Table 3 Preoperative EMG/NCS results of the two groups
Rotator cuff | Spontaneous potential | Motor unit potential | recruitment pattern | Compound muscle action potential | |||
|---|---|---|---|---|---|---|---|
Fibrillation potentials (0, 1 + , 2 + , 3+) | Positive sharp waves (0, 1 + , 2 + , 3+) | Increased duration (n) | Increased amplitude (n) | Weaken (n) | Latency (−x ± s, ms) | Amplitude (−x ± s, mV) | |
Releasing group (A) | |||||||
 supraspinatus | 5, 5, 0, 0 | 6, 4, 0, 0 | 2 | 2 | 2 | 3.07 ± 0.82 | 10.08 ± 1.98 |
 infraspinatus | 0, 2, 5, 3 | 0, 2, 7, 1 | 10 | 9 | 10 | 7.75 ± 1.09 | 7.74 ± 1.22 |
Non-releasing group (B) | |||||||
 supraspinatus | 5, 4, 1, 0 | 5, 5, 0, 0 | 3 | 2 | 2 | 3.30 ± 0.87 | 9.90 ± 1.78 |
 infraspinatus | 0, 1, 6, 3 | 0, 2, 5, 3 | 10 | 9 | 9 | 7.63 ± 1.15 | 7.41 ± 1.28 |