to help control the amount of knee flexion and to help decelerate the shank; mechanical … Read more
Discussion (see also: rotator cuff) abduction of shoulder is a smooth, integrated motion which has been termed scapulohumeral rhythm by Codman; disruption of this smooth motion is important since asymmetrical movement usually indicates a chronic pathological disorder of the shoulder; there is a 2:1 ratio of movement in GHJ & scapulothoracic joints; clavicle also plays … Read more