AbstractIntroduction. The isokinetic assessment allows objective evaluation of muscle strength in patients considered for surgery in cases of rotator cuff injury.
Aim. The goal of this study was to define functional disorders of shoulder joint in patients with rotator cuff injury.
Material and methods. The examination was conducted in two groups, ten patients each. One group consisted of subjects with rotator cuff injury while the other was a healthy control group. Isokinetic test was performed with use of Biodex System 4 Pro Device. The following parameters were evaluated: peak torque, peak torque/body weight (peak TQ/BW), total work, average power, range of movement (ROM) and peak torque ratio of external to internal rotators (ERPT/IRPT ratio). Studies of Shoulder Pain and Disability Index (SPADI) scale supplemented clinical evaluation.
Results. Examination indicated a significant deficit of muscle strength during external rotation and ROM limitation only on symptomatic side in shoulder impingement group. Alteration between agonistic and antagonistic muscles strength for 2400/s was found. Significant differences between involved and uninvolved shoulders during pain and disability tests were detected. There was no correlation between result of isokinetic and SPADI tests.
Conclusions. Patients after injury of rotator cuff present functional disorders that occur mainly during external rotation in isokinetic evaluation.
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- Clement ND, Nie YX, McBirnie JM. Management of degenerative rotator cuff tears: a review and treatment strategy. Sports Med Arthrosc Rehabil. Ther Technol. 2012;4:48.
- Robin MS, Andrew LW. Degenerative rotator cuff disease and impingement. Orthop Traum. 2011;25(1):1–10.
- Umer M, Qadir I, Azam M. Subacromial impingement syndrome. Orthop Rev. 2012;4(2): e18.
- Erol O, Ozcakar L, Celiker R. Shoulder rotator strength in patients with stage I–II subacromial impingement: Relationship to pain, disability, and quality of life. J Should Elb Surg. 2008;17(6):893–897.
- Tyler TF, Nahow RC, Nicholas SJ, McHugh MP. Quantifying shoulder rotation weakness in patients with shoulder impingeent. J Should Elb Surg. 2005;14:570–574.
- Dupuis C, Chollet CT, Leroy D, Blanquart FB. Influences the position of the scapula in isokinetic assessment: An example with high level athletes. Isokinet Exerc Sci. 2005;13:63–66.
- Edouard P, Codine P, Samozino P, Bernard PL, Hérisson C, Gremeaux V. Reliability of shoulder rotators isokinetic strength imbalance measured using the Biodex dynamometer. J Sci Med Sport. 2013;16(2):162–165.
- Wassinger CA, Sole G, Osborne H. The role of experimentally-induced subacromial pain on shoulder strength and throwing accuracy. Man Ther. 2012;17:411–415.
- Forthomme B, Croisier JL, Huskin JP, Crielaard JM. Isokinetic assessment of shoulders with impingement syndrome following pain inhibition. Isokinet Exerc Sci. 2003; 11:70–71.
- Mattiello-Rosa SM, Camargo PR, Santos AA, Pádua M, Reiff RB, Salvini TF. Abnormal isokinetic time-to-peak torque of the medial rotators of the shoulder in subjects with impingement syndrome. J Should Elb Surg. 2008; 17(1):54–60.
- Irlenbusch U, Gansen HK. Muscle biopsy investigations on neuromuscular insufficiency of the rotator cuff: a contribution to the functional impingement of the shoulder joint. J Should Elb Surg. 2003;12(5):422–426.
- Hill CL, Lester S, Taylor AW, Shanahan ME, Gill TK. Factor structure and validity of the shoulder pain and disabilty index in a population – based study of people with shoulder symptoms. BMC Musculoskel Disord. 2011;12:8.
- MacDermid JC, Solomon P, Prkachin K. The Shoulder Pain and Disability Index demonstrates factor, construct and longitudinal validity. BMC Musculoskel Disord. 2006;7:12.
- Ekeberg OM, Bautz-Holter E, Tveita EK, Keller A, Juel NG, Bronx JI. Agreement, reliability and validity in 3 shoulder questionnaires in patients with rotator cuff disease. BMC Musculoskel Disord. 2008;9:68.
- Staples MP, Forbes A, Green S, Buchbinder R. Shoulder-specific disability measures showed acceptable construct validity and responsiveness. J Clin Epidemiol. 2010; 63:163–170.