The mean OSS improved from 26.3 (SD 8.2) at baseline to 41.7 (SD 7.9) at 24 months for arthroscopic surgery and from 25.0 (SD 8.0) to 41.5 (SD 7.9) for open surgery. Intention to treat analysis showed no statistical difference between the groups at 24 months (difference in OSS score = -0.76; 95% CI -2.75, 1.22; p=0.452). The confidence interval excluded the pre-determined clinically important difference in the OSS of three points. The rate of re-tear was not significantly different between the two groups (46.4% for arthroscopic and 38.6% for open surgery (95% CI -6.9, 25.8; p=0.256). Healed repairs had the most improved OSS. These findings were the same when analysed per-protocol.
There is no evidence of difference in effectiveness between open and arthroscopic repair. The rate of re-tear is high in both groups, for all tear sizes and ages and adversely affects outcomes.
|Number of pages||9|
|Journal||The Bone & Joint Journal|
|Publication status||Published - 4 Jan 2017|