BACKGROUND: Mirror therapy has been used as an alternative stimulus to feed the somatosensory
cortex in an attempt to preserve hand cortical representation with better
functional results.OBJECTIVE: To analyze the short-term functional outcome of an early re-education program
using mirror therapy compared to a late classic sensory program for hand nerve
repair.METHOD: This is a randomized controlled trial. We assessed 20 patients with median and
ulnar nerve and flexor tendon repair using the Rosen Score combined with the DASH
questionnaire. The early phase group using mirror therapy began on the first
postoperative week and lasted 5 months. The control group received classic sensory
re-education when the protective sensation threshold was restored. All
participants received a patient education booklet and were submitted to the
modified Duran protocol for flexor tendon repair. The assessments were performed
by the same investigator blinded to the allocated treatment. Mann-Whitney Test and
Effect Size using Cohen's d score were used for inter-group comparisons at 3 and 6
months after intervention.RESULTS:The primary outcome (Rosen score) values for the Mirror Therapy group and classic
therapy control group after 3 and 6 months were 1.68 (SD=0.5); 1.96 (SD=0.56) and
1.65 (SD=0.52); 1.51 (SD=0.62), respectively. No between-group differences were
observed.CONCLUSION: Although some clinical improvement was observed, mirror therapy was not shown to
be more effective than late sensory re-education in an intermediate phase of nerve
repair in the hand. Replication is needed to confirm these findings.