Original Research

Impact of Sagittal Rotation on Axial Glenoid Width Measurement in the Setting of Glenoid Bone Loss

Publish date: June 5, 2018

References

1. Cerciello S, Edwards TB, Walch G. Chronic anterior glenohumeral instability in soccer players: results for a series of 28 shoulders treated with the Latarjet procedure. J Orthop Traumatol. 2012;13(4):197-202. doi:10.1007/s10195-012-0201-3.

2. Itoi E, Lee SB, Berglund LJ, Berge LL, An KN. The effect of a glenoid defect on anteroinferior stability of the shoulder after Bankart repair: a cadaveric study. J Bone Joint Surg Am. 2000;82(1):35-46.

3. Bhatia S, Ghodadra NS, Romeo AA, et al. The importance of the recognition and treatment of glenoid bone loss in an athletic population. Sports Health. 2011;3(5):435-440. doi:10.1177/1941738111414126.

4. Lo IK, Parten PM, Burkhart SS. The inverted pear glenoid: an indicator of significant glenoid bone loss. Arthroscopy. 2004;20(2):169-174. doi:10.1016/j.arthro.2003.11.036.

5. Mologne TS, Provencher MT, Menzel KA, Vachon TA, Dewing CB. Arthroscopic stabilization in patients with an inverted pear glenoid: results in patients with bone loss of the anterior glenoid. Am J Sports Med. 2007;35(8):1276-1283. doi:10.1177/0363546507300262.

6. Piasecki DP, Verma NN, Romeo AA, Levine WN, Bach BR Jr, Provencher MT. Glenoid bone deficiency in recurrent anterior shoulder instability: diagnosis and management. J Am Acad Orthop Surg. 2009;17(8):482-493.

7. Provencher MT, Bhatia S, Ghodadra NS, et al. Recurrent shoulder instability: current concepts for evaluation and management of glenoid bone loss. J Bone Joint Surg Am. 2010;92(suppl 2):133-151. doi:10.2106/JBJS.J.00906.

8. Rowe CR, Zarins B, Ciullo JV. Recurrent anterior dislocation of the shoulder after surgical repair. Apparent causes of failure and treatment. J Bone Joint Surg Am. 1984;66(2):159-168.

9. Sugaya H, Moriishi J, Dohi M, Kon Y, Tsuchiya A. Glenoid rim morphology in recurrent anterior glenohumeral instability. J Bone Joint Surg Am. 2003;85-A(5):878-884.

10. Edwards TB, Boulahia A, Walch G. Radiographic analysis of bone defects in chronic anterior shoulder instability. Arthroscopy. 2003;19(7):732-739.

11. Jankauskas L, Rudiger HA, Pfirrmann CW, Jost B, Gerber C. Loss of the sclerotic line of the glenoid on anteroposterior radiographs of the shoulder: a diagnostic sign for an osseous defect of the anterior glenoid rim. J Shoulder Elbow Surg. 2010;19(1):151-156. doi:10.1016/j.jse.2009.04.013.

12. Altan E, Ozbaydar MU, Tonbul M, Yalcin L. Comparison of two different measurement methods to determine glenoid bone defects: area or width? J Shoulder Elbow Surg. 2014;23(8):1215-1222. doi:10.1016/j.jse.2013.11.029.

13. Bishop JY, Jones GL, Rerko MA, Donaldson C, Group MS. 3-D CT is the most reliable imaging modality when quantifying glenoid bone loss. Clin Orthop Relat Res. 2013;471(4):1251-1256. doi:10.1007/s11999-012-2607-x.

14. Chuang TY, Adams CR, Burkhart SS. Use of preoperative three-dimensional computed tomography to quantify glenoid bone loss in shoulder instability. Arthroscopy. 2008; 24(4):376-382. doi:10.1016/j.arthro.2007.10.008.

15. Gross DJ, Golijanin P, Dumont GD, et al. The effect of sagittal rotation of the glenoid on axial glenoid width and glenoid version in computed tomography scan imaging. J Shoulder Elbow Surg. 2016;25(1):61-68. doi:10.1016/j.jse.2015.06.017.

16. Lenart BA, Freedman R, Van Thiel GS, et al. Magnetic resonance imaging evaluation of normal glenoid length and width: an anatomic study. Arthroscopy. 2014;30(8):915-920. doi:10.1016/j.arthro.2014.03.006.

17. Bois AJ, Fening SD, Polster J, Jones MH, Miniaci A. Quantifying glenoid bone loss in anterior shoulder instability: reliability and accuracy of 2-dimensional and 3-dimensional computed tomography measurement techniques. Am J Sports Med. 2012;40(11):2569-2577. doi:10.1177/0363546512458247.

18. Griffith JF, Antonio GE, Tong CW, Ming CK. Anterior shoulder dislocation: quantification of glenoid bone loss with CT. AJR Am J Roentgenol. 2003;180(5):1423-1430. doi:10.2214/ajr.180.5.1801423.

19. Hoenecke HR Jr, Hermida JC, Flores-Hernandez C, D'Lima DD. Accuracy of CT-based measurements of glenoid version for total shoulder arthroplasty. J Shoulder Elbow Surg. 2010;19(2):166-171. doi:10.1016/j.jse.2009.08.009.

20. Huijsmans PE, de Witte PB, de Villiers RV, et al. Recurrent anterior shoulder instability: accuracy of estimations of glenoid bone loss with computed tomography is insufficient for therapeutic decision-making. Skeletal Radiol. 2011;40(10):1329-1334. doi:10.1007/s00256-011-1184-5.

21. Bhatia S, Frank RM, Ghodadra NS, et al. The outcomes and surgical techniques of the latarjet procedure. Arthroscopy. 2014;30(2):227-235. doi:10.1016/j.arthro.2013.10.013.

22. Cunningham G, Benchouk S, Kherad O, Ladermann A. Comparison of arthroscopic and open Latarjet with a learning curve analysis. Knee Surg Sports Traumatol Arthrosc. 2015;24(2):540-545. doi:10.1007/s00167-015-3910-3.

23. Fedorka CJ, Mulcahey MK. Recurrent anterior shoulder instability: a review of the Latarjet procedure and its postoperative rehabilitation. Phys Sportsmed. 2015;43(1):73-79. doi:10.1080/00913847.2015.1005543.

24. Flinkkila T, Sirniö K. Open Latarjet procedure for failed arthroscopic Bankart repair. Orthop Traumatol Surg Res. 2015;101(1):35-38. doi:10.1016/j.otsr.2014.11.005.

25. Hovelius L, Sandström B, Saebö M. One hundred eighteen Bristow-Latarjet repairs for recurrent anterior dislocation of the shoulder prospectively followed for fifteen years: study II-the evolution of dislocation arthropathy. J Shoulder Elbow Surg. 2006;15(3):279-289. doi:10.1016/j.jse.2005.09.014.

26. Hovelius L, Sandström B, Sundgren K, Saebö M. One hundred eighteen Bristow-Latarjet repairs for recurrent anterior dislocation of the shoulder prospectively followed for fifteen years: study I--clinical results. J Shoulder Elbow Surg. 2004;13(5):509-516. doi:10.1016/S1058274604000916.

27. Hovelius L, Vikerfors O, Olofsson A, Svensson O, Rahme H. Bristow-Latarjet and Bankart: a comparative study of shoulder stabilization in 185 shoulders during a seventeen-year follow-up. J Shoulder Elbow Surg. 2011;20(7):1095-1101. doi:10.1016/j.jse.2011.02.005.

28. Gupta A, Delaney R, Petkin K, Lafosse L. Complications of the Latarjet procedure. Curr Rev Musculoskelet Med. 2015;8(1):59-66. doi:10.1007/s12178-015-9258-y.

29. Kwon YW, Powell KA, Yum JK, Brems JJ, Iannotti JP. Use of three-dimensional computed tomography for the analysis of the glenoid anatomy. J Shoulder Elbow Surg. 2005;14(1):85-90. doi:10.1016/j.jse.2004.04.011.

30. Saito H, Itoi E, Sugaya H, Minagawa H, Yamamoto N, Tuoheti Y. Location of the glenoid defect in shoulders with recurrent anterior dislocation. Am J Sports Med. 2005;33(6):889-893. doi:10.1177/0363546504271521.

IMAGE ANALYSIS AND REFORMATTING

In a de-identified fashion, all CT scans were imported and analyzed using open-source Digital Imaging and Communications in Medicine (DICOM) software (OsiriX MD, version 2.5.1 64-bit). By following a previously developed method, CT scans were reformatted using OsiriX MPR. The OsiriX software has an MPR function that allows simultaneous manipulation of 2-D CT scans in 3 orthogonal planes: axial, sagittal, and coronal. In the MPR mode, the alternation of 1 plane directly affects the orientation of the remaining 2 planes. Thus, by using an MPR, one can analyze the impact that a default CT scan performed relative to the gantry of the table, UNCORR, has on the axial images.

First, the en face view was obtained via a 2-step process: alignment of the axial plane to account for the scapular angle, followed by alignment of the coronal plane to adjust for the glenoid inclination.¹⁵ These 2 adjustments provided a true en face sagittal glenoid view. The final adjustment step was a sagittal en face rotation of the glenoid such that the superior and inferior glenoid tubercles were placed on the 12-o’clock to 6-o’clock axis (CORR scan). Previous studies have identified a central longitudinal axis that was used in this method to align the supraglenoid tubercle with the 12-o’clock to 6-o’clock axis on the glenoid face.^15,17,18 The standard error of mean was 1.21^°. This new CORR view resulted in axial cuts through the glenoid that were oriented perpendicular to the 12-o’clock to 6-o’clock axis. The UNCORR and CORR images were assessed in the axial plane at 5 standardized cuts and measured for AP glenoid width by 2 independent observers in a blinded, randomized fashion. When the measured AP width of the UNCORR scan was less than that measured on the CORR scan, the AP width of the glenoid was considered underestimated, and the degree of GBL was considered overestimated (Figure 2).

SCAPULAR ANGLE

Scapular angle measurements were performed on the axial view as the angle between a line through the long axis of the body of the scapula, and a line parallel to the CT gantry table.^15,19 Subsequently, the axial plane was aligned to the glenoid surface.

CORONAL INCLINATION

Coronal inclination measurements were performed on the sagittal view as the angle between a line tangential to the face of the glenoid and a line perpendicular to the CT gantry table. Positive values represented superior inclination, while negative values represented inferior glenoid inclination.¹⁵

SAGITTAL ROTATION

Sagittal rotation measurements were performed using the built-in angle measurement tool in OsiriX in the sagittal plane since the degree of rotation required aligning the long axis of the glenoid to the 12-o’clock to 6-o’clock axis. The amount of rotation was defined as the rotation angle.¹⁵

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