Influence of proprioceptive training in the improvement of neuromuscular performance after ACL reconstruction

Abstract

ACL injury leads to a decrease in proprioceptive abilities, which can be improved with ACL surgery and postoperative rehabilitation. The goal of our study was to investigate whether the impact of coordinative training can be differentiated from the influence of surgery on proprioceptive improvement, and whether there is a correlation between improvement in coordinative abilities and other objective parameters of functional recovery. This follow-up study included 45 patients who had undergone ACL reconstruction and who were randomised into a conservative (TH-C) and an intensive (TH-I) rehabilitation group. In the TH-I group, coordinative training began earlier due to unrestricted weight-bearing. The groups were first compared preoperatively, then postoperatively, after 6 weeks, 4, 6, 9, and 12 months via the single leg stance test, the one leg hop test, the Lysholm knee score, and the Tegner score. A faster recovery of coordinative skills was registered in the TH-I group. Already after 6 weeks, highly statistically significant progress in one leg stance abilities was noticed, while in the TH-C group the same was not noticed until 4 months after surgery (p < 0.01). Such a result speaks for the distinct influence of proprioceptive training on coordinative abilities. Also, a highly statistically significant correlation was noticed between the single leg stance, one leg hop, Lysholm, and Tegner tests (p < 0.01), which points out the importance of a good rehabilitation programme, since neuromuscular performance cannot be separated from other parameters of functional recovery.