Prevalence of rotator cuff tendon pathology according to age decile and arm dominance
| Age group (years) | ||||||||
| 60–69 (n=175) | 70–79 (n=220) | 80–89 (n=69) | Total (N=464) | |||||
| Count | % | Count | % | Count | % | Count | % | |
| Dominant arm | ||||||||
| Normal tendon | 102 | 58.30 | 111 | 50.50 | 22 | 31.90 | 235 | 50.60 |
| Abnormal tendon/partial thickness tear | 54 | 30.90 | 67 | 30.50 | 34 | 49.30 | 155 | 33.40 |
| Full-thickness tear, 0–2.5 cm | 14 | 8.00 | 27 | 12.30 | 9 | 13.00 | 50 | 10.80 |
| Full-thickness tear, >2.5 cm | 5 | 2.90 | 15 | 6.80 | 4 | 5.80 | 24 | 5.20 |
| Non-dominant arm | ||||||||
| Normal tendon | 115 | 65.70 | 122 | 55.50 | 38 | 55.10 | 275 | 59.30 |
| Abnormal tendon/partial thickness tear | 49 | 28.00 | 70 | 31.80 | 20 | 29.00 | 139 | 30.00 |
| Full-thickness tear, 0–2.5 cm | 10 | 5.70 | 18 | 8.20 | 7 | 10.10 | 35 | 7.50 |
| Full-thickness tear, >2.5 cm | 1 | 0.60 | 10 | 4.50 | 4 | 5.80 | 15 | 3.20 |