Nihon Seikeigeka Gakkai zasshi
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Nippon Seikeigeka Gakkai Zasshi · Jun 1986
Experimental study on thermal burns caused by plaster bandage.
Plaster bandage is frequently used in the field of orthopaedic surgery. Little is known however of thermal burns caused by plaster bandage. Experience has shown that heat producing levels differ depending on application conditions, i.e., water temperature into which plaster of Paris is dipped, thickness of the plaster cast, kind of plaster, etc. ⋯ The highest skin temperature of 47.7 degrees C was obtained upon application of a plaster bandage made of 30 layers of plaster with short setting time, dipped in water at 42 degrees C. In this condition the examinee had a first degree burn on the skin surface. Thus, care must be taken in applying a plaster bandage to assure that it does not cause a serious burn to the skin.
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Complications of total knee replacement were studied by following up 218 cases operated in our clinic. The average follow-up time ranged from 24 months to 101 months (mean 44.3 months). The three most serious types of complication were: significant loosening in 8 knees; deep infection in 5 knees; and fracture in 7 knees. ⋯ The incidence of complications in the rheumatic group tended to be greater than that in the osteoarthritic group. The incidence of complications was significantly higher in the severely deteriorated group than in the not severely deteriorated group; and the incidence of complications in the group treated in combination with Anametric, Total Condylar and GUEPAR prosthesis was also significantly higher than in the group treated with the Kinematic Knee Prosthesis. Though 32 reoperations were performed in 23 knees, functional prognosis was not good in most cases.
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Nippon Seikeigeka Gakkai Zasshi · Mar 1985
Case Reports[Another new etiology of vertebral artery insufficiency--a case of dynamic entrapment of the vertebral artery by the cervical nerve].
In the etiology of vertebral artery insufficiency, cervical spondylosis with uncal osteophyte, Power's syndrome, A-V malformation and atheromatous narrowing have been recognized. We recently experienced a patient with episodic vertigo and hyposthenia of the left side of the body on rotational movement of the neck. ⋯ With the release and resection of the injured nerve, the patient became free of any vertigo or hyposthenia. Although this kind of etiology involving entrapment-constriction of the vertebral artery by the cervical nerve after trauma has not been reported at all in the literature, we should always keep this in mind when dealing with patients with cervical vertigo after trauma.
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Nippon Seikeigeka Gakkai Zasshi · Aug 1984
[Clinical study of cross-reinnervation in obstetrical paralysis].
It is known that cross-reinnervation occurs when regenerating nerve fibers recombine in brachial plexus injury, especially in obstetrical paralysis. This cross-reinnervation causes abnormal contraction in many muscles simultaneously during voluntary movement. To date, however, little has been reported on its pathophysiology, severity and prognosis. ⋯ The site of cross-reinnervation depends on the severity of paralysis. Usually it spreads from the 5th and 6th cervical nerve roots to the upper trunk, medial trunk, posterior cord and lastly to the lower trunk and medial cord, determined by the severity of paralysis. This agrees with the way of spreading of obstetrical paralysis.
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Nippon Seikeigeka Gakkai Zasshi · Feb 1984
[Biomechanical studies on fracture fixation mechanism of the clover leaf medullary nail].
The intramedullary nailing method described by Küntscher is used widely now as an excellent treatment of the fracture of the long bone. However, it is well known from clinical experience that fracture fixation of the clover leaf nail is not so strong and especially rotational fixation is very poor. For the purpose of re-evaluating fracture fixation mechanism with Küntscher's nail, the following studies were performed. ⋯ Stress distribution in cross section of some commercially available clover leaf nails was investigated by the technique of photoelastography. Total expansive force of the clover leaf nail was obtained by the calculation based on the measured values. From these investigations the author concludes that the clover leaf nail does not fix the fracture by the expansive spring mechanism only, as was originally claimed by Küntscher.