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Seven cases of above-knee amputation stump breakdown following surgery for arteriosclerosis obliterans were successfully treated with Travase ointment. (Bacillus subtilis proteinase). Rehabilitation was facilitated because secondary closure of the previously infected necrotic wounds could be more rapidly undertaken.
This report describes the use of clear plastic bags on vinyl chloride-vinylidine chloride copolymer (also known as S Film) for the postoperative management of amputation stumps. The bags are shrunk to the stump by the application of heat and act as a primary dressing. Their use has been effective in controlling postoperative oedema and infection as well as giving the surgeon direct visual access to the stump without disturbing the wound. A case of a below-knee amputation managed by this method is described.
With the aid of microangiography the vascularization in the amputation stumps of 108 rabbits was studied, both in extremities with normal circulation and in those supplied with collaterals. It was found that the vascularization of the normal leg was altered by amputation, with the development of newly-formed, pathological, spirally-twisted vessels. Closure of the stump with myoplasty, however, counteracted this vessel formation, and hypervascularization took place through normal arteries. After amputation of extremities supplied with collaterals, the influence of amputation on collateral function and vascularization in the amputation stump was dependent on the time interval between arterial occlusion and amputation.
The osseous healing process of the amputation stump was investigated in adult rabbits. Histological investigation showed that the medullary cavity was closed after 2-3 weeks, chiefly by endosteal callus. After closure of the cavity there was a gradual spongious change in the bone tip and simultaneously the cortex atrophied and the medullary cavity dilated. After amputation on the crus bone rebuilding dominated, whereas after amputation on the femur deterioration of bone was most noticeable. A combination of amputation and medullary plugging caused a change in the course of healing. The medullary cavity did not close until 7-10 weeks after operation and there was distinct periosteal callus formation. The microangiographic investigation showed a transient hypervascularization in the cortex 3-4 weeks after amputation; whereas after simultaneous plugging of the medullary cavity the hypervascularization continued for up to 7 weeks after operation. Following amputation proximally on the crus the arterial supply of the cortex came mainly from the periost, whereas the cortex after distal amputation was vascularized from the medullary cavity. This finding can be due to an interruption of the arterial supply from the nutrient artery associated with proximal amputation, whereas this artery remains intact with amputation distally on the crus.
Two patients are presented with muscle spasms in an amputation stump. Neither patient experienced neuropathic pain nor phantom sensations, though phantom sensory phenomena, severe pain, and lack of response to treatment is characteristic of reported cases. One patient, a 75 year old man, has had myoclonic activity of the stump for more than two years, and the other, a 79 year old woman, recovered spontaneously after three months and is symptom free after a one year follow up. We emphasise the lack of association with pain and the need to consider spontaneous improvement when therapy is evaluated.
The successful use of a parascapular fasciocutaneous flap to cover an above-elbow amputation stump with exposed bone is described. Better stability of the stump to pressure (or manipulations), a relatively early one-stage surgical procedure and diminished possibility of later contracture leads to a better long-term outcome.
Verrucous carcinoma of the skin is a rare cancer which tends to appear on the soles of the feet, although it can appear elsewhere on the cutaneous surface. It has not, to our knowledge, been previously reported on a leg amputation stump.
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