PURPOSE To determine hand surface landmarks and measurements that may be useful in localizing the A1 pulley and digital neurovascular structures in the treatment of trigger thumb. METHODS We highlighted 4 surface landmarks in 20 adult cadaveric hands: the radial border of the index finger, the ulnar border of the thumb, the thumb interphalangeal joint flexion creases, and the thumb metacarpop...

Rhythmic myoclonus in an arm began abruptly following an injury and persisted continuously for six years. Topographical EMG showed abnormal activity confined to muscles innervated by the axillary and radial nerves from the posterior cord of the brachial plexus. Abduction of the arm above horizontal level stopped myoclonus and EMG discharges. EEG was normal. It is suggested that the myoclonus wa...

T he radial nerve is the most frequently injured of the three major peripheral nerves in the upper extremity.u It is most vulnerable to injury at the mid-humeral level, since it lies superficially and wraps around the spiral groove of the humerus. The most common causes of radial palsy are fractures of the humerus, elbow dislocations, and Monteggia fracture-dislocations. Barton states that one ...

The experience of numerous cases of surgical operations carried out over the ten years from 1990-2000, has meant we have been able to reflect on the fact that the median, ulnar, radial (upper extremity), tibial and external popliteal sciatic (lower extremity) nerves are more greatly exposed to compressive pathology. This is due to certain anatomical topographical relationships with canals, semi...

INTRODUCTION Restoring elbow flexion remains the first step in the management of total palsy of the brachial plexus. Non avulsed upper roots may be grafted on the musculocutaneous nerve. When this nerve is entirely grafted, some motor fibres regenerate within the sensory fibres quota. Aiming potential utilization of these lost motor fibres, we attempted suturing the sensory branch of the muscul...

Eighty percent of 50 dissected cadaver palms showed a communicating branch between the fourth and third common digital nerves (ulnar and median origins, respectively). The branch commonly crossed the palm with the superficial arterial arch and usually provided sensory fibers from a branch of the superficial ulnar nerve into the ring finger radial digital nerve. Caution should be taken during ca...

BACKGROUND Surgical treatment of neuromas involves excision of neuromas proximally to the level of grossly "normal" fascicles; however, proximal changes at the axonal level may have both functional and therapeutic implications with regard to amputated nerves. In order to better understand the retrograde "zone of injury" that occurs after nerve transection, we investigated the gross and histolog...

The index branch of the radial cutaneous nerve has been demonstrated as a constant nerve which can readily biopsied under local anesthesia and yields a nerve which is of suitable size for quantitative and qualitative studies both by light and electron microscopy. It supplies a limited but constant area where the sensory loss does not disturb the patient. Definite ultrastructural changes have be...

BACKGROUND The incidence of neurological complications in the forearm after radial artery harvesting varies in the literature, ranging from 2% to more than 50%. Also, the areas affected and the type of neurological complications differ a lot. Peripheral nerve injuries may be divided into three types: neuroapraxia (conduction block that recovers within 3 months), axonotmesis (recovers 1 ml/day) ...