Data Trace Editor Discussion restoration of normal hip center in acetabular reconstruction encourages restoration of normal biomechanics; placing the socket laterally creates increased joint reactive force, and placing it directly superior requires the use of a long neck prosthesis to restore abductor moment arm; long neck prosthesis will develop increased lateral bending stresses, adapting to the activities of … Read more
(see also: acetabular component Loosening of Press Fit Acetabular Components (press fit acetabular components) normal bone ingrowth generally for bone ingrowth to occur, the component must lie with 50 micrometers of the acetabulum, inorder for host bone ingrowth to occur; as noted by Bloebaum RD, et al (1997), bone ingrowth into component averages only 12%, … 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
most common accessory bones os trigonum os tibiale externum (accessory navicular) os peroneum (lateral aspect of cuboid) os vesalianum (base of 5th metatarsal) less common accessory bones os supratalare (antero-supero aspect of talus) os supranaviculare (superior aspect of navicular – seen on lateral) processus uncinatus (at intersection of navicula, 2nd and 3rd cuniform) os intercuneiforme … Read more
(see also: Technique of Reduction) Discussion initial considerations angular / rotational deformity: (growth will not correct rotational deformity) age distance from physis direction of angulation amount of deformity bayonette apposition generally bayonette opposition will require operative reduction (either closed with a Kapandji K wire levering technique or in some situations, an open reduction and fixation … 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