Consecutive adult patients who underwent revision surgery for carpal, cubital, and radial tunnel due to recalcitrant and/or unimproved clinical symptoms were included in our study. In all cases, Avive PUCM was wrapped around the respective nerves (Figs. 1 –2 ). All procedures were performed by one of two fellowship-trained hand surgeons over a period of three years. Eighty patients met initial inclusion criteria for the Avive PUCM group. After propensity score analysis, three subjects from the Avive PUCM group were excluded from subsequent analysis, as they did not fit within the common support (the range of propensity scores that exist in both groups). Ultimately, 77 patients (97 nerves) were analyzed in the Avive PUCM group [47.4% (46/97) median nerve, 39.2% (38/97) ulnar nerve, and 13.4% (13/97) radial nerve].
Demographic data, including patient age, sex, and time to revision surgery, were collected. Average time from revision to most recent follow-up was recorded, as well as the site of membrane placement. Physical examination findings were collected pre- and postoperatively, which included visual analog scale (VAS) pain scores, Static 2-point discrimination, Semmes-Weinstein, grip and pinch strength, range of motion (ROM), and subjective patient satisfaction. The Disabilities of the Arm Shoulder and Hand (QuickDASH) score was also collected postoperatively whenever possible.
Demographic data, including patient age, sex, and time to revision surgery, were collected. Average time from revision to most recent follow-up was recorded, as well as the site of membrane placement. Physical examination findings were collected pre- and postoperatively, which included visual analog scale (VAS) pain scores, Static 2-point discrimination, Semmes-Weinstein, grip and pinch strength, range of motion (ROM), and subjective patient satisfaction. The Disabilities of the Arm Shoulder and Hand (QuickDASH) score was also collected postoperatively whenever possible.
