- Partial tear, complete tear in the injection compared with no injection, respectively: Sn 93.8% and 100% compared with 91.3% and 93.8%; Sp 100% and 85.7% compared with 96.2% and 87.5%; Acc 96.0% and 96.0% compared with 93.1% and 91.7%; PPV 100% and 94.7% compared with 97.7% and 93.8%; NPV 90.0% and 100% compared with 86.2% and 87.5%.