The history of the South African Society for Surgery of the Hand 1969-1994.
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Biomedical subjects
Publications and source records attributed to U Mennen.
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Disuse atrophy of the quadriceps muscle and knee joint stiffness at the end of a 3-month period of immobilisation in patients with a fracture of the shaft of the femur is a common problem. A new approach to it was recently researched by applying a quadriceps endurance programme to a sample of this target population. Endurance capacity of matched experimental and control groups, consisting of 11 patients each, was tested at the end of the immobilisation period. Only the experimental group received the treatment intervention. Quadriceps endurance capacity in the experimental group at the end of the test period was at a 97% level compared with normal, uninjured subjects, while the control group's performance level was 57%. The difference is highly significant (P less than 0.0001). The problem of disuse atrophy had been successfully overcome in the experimental group. The unaffected leg of 10 patients from the same target population was also tested at the end of the immobilisation period. The mean value achieved was similar to the norm, i.e. there was no significant difference when compared with normal quadriceps endurance capacity.
A new technique of opposition transfer uses the extensor pollicis longus tendon, which is sectioned just proximal to the metacarpophalangeal joint of the thumb, routed through the interosseous membrane, advanced subcutaneously across the anterior surface of the forearm but deep to the extensor pollicis brevis tendon, and sutured to its distal stump with a 1 cm overlap. This technique differs from th at of Riley et al. in several significant ways, although the same motor is used. Experience in 35 cases has yielded good or excellent results in 31 instances.
The latissimus dorsi transfer and the Steindler flexorplasty were compared to restore elbow flexion in seven cases. All patients had sustained upper trunk brachial plexus injuries and were adults of productive age. Both operations were successful. The results showed that the latissimus dorsi transfer provides more powerful elbow flexion and a greater range of movement one year post-operatively. The criteria for selection of candidates for both operations are set out.
A new method to restore flexion of fingers is described whereby the plantaris tendon (or part of the tendo Achillis), with its bony insertion, is transferred to the finger. Strong bony anchorage is achieved in the distal phalanx, while a sound interweaving suture technique proximally in the palm will ensure enough strength to allow immediate mobilisation.
100 consecutive patients whose finger had been bitten by another person, or who had cut it on a tooth in a fight, have been studied. 82 healed completely but 18 eventually needed amputation. Early and thorough debridement is required, plus a suitable mixture of antibiotics. Once infection is established in bone or tendon sheath, amputation is often needed, but most infected joints can be saved.
It has been stated, but not reported, that compartment syndrome can occur in a transferred muscle (Bostwick, 1979). We report this unusual complication in two consecutive cases in which a latissimus dorsi muscle transfer had been done.
An improved technique to motorise the triceps is described whereby the bony insertion of the deltoid into the humerus is detached. Similarly the bony insertion of the triceps into the olecranon is detached and a 10 mm. width of this central section of the triceps tendon and aponeurosis reflected with its bony insertion. The two bony blocks are sutured together by stainless steel wire. This technique allows for early active mobilisation of the elbow which allows the patient early rehabilitation, prevents adhesions and eliminates the disadvantage of transferred tendons elongating. These complications were seen with earlier versions of motorisation of the triceps. Careful patient selection and pre-operative evaluation is of the utmost importance to achieve a successful motorised elbow extension procedure.
A newborn baby with a severe congenital constriction band associated with pseudarthrosis and impending gangrene of the foot is described. Early one-stage circumferential excision of the band with immediate wound closure by multiple Z-plasties salvaged the compromised foot. The pseudarthrosis indicated the severely compressive nature of the fibrous band. The uneventful healing of the pseudarthrosis and the full recovery of neurovascular function points to essential normal tissue underlying the constricting band.
Since internal fixation of metacarpal fractures has a high complication rate, most fractures should be managed conservatively, with the emphasis on early mobilisation. However, some fractures do need internal stabilisation. We propose the use of the clamp-on plate, which is simple to use, has a very low complication rate and allows immediate mobilisation.
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A clamp-on plate has been developed to stabilize long-bone diaphyseal fractures. Its design is entirely different from conventional screw-secured plates. Minimal soft tissue, especially periosteal, dissection is required for application. Since there is no intramedullary encroachment, no further damage is done to the endosteal blood supply. One hundred seventy-one fractures of the radius and/or ulna were followed for at least 6 months. There were no nonunions. The average time to union was 12.3 weeks, compared to 21.4 weeks for similarly selected fractures of the radius and/or ulna treated during the same time framework by conventional screw-secured plating methods. The fact that union is reliable and can be achieved earlier than with conventional screw-secured plates supports the author's contention that sparing of the blood supply to the fracture and thus, the biological integrity of fracture healing play a parallel role along with biomechanical stability in achieving fracture union.
The technique and measurement of the bone strength of the radius and ulna in the non-human primate are presented. The aim of this study was to find a relationship between the mechanical strength of an intact radius and ulna forearm and its collateral isolated radius and isolated ulna which would be of assistance in the studies on mechanical bone strength and bone healing. The findings include: (1) bone strength is significantly influenced by factors such as age, sex, and body weight; (2) wide variation in normal bone-tissue strength exists among similar individuals; (3) there are differences in bone strength in the same individual if contralateral sides are compared; (4) growing bones are very elastic and are able to bend to an angle of up to 90 degrees before a fracture occurs; (5) soft tissue structures (such as muscle, interosseous membrane, and tendons) do not contribute to the strength of a diaphysis in low velocity injuries; and (6) the midshaft area of the radius is approximately 10% stronger than that of the ulna in the adult.
When dealing with injury from high-voltage electricity, it must be realised that a crush injury is a more appropriate term than a burn injury. The eventual usefulness of the arm and/or hand should be weighed against the necessarily very intensive surgical treatment of the limb. This evaluation should be done during the initial stages, since it will influence early management. The treatment should therefore be aggressive and should be focused on a high renal output as well as an extensive debridement, which may include amputation at an early stage. Six recent cases, demonstrating this approach, are reported.
A desmoplastic fibroma occurring in the distal forearm of a 14-year-old black boy is described and the historical background of the tumour together with an outline of the disease emphasizes the differential diagnosis between this condition and other fibrous lesions of soft tissue and bone. The clinical and radiological features as well as the treatment of desmoplastic fibroma are discussed. It is believed that this is the first such patient reported in Africa.
In a case of traumatic loss of the whole of the distal third of the quadriceps mechanism as well as the overlying skin, knee extension was restored by anterior transfer of the lateral and medial hamstring muscles into the patella.
In 1979 the first Negro patient with Dupuytren's Contracture who had no evidence of Caucasoid Admixture in his genetic make-up was reported on. Another five such cases are presented.