The Hip book

Muscles Tendons

Zone III

– Discussion:     – extends from base of palm or distal end of transverse retinacular ligament to transverse crease in the palm;           – extends just proximal to the IP joint and to the MP joint;     – in this region tendons are essentially free of a tendon sheath … Read more

Young Modulus

– Discussion:     – slope of “stress/strain” curve (below yield point) denotes material’s stiffness;     – steeper the curve, the stiffer material, gradient is known as modulus of elasticity or Young’s modulus;           – in the elastic range of the stress strain curve it is the slope

Young Burgess System

– Discussion:     – w/ Young-Burgess system, stability or lack of stability can be judged fracture pattern, direction of the force of injury, and by knowledge of pelvic ligamentous anatomy;     – in Lateral Compression frx, force of injury is from side & is assoc w/ horizontally oriented pubic frx;     – Lateral Compression Classification: … Read more

X-ray Findings in SLD

          – See:       – PA View       – AP View        – Radiology of Hand & Wrist        – Radiology of Scaphoid Fracture – Discussion:    – clenched fist AP – ulnar deviation view (see: AP view:)         – proper technique: for visualizing … Read more

Wrist Arthrodesis

– Indications:     – painful or unstable wrist joint w/ advanced destruction due to OA, RA, post traumatic arthritis, SLAC wrist, spastic flexion               contracture, degenerative scaphoid non-union, unsuccessful wrist arthroplasty, and Keinbock’s dz;     – this procedure is more beneficial for young, active pts or middle aged pts, but not for elderly pts; … Read more

Wrist Arthrography

– Discussion:     – arthrography may be used in diagnosis of carpal instability because it is technically easy & is only minimally invasive;     – normally there should be no communication between the radiocarpal, mid-carpal, and distal radial-ulnar joints;     – it is noteworthy that in normal wrists there may be communications … Read more

Wrist Arthroscopy

– Positioning and Preparation: – joint is distended w/ finger traps (to index and long fingers) w/ about 10 lbs, using a pulley system; – counter traction is applied to the arm w/ use of a second 10 lb pulley – this allows the elbow to be flexed 90 deg; – gravity assistant inflow; – initially … Read more

Wrist Disarticulation

– Discussion:     – wrist disarticulation: include the removal of the radius and ulna to styloid processes;     – shape of stump remains bulbous, thus permitting prosthetic attachment, leaving the elbow free and preserving full pronation & supination;     – wrist disarticulation retains distal radio-ulnar joint preserves more forearm rotation, & retaining distal radial flare dramatically … Read more