ABSTRACT
BACKGROUND: Little data exist on the effect of routine use of postoperative drainage after arthroscopic anterior cruciate ligament reconstruction, although clinical studies of other procedures have not shown benefit to this practice. HYPOTHESIS: Use of a postoperative drain will not result in decreased suprapatellar girth, increased range of motion, and decreased pain compared with nonuse. STUDY DESIGN: Prospective randomized clinical trial. METHODS: Twenty-one patients undergoing arthroscopically assisted bone-patellar tendon-bone anterior cruciate ligament reconstruction were randomly assigned to receive a drain for 24 hours (12 patients) or no drain (9 patients). Data for comparison of groups were collected daily through postoperative day 7. RESULTS: Pain scores on a visual analog scale demonstrated the same improving trend over time for both treatment and control groups; however, the treatment group had significantly higher average pain scores, except on day 7. Differences in suprapatellar girth, flexion, and extension were not found to be statistically significant between groups. CONCLUSION: Use of a drain after arthroscopically assisted anterior cruciate ligament reconstruction provided no benefit in terms of range of motion, effusion, or pain in the early postoperative period.
Subject(s)
Anterior Cruciate Ligament/surgery , Drainage , Patellar Ligament/transplantation , Adult , Analysis of Variance , Anterior Cruciate Ligament Injuries , Arthroscopy , Female , Humans , Male , Pain Measurement , Postoperative Complications/prevention & control , Postoperative Period , Prospective Studies , Range of Motion, Articular , Plastic Surgery Procedures , Statistics, Nonparametric , Treatment OutcomeABSTRACT
Previous studies have demonstrated an increased energy expenditure with novel tasks. With practice, the energy cost decreases as the body more efficiently recruits motor units. This study examined whether one becomes more efficient after repeated bouts of backward walking. The subjects were 7 healthy subjects between the ages of 23 and 49 years. A backward walking speed was calculated to elicit a VO(2) equal to 60% of the VO(2)max. There were 18 training sessions at the prescribed walking speed 3 d x wk(-1) for 20 min x d(-1). The backward walking speed required to elicit a fixed VO(2) increased between weeks 4 and 6 of the training period. This finding suggests that backward walking is indeed a novel task and that motor learning occurs as a result of practice, leading to a more efficient recruitment of motor units.
