Advanced SearchSearch Tips
Correlation between Subscapularis Tears and the Outcomes of Physical Tests and Isokinetic Muscle Strength Tests
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
  • Journal title : Clinics in Shoulder and Elbow
  • Volume 19, Issue 2,  2016, pp.90-95
  • Publisher : Korean Shoulder and Elbow Society
  • DOI : 10.5397/cise.2016.19.2.90
 Title & Authors
Correlation between Subscapularis Tears and the Outcomes of Physical Tests and Isokinetic Muscle Strength Tests
Jang, Ho-Su; Kong, Doo-Hwan; Jang, Suk-Hwan;
  PDF(new window)
Background: The aim of this study was to investigate the correlation between the type of subscapularis tendon tears diagnosed during arthroscopy and the outcomes of physical tests and of isokinetic muscle strength tests. Methods: We preoperatively evaluated physical outcomes and isokinetic muscle strength of 60 consecutive patients who underwent an arthroscopic rotator cuff repair and/or subacromial decompression. We divided the patients into five groups according to the type of subscapularis tear, which we classified using Lafosse classification system during diagnostic arthroscopic surgery. Results: When we performed a trend analysis between the outcomes of the physical tests and the severity of subscapularis tendon tear, we found that both the incidence of positive sign of the collective physical tests and that of individual physical tests increased significantly as the severity of the subscapularis tear increased (p<0.001). Similarly, the deficit in isokinetic muscle strength showed a tendency to increase as the severity of subscapularis tear increased, but this positive correlation was statistically significant in only the deficit between those with Lafosse type II tears and those with Lafosse type III tears. Conclusions: Although no single diagnostic test surpasses above others in predicting the severity of a subscapularis tear, our study implies that, as a collective unit of tests, the total incidence of the positive rate of the physical tests and the extent of isokinetic strength deficit may correlate with severity of subscapularis tears.
Shoulder;Rotator cuff;Arthroscopy;Physical examination;Muscle strength;
 Cited by
Cho NS, Lee SH. Impingement syndrome & rotator cuff tear: etiology. J Korean Arthrosc Soc. 2012;16(1):72-8.

Shon MS, Koh KH, Lee SS, Yoo JC. MR evaluation of tendinous portions in the subscapularis muscle. Clin Should Elbow. 2011;14(1):35-45. crossref(new window)

Barth JR, Burkhart SS, De Beer JF. The bear-hug test: a new and sensitive test for diagnosing a subscapularis tear. Arthroscopy. 2006;22(10):1076-84. crossref(new window)

Bartsch M, Greiner S, Haas NP, Scheibel M. Diagnostic values of clinical tests for subscapularis lesions. Knee Surg Sports Traumatol Arthrosc. 2010;18(12):1712-7. crossref(new window)

Keating JF, Waterworth P, Shaw-Dunn J, Crossan J. The relative strengths of the rotator cuff muscles. A cadaver study. J Bone Joint Surg Br. 1993;75(1):137-40.

Lafosse L, Jost B, Reiland Y, Audebert S, Toussaint B, Gobezie R. Structural integrity and clinical outcomes after arthroscopic repair of isolated subscapularis tears. J Bone Joint Surg Am. 2007;89(6):1184-93. crossref(new window)

Gerber C, Hersche O, Farron A. Isolated rupture of the subscapularis tendon. J Bone Joint Surg Am. 1996;78(7):1015-23. crossref(new window)

Adams CR, Schoolfield JD, Burkhart SS. Accuracy of preoperative magnetic resonance imaging in predicting a subscapularis tendon tear based on arthroscopy. Arthroscopy. 2010;26(11):1427-33. crossref(new window)

Gerber C, Krushell RJ. Isolated rupture of the tendon of the subscapularis muscle. Clinical features in 16 cases. J Bone Joint Surg Br. 1991;73(3):389-94.

Tung GA, Yoo DC, Levine SM, Brody JM, Green A. Subscapularis tendon tear: primary and associated signs on MRI. J Comput Assist Tomogr. 2001;25(3):417-24. crossref(new window)

Adams CR, Brady PC, Koo SS, et al. A systematic approach for diagnosing subscapularis tendon tears with preoperative magnetic resonance imaging scans. Arthroscopy. 2012;28(11):1592-600. crossref(new window)

Ticker JB, Burkhart SS. Why repair the subscapularis? A logical rationale. Arthroscopy. 2011;27(8):1123-8. crossref(new window)

Kim DW, Sung JH, Jung JE, Ko MS. Correlation between Korean Shoulder Scoring System and Isokinetic muscle strength test. J Korean Orthop Soc Sports Med. 2010;9(2):104-8.

Kim DW, Joo HK, Jung JE. Comparison of isokinetic strength between stage 1,2 impingement syndrome and rotator cuff tear. J Korean Shoulder Elbow Soc. 2010;13(1):53-7. crossref(new window)

Kim JO, Shim SD, Jeong MS, Chang JH, Park C. Can preoperative isometric and Isokinetic strength predict the size of the full-thickness rotator cuff tears? Korean J Sports Med. 2009;27(1):89-94.

Lafosse L, Lanz U, Saintmard B, Campens C. Arthroscopic repair of subscapularis tear: Surgical technique and results. Orthop Traumatol Surg Res. 2010;96(8 Suppl):S99-108. crossref(new window)

Ko SH, Lee CC, Kim SW, Shin SM, Cho BK. Arthroscopic UU-tension band suture for rotator cuff tear above 4 cm: comparative study with simple suture. Clin Should Elbow. 2012;15(2):99-108. crossref(new window)

Yoo JC, Rhee YG, Shin SJ, et al. Subscapularis tendon tear classification based on 3-dimensional anatomic footprint: a cadaveric and prospective clinical observational study. Arthroscopy. 2015;31(1):19-28. crossref(new window)

Park YB, Park YE, Koh KH, Lim TK, Shon MS, Yoo JC. Subscapularis tendon repair using suture bridge technique. Arthrosc Tech. 2015;4:e133-7. crossref(new window)

Burkhart SS, Tehrany AM. Arthroscopic subscapularis tendon repair: technique and preliminary results. Arthroscopy. 2002;18(5):454-63. crossref(new window)