Expanding forearm hematoma after apparent minor injury.
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The treatment of injuries inflicted on hands and occasionally forearms by crushing between hot rigid surfaces (thermal crush injury) is usually complex because of the possibility of fractures, nerve and tendon injuries, as well as heat destruction of the skin which also may be macerated. A review of the treatment of 60 patients with thermal crush injuries has defined the more important aspects of treatment including the choice of materials for wound coverage (split thickness skin or tube pedicle tissue graft) and the optimal time for surgical repair of the injury.
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The five patients reported herein had various archery-related injuries of the upper extremities. Acute injuries included arrow laceration of a digital nerve and artery, contusion of forearm skin and subcutaneous tissue, and compression neuropathy of digital nerves from the bowstring. Chronic injuries included bilateral medial epicondylitis and median nerve compression at the wrist, de Quervain's tenosynovitis, and median nerve compression at the elbow. Essential measures for archery safety include use of archery protective gear, use of a light-weight bow, conditioning of the forearm flexor muscles, and modifications in drawing the bowstring.
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Explosive blast causes a pattern of injury including primary blast lung, secondary fragment injury and traumatic amputation of limbs. Major traumatic amputation is rare in survivors of bomb blast but common in those who die. The mechanism of such injury has not been previously determined, but must be established if protective measures are to be developed for members of the armed forces. The nature of 41 traumatic amputations in 29 servicemen who survived to reach medical care after blast injury was investigated to determine the anatomical level of amputation and the pattern of soft tissue damage. Joints were an infrequent site of amputation and the tibial tuberosity was a particularly frequent site of lower-limb severance. Comparison of the pattern of injury was made with that seen in ejecting fast-jet pilots, who frequently suffer major flailing injury; there appears to be a substantially different injury distribution. The accepted mechanism of traumatic amputation, avulsion by the dynamic overpressure, is challenged; it is suggested that the shockwave resulting from an explosion is capable of causing at least bone disruption in a limb.