(See also: Rotator cuff) origin: infraspinatus fossa of scapula insertion: posterior aspect of greater tuberosity of humerus, capsule of shoulder joint; demensions: infraspinatus has been shown to average 29 mm wide, with a mean medial-to-lateral width of 19 mm action: extension, horizontal extension and lateral rotation of humerus at the shoulder joint. the infraspinatus is the … Read more
– Technique Considerations: – following restoration of fracture anatomy, contour 1/3 tubular, 3.5 pelvic reconstruction, or 3.5 DCPs, to fit medial and lateral aspect of distal humerus; – the strongest bone lies along medial and lateral columns and therefore the plate screws should be placed here rather than central portion of distal end of the … Read more
(see also: Achilles Tendon Rupture) Discussion while there are many causes of posterior ankle pain, there are two distinct conditions which may affect the Achilles tendon: tendinitis and tendinosis, each having a distinct prognosis; Tendinitis / Tendinosis peritendinous inflammation which does not generally progress to degenerative tendinosis (nor rupture); in other situations, there will … Read more
Discussion note whether the acetabular component is same size or 1-2 mm > reamers; it is essential to obtain a tight metal to bone fit at the time of surgery, inorder to avoid subsequent loosening; the surgeon should not expect that residual metal – bone gaps will fill in w/ bone; it has also been … Read more
(see also: Bone Grafting for Acetabular Defects) Discussion it is probably the result of remodeling of weak, medial acetabular bone after multiple, recurring stress fractures. intrapelvic protrussion of the acetabulum may be primary or secondary; protrusio acetabuli is not found only in inflammatory arthritides; most cases are in patients with osteoarthritis. primary protrusio: Otto Pelvis … Read more
Discussion arises from median nerve, 5 cm above medial epicondyle; runs on volar surface of FDP and along interosseous membrane between ulna & radius; supplies FPL, lateral half of FDP, & pronator quadratus; may supply sensory branches to distal ru and carpal joints; variations: martin gruber anastomosis occurs in 10-15% of all forearms and in … Read more
(see also: acetabular component) Discussion it is essential to have optimal acetabular exposure; once acetabular exposure is achieved, then note native acetabular anteversion; Exposure for hips w/ severe osteoarthritis (or w/ heavily scarred hips) it may be necessary to fully release the quadratus femoris, and a portion of the gluteal sling; because the majority of … Read more
(see also: Acetabular Component Menu) Acetabular Component press fit components » note whether acetabular component is hemispheric or non-hemispheric; non hemispheric components (ie over sized components or components with a peripheral flare) may be more appropriate for protrusio or for situations where acetabulum will be medialized where as hemisperic components may be more appropriate for … Read more
Total Hip Replacement Menu » Acetabular Component Revision » Discussion indications: salvage device for use in cases of pelvic discontinuity where a stable socket cannot be wedged between the anterior and posterior columns; classification of bone defects and bone grafting options: in almost every case, bone graft is morcelized and placed behind the cup; in … Read more
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