Pre-operative range of movement (expressed as a percentage of the total ROM of the unaffected side) was 51.5 % (range 23.8–67.2). The mean postoperative ROM was 85.4% (range 56.2 – 99.3). External rotation improved from 41.7% (range 23.5 – 81.5) of the unaffected side preoperatively to 77.7% (range 44.1 – 105.3) at final review. Abduction improved from 47.4 % (range 23.3 – 70.6) to 85.4% (range 49.7 – 100) and forward flexion improved from 59.1% (range 33.5 – 73.9) to 90o (range 64.3 – 100.6). No patients required further manipulation.