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Biomedical subjects

T Perrin

Publications and source records attributed to T Perrin.

4 recordsLinked to original sources

Occupational need in severe dementia: a descriptive study.

This project represents the first phase of a larger study, the whole of which is intended to demonstrate the occupational need of elderly persons, in hospital or residential settings, who have severe dementia and to identify those therapeutic approaches which serve to meet such need. One hundred and nine severely impaired persons in nine dementia care units were each observed over the course of a day, using the dementia care mapping instrument. Results indicate a severe dearth of occupational provision for this client group, most of whom spent the greater part of their day unoccupied. They also highlight the conditions of minimum well-being experienced by most residents for most of the time. The anomaly of those units whose dementia care mapping scores did not match the perceived quality of their social and physical environments is discussed. A hypothesis of an altered perception of environment in severely impaired persons is proposed.

Aged↗

Functional evaluation of total hip arthroplasty with five- to ten-year follow-up evaluation.

Forty-seven patients with unilateral hip disease had a preoperative and postoperative gait analysis of total hip arthroplasty with a follow-up period of five to ten years. The object was to correlate the levels of function with mechanical loosening. Unilateral total hip arthroplasty in uncomplicated patients restored function to 80% of normal over a two- to four-year period. Patients followed longer than five years appeared to have an accelerated decline in function unassociated with pain. No Class C patient, regardless of age or gait velocity, developed loosening or required revision of the hip prosthesis. Survivorship studies revealed an 85%-90% incidence of loosening by the seventh postoperative year in Class A patients 55 years or younger and those walking preoperatively at more than 50% of normal gait velocity. In these same two groups of patients, the probability of revision for mechanical failure by ten years is 58% for age and 66% for fast walkers. The majority of patients in this study had a technical rating not acceptable by present standards so that these results represent most likely the worst prognosis for longevity of total hip arthroplasty. In high-risk patients, protected ambulation with crutches for six months postoperation may improve their prognosis.

Female↗

Electromyographic analysis of equinovarus following stroke.

The pattern of muscle activity was determined in 40 hemiplegic stroke patients with equinus, equinovarus or varus deformities. Although the exact pattern of muscle activity varied with each patient, the following general conclusions are possible. Premature firing of the triceps surae due to release of primitive locomotor control mechanisms and a hyperactive stretch response during limb loading are important causes of equinus. Prolonged firing of the tibialis anterior during stance and inactivity of the peroneus brevis are the principal factors responsible for varus.

Cerebrovascular Disorders↗