Clinical features of patients
| Patient | Age | Sex | Interval (months) | Shoulder pain | Duration (weeks) | Family history | Patient history |
|---|---|---|---|---|---|---|---|
| 1 | 29 | M | 2.0 | R | 2 | − | − |
| 2 | 67 | M | 8.0 | R | 3 | − | − |
| 3 | 51 | M | 1.5 | R | 3 | − | − |
| 4 | 68 | M | 1.0 | L | 3 | + | − |
| 5 | 48 | M | 2.0 | R,L | 3 | − | − |
| 6 | 62 | M | 2.0 | R | 4 | − | R side 2 years ago |
| 7 | 37 | F | 2.5 | L | 2 | − | R side 9 years ago |
| 8 | 58 | M | 0.5 | R | 2 | − | − |
R=Right; L=left. Interval refers to the time in months from the onset of symptoms to the initial examination and neurophysiological study. Duration refers to the duration of shoulder pain. Patient 4 had two affected siblings. Patient 5 had salmonella enteritis 1 week before onset. Patient 7 had a caesarean delivery 3 weeks before onset. Patient 8 had a 20 year history of limb girdle dystrophy.