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Biomedical subjects

D G Messner

Publications and source records attributed to D G Messner.

4 recordsLinked to original sources
PubMedDate not supplied

The acute pivot shift: clinical correlation.

The pivot shift test and its various modifications has been well described for evaluation of chronic anterolateral rotatory insufficiency of the knee. Fifty knees with acute traumatic hemarthrosis were examined under general anesthesia to assess the reliability of the pivot shift in the acute injury. The pivot shift test as described by Galway and MacIntosh was employed. No patients with a history of previous knee injuries were included. Arthrotomy or arthroscopy was performed following the examination in all cases. There were 38 knees with positive shifts, 35 with complete anterior cruciate tears, and 3 with significant partial tears or attenuation of the ligament. The 12 knees with negative shift demonstrated five normal anterior cruciates, five partial tears and two complete tears of the anterior cruciate. Both of the complete tears were associated with complete medial collateral ligament tears and were clinically apparent by drawer and Lachman tests. A positive pivot shift in this study was very accurate for significant anterior cruciate tears. A negative pivot shift ruled out complete anterior cruciate ligament tears but did not preclude the presence of a partial tear. Partial tears associated with a negative pivot shift retained ligament competence. We conclude that: (1) the pivot shift is a direct test of cruciate competence; (2) the pivot shift is present acutely in a very high percentage of cases and does not necessarily develop over time; (3) the pivot shift exam performed under general anesthesia is a very reliable test for significant tears of the anterior cruciate; and (4) the arthroscope remains a useful tool in the evaluation of acute traumatic hemarthrosis, but is not always necessary in establishing competence of the anterior cruciate ligament.

Acute Disease↗
PubMedDate not supplied

The injury experience and training history of the competitive skier with a disability.

The purpose of this investigation was to describe the training history and injury experience of the competitive skier with a disability. A retrospective survey was administered to 68 athletes who participated in the National Handicapped Sports and the United States Association for Blind Athletes Winter National Games held in March 1989. The frequency, length, and specific components of the practice session were obtained. The definition of injury was any trauma to the participant that occurred during any practice, training, or competitive session that resulted in the cessation, limitation, or modification of the athlete's participation for at least 24 hours. The athletes practiced aerobic, anaerobic, and strength training activities two times a week or less. Upper extremities were injured 1.4 times more often than the lower extremities. The number of chronic injuries was greater than the number of acute injuries for both the upper and lower extremity. The thigh and knee were involved in 30% of the acute injuries, followed by the shoulder (25%), and neck and spine (15%). For chronic injuries, the shoulder, thigh/knee complex, and arm and elbow accounted for 73.3% of the total injuries reported. The skier with a disability incurred approximately the same proportion of injuries as the skier without a disability. Conditioning programs should be developed to emphasize both the aerobic and anaerobic energy systems to reduce the number of injuries.

Adult↗