Using a scintigraphic technique based on anautologous injection of . 99m. Tc-labelled erythrocytes, we have evaluated the efficiency of different exsanguination procedures in the upper limb of ten healthy male volunteers. The methods were elevation alone, the use of the Esmarch bandage or a gauze bandage, the Pomidor roll-cuff, the squeeze method and the Urias bag. The various procedures gave the following median percentage reductions of blood volumes: elevation for 5 seconds 44%, 15 seconds 45%, 30 seconds 46%, 60 seconds 46% and 4 minutes 42%, the Esmarch bandage 69%, a gauze bandage 63%, the Pomidor roll-cuff 66%, the squeeze method 53%, and the Urias bag 57%. With regard to elevation alone no significant differences were found. All the external methods were significantly more effective than elevation alone. Overall, the squeeze method was found to be the best method of exsanguination before inflation of a tourniquet, because it is effective, fast, practical and inexpensive

1. Orthotic systems for the upper limb are described. 2. Two patients are described to illustrate the value of the systems

We describe our experience with vascularised bone grafting for the treatment of fibrous dysplasia of the upper limb in eight patients, five men and three women, aged between 17 and 36 years. The site was in the humerus in six and the radius in two. Persistent pain, progression of the lesion and pathological fracture with delayed union were the indications for surgical intervention. We used a vascularised fibular graft after curettage of the lesion. Function and radiological progress were serially monitored. Early radiological union of the graft occurred at periods ranging from 8 to 14 weeks. The mean period for reconstitution of the diameter of the bone was 14 months (12 to 18) predominantly through inductive formation of bone around the vascularised graft, which was a prominent feature in all patients. There were no recurrences and none of the grafts sustained a fracture or failed to unite. After operation function was excellent in three patients and good in five. Vascularised bone grafts provide a safe and reliable means of ensuring good continuity of bone with little risk of recurrence and failure

1. A description of the planning for the application of a powered prosthesis to a child with bilateral upper limb deficiency is given. 2. Details of twenty such children are recorded

A review is presented of 41 patients with traumatic tetraplegia on whom reconstructive surgery of the upper limb was carried out. Twelve patients were followed up for more than 10 years after operation and the average period overall was seven and a half years. Tendon transfers were made with the aim of providing extension of the elbow or restoring a useful grasp or a combination of both. The assessment was carried out on four main aspects: the function of the elbow, the function of the hand, the ability to carry out the activities of daily living and the effect of the surgical reconstruction on the personal and social achievement of the patient

The clinical features, management and outcome of bleeding into the muscles of the upper limb of 44 patients are reported. Of 158 episodes of bleeding, 99% were treated within two hours of onset of symptoms and the mean time to complete restoration of function was 2.1 days. The most frequent site of bleeding was the deltoid muscle (24%), followed by the forearm flexors (23.5%), brachioradialis (19.5%), biceps (14%), forearm extensors (11%) and triceps (8%). The majority of bleeds presented with pain, either on movement or at rest, or with tenderness. Bleeds into the biceps required the most transfusions (mean 2.00) and took the longest to resolve (mean 4 days). Bleeding into the flexors and extensors of the forearm resolved most rapidly. The policy of early treatment has been shown to be effective in prompting early and complete recovery

Our aim was to determine if a tourniquet placed on the forearm has any advantage in clinical practice over the usual position on the upper arm. We randomised 50 patients who were undergoing an open operation for carpal tunnel syndrome under local anaesthesia into two groups. One had a tourniquet on the upper arm and the other on the forearm. The blood pressure, pulse, and level of pain were recorded at intervals of five minutes during the operation. The surgeons were also asked to evaluate the quality of the anaesthesia, the bloodless field, and the site of the tourniquet.

The patients tolerated the tourniquet on the upper arm and forearm equally well. The surgeons had some difficulties when it was placed on the forearm. We therefore recommend placement of a tourniquet on the upper arm for operations on the hand and wrist which are carried out under local anaesthesia.

1. The working of an electrically powered prosthesis is described.

2. The advantages of this method are discussed.