– Discussion: – this a distal “Step Cut” metatarsal osteotomy that displaces metatarsal head laterally in order to correct hallux valgus deformity and metatasus adductus; – Mitchell procedure is carried out more proximally than Chevron osteotomy, & can correct more severe deformities than Chevron; – this procedure is applicable to … Read more
– Discussion of Treatment of Recent Dislocations and Fracture-Dislocations of the Shoulder – maintains that biceps and subscapularis muscle offers the chief resistance to reduction; – in anatomic position, w/ humerus at side, direction of various muscles around shoulder girdle seems to completely haphazard; – constancy of this effect must be attributed … Read more
– Discussion: – meniscal cells while typical chondrocytes, are called fibrochondrocytes because they synthesize fibrocartilage matrix, rather than hyaline cartilage matrix typical of articular cartilage; – menisci are composed of circumferentially oriented collagen fibers, which are parallel to its peripheral border; – orientation of type I collagen fiber bundles is the major determinant … Read more
– Discussion: – in the normal foot, metatarsal heads bear one half of a person’s body wt, when the foot is plantigrade; – the first metatarsal normally bears half the wt of the forefoot; – long 2nd metatarsal can contribute to pressure under metatarsal head; – limitation of dorsiflexion (from heel cord contracture or ankle … Read more
– Discussion: Zone IV: – extends from distal end of transverse retinacular ligament to proximal margin; – combined nerve – tendon procedure may be delayed for 21 days if wound is contaminated, if crushing trauma has occurred; – median nerve management: (nerve repair) – lacerations of flexor tendons within … Read more
– See: Arterial Development of the Limbs: – Embryologic Anatomy: – subclavian artery projects into early upper limb bud in axial position, its proximal portion becoming subclavian-axillary- brachial trunk, & its distal portion becoming interosseous artery that initially supplies a plexus of arteries in the primitive hand; … Read more
– Carpal Tunnel Syndrome – Combined Lesions of the Median and Ulnar Nerves: – High Median Nerve Lesions – Low Median Nerve Lesions – Median Nerve Block – Median Nerve Injuries at the Wrist – Martin Gruber Anastomosis – Anatomy: – roots: C6, C7, C8, and T1 (? C5) – brachial plexus – cords: – … Read more
– Discussion: – motivation: w/ maximal elbow flexion, high extraneural pressures occur at the medial epicondyle; – hence the medial epicondyle is a major impinging structure which forces the ulnar nerve to make a sharp turn whenever the elbow is maximally flexed; – medial … Read more
– See: Medial Approach: – Discussion: – medial epicondyle is common origin of several flexor muscles of hand and wrist; – when medial epicondyle is frxed, flexor muscles pull fragment distally; – during surgical procedure care must be made to protect ulnar nerve; – Fixation Stratedgy: – … Read more
– Anatomy: – arises from anterior division of lower trunk: C8 & T1; – medial cord branches into ulnar nerve & the medial root of the median nerve; – medial pectoral – medial branchial cutaneous – medial antebrachial cutaneous – division of medial … Read more