The large-scale data on isometric force buildup by rotator cuff muscles (supraspinatus, infraspinatus, and subscapularis) shows variations through the life span. The values are gender and age specific, i.e., maximal in the fifth live decade in men and in the fourth live decade in women.
A clear and significant resolution between the torque-time profiles in shoulders with intrinsic and extrinsic supraspinatus muscle pathology can be detected and distinguished from the values in the normal population.
Therefore, the measurements of the isometric force of the rotator cuff muscles might be utilized as a simple mechanical diagnostic method for identification of the abnormal patterns of muscle isometric strength in patients with different rotator cuff pathologies.
Isometric force Muscle Rotator cuff Shoulder
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Schezar A, Berkoviz Y, Haddad M, Soudry M, Rosenberg N. Normal isometric strength of rotator cuff muscles in adults. Bone Joint Res. 2013;2:214–9.CrossRefGoogle Scholar
Kuhlman JR, Iannoti JP, Kelly MJ, Riegler FX, Gevaert ML, Ergin TM. Isokinetic and isometric measurement of strength of external rotation and abduction of the shoulder. J Bone Joint Surg Am. 1992;74:1320–33.CrossRefPubMedGoogle Scholar
Hallynck TH, Soep HH, Thomis JA, Boelaert J, Daneels R, Dettli L. Should clearance be normalised to body surface or to lean body mass? Br J Clin Pharmacol. 1981 May;11(5):523–6.CrossRefPubMedPubMedCentralGoogle Scholar
Stoll T, Huber E, Seifert B, Stucki G, Michel BA. Isometric muscle strength measurement. Stuttgart: Thieme; 2002. p. 35–7.Google Scholar
Murray MP, Gore DR, Gardner GM, Mollinger LA. Shoulder motion and muscle strength of normal men and women in two age groups. Clin Orthop Relat Res. 1985;192:268–73.Google Scholar
Cofield RH. Subscapular muscle transposition for repair of chronic rotator cuff tears. Surg Gynec Obstet. 1982;154(5):667–72.PubMedGoogle Scholar
Berkovitch Y, Haddad M, Keren Y, Soudry M, Rosenberg N. The diagnostic value of the shoulder rotator cuff muscles’ isometric force testing. Open J Clin Diagn. 2013;3:142–7.CrossRefGoogle Scholar
Bandholm T, Rasmussen L, Aagaard P, Jensen BR, Diederichsen L. Force steadiness, muscle activity, and maximal muscle strength in subjects with subacromial impingement syndrome. Muscle Nerve. 2006;34(5):631–9.CrossRefPubMedGoogle Scholar
Bankes MJ, Crossman JE, Emery RJH. A standard method of shoulder strength measurement for the constant score with a spring balance. J Shoulder Elb Surg. 1998;7:116–21.CrossRefGoogle Scholar