The Hip book

Above Knee Amputation Prosthesis

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

Above Elbow Amputation

(see also: Upper Extremity Prosthetics) Surgical Considerations consider the Marquardt Osteotomy of the Humerus: supracondylar, to put 15-20 deg of posterior angulation at this site, to facilitate suspension and provide rotational control; distal piece must be at least 5 cm long; stagger the median and ulnar nerve resection levels to avoid a large confluent neuroma

About WRIGHTLOCK and the OCS Instrumentation

Development of the design of the WRIGHTLOCK Spinal Fixation System began over eight years ago in conjunction with Dr. Ben Allen, Jr., Chief of Staff at the Shriners Hospital for Crippled Children in Greenville, SC. Its design was based on the need for a spinal system that was both low profile and high strength for … Read more

Abnormalities Associated With Vitamin D

(see also: Vit D Discussion, Calcitriol/Rocalrol/Calcifediol) Discussion primary function of l,25-Vitamin D3 is to maintain skeletal homeostasis as well as for maintenance of plasma Ca homeostasis; primary effect of lack of Vit D is decrease in miceralization of newly formed bone matrix (osteoid); rate of bone formation is decreased; net result is less total bone … Read more

Abductors of the Shoulder

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

Abductor Pollicis Brevis

origin tuberosity of the scaphoid and the ridge of trapezium; another slip originates from the transverse carpal ligament; insertion Lateral surface of the base of the proximal phalanx of thumb; action abdcution and medial rotation of the metacarpal of the thumb; synergists abductor pollicis longus, EPL; nerve supply median nerve, C8, T1; Discussion although opposition … Read more

Abductor Hallucis

(see also: Plantar Muscles of the Foot) Origin medial process of the calcaneus, flexor retinaculum, plantar aponeurosis and intermuscular septum. Insertion joins with the medial tendon of the flexor hallucis brevis into the plantar half of the medial side of the base of the proximal phalanx of the great toe. Action Abducts the great toe … Read more

Abductor Digiti Minimi Brevis

(see also: Plantar Muscles of the Foot, Innerv. Musc. Lower Limb) Origin: the lateral process of the tuberosity of calcaneus. Insertion: lateral side of the base of the proximal phalanx of the 5th toe. Action: Spreads the 5th toe away from the 4th toe. Nerve Supply: lateral plantar nerve, S1, S2