The Effect of Pitch Count on Shoulder Kinematics and Strength in Adolescent Baseball Pitchers

rotational osteotomy because of incomplete reduction and head collapse at tenmonths postoperatively. At 181months the remaining head had collapsed and a hemiarthroplasty was implanted. A second patient had an excellent result until 180months postoperatively, then synovial chondromatosis which led to revision with a RTSA at 186 months after allograft reconstruction. Thus at final follow-up, two of the 19 reviewed patients had a prosthesis. Of the other seventeen, 4 had radiographically advanced, 4 hadmild and nine had no or minimal OA. 18 shoulders were subjectively (including two with replacement surgery) excellent none good, one fair. The final Constant Score averaged 77 points (range 52-98 p), the subjective shoulder value averaged 88% (range 75-100%) and only two patients had mild to moderate pain. Mean active anterior elevation was 145 and mean external rotation with the arm at the side was 42 degrees. Conclusion: Segmental reconstruction of humeral head defects for large anteromedial impaction fractures caused by locked posterior dislocations durably restores stability and freedom from pain with an excellent subjective long-term outcome. Development and progression of osteoarthritis did occur but was not associated with significant pain, or work disability or need for disability payments. Set 1 Set 2 Set 3 Set 4 Set 5 Set 6