Differences in Shoulder Internal Rotation Strength Between Baseball Players With Ulnar Collateral Ligament Reconstruction and Healthy Controls

被引:1
作者
Kennedy, Sean M. [1 ,2 ]
Sheedy, Philip [1 ]
Klein, Brooks [1 ,3 ]
Gist, Mason F. [1 ]
Hannon, Joseph P. [1 ,4 ]
Conway, John E. [1 ,5 ]
Creed, Kalyssa [1 ]
Garrison, J. Craig [1 ,6 ]
机构
[1] Texas Hlth Sports Med, Ft Worth, TX USA
[2] IRONMAN Sports Med Inst, Mem Hermann Hlth, Houston, TX 77030 USA
[3] Chicago White Sox, Chicago, IL USA
[4] St Louis Childrens Hosp, Young Athlete Ctr, St Louis, MO 63178 USA
[5] Univ Texas Hlth Sci Ctr Houston, McGovern Med Sch, Dept Orthoped Surg, Houston, TX 77030 USA
[6] Northwestern Univ, Dept Phys Therapy & Human Movement Sci, Chicago, IL 60611 USA
关键词
baseball; UCL; elbow; rotator cuff; THROWING MECHANICS; ELBOW INJURIES; NORMATIVE DATA; KINETIC CHAIN; RISK-FACTORS; PITCHERS; MOTION; RANGE; REHABILITATION; RELIABILITY;
D O I
10.1177/23259671211065025
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Background: Studies have indicated decreased shoulder internal rotation (IR) and external rotation (ER) strength in the throwing limb of baseball players after ulnar collateral ligament injury. There is limited evidence on the recovery of shoulder rotation strength after primary ulnar collateral ligament reconstruction (UCLR). Hypothesis: At the time of return to throwing, baseball players who underwent UCLR would demonstrate decreased IR and ER shoulder strength in the throwing arm as compared with healthy baseball players. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Male competitive high school and collegiate baseball athletes participated in this study. Athletes who underwent UCLR were compared with healthy controls who were matched by age, height, weight, and position. Bilateral isometric shoulder ER and IR strength was measured using a handheld dynamometer for all participants at the time of initial evaluation (UCLR group) and throughout the course of a season (healthy group). Independent t tests were run to calculate mean differences in ER and IR shoulder strength between the groups, with significance set at P < .05. Results: A total of 86 baseball athletes participated in this study (43 UCLR group, 43 healthy group). At the time of return to throwing (mean +/- SD, 194 +/- 30 days postoperatively), the 2 groups demonstrated no significant differences in nonthrowing arm ER or IR strength (P = .143 and .994, respectively). No significant difference was found between groups for throwing arm ER strength (P = .921); however, the UCLR group demonstrated significantly less throwing arm IR strength than the healthy group (144.2 +/- 27.8 vs 157.6 +/- 27.1 N; P = .023). Conclusion: The results of this study demonstrate that throwing arm rotator cuff strength may not fully recover before the initiation of a return-to-throwing program after UCLR. These data provide a potential framework for clinicians to assist in the management and exercise prescription of the baseball athlete after UCLR and before medical release and the initiation of a return-to-throwing program.
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页数:9
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