Abstract
Object
To design and evaluate the strength of muscles in preventing humeral head migration after acromioplasty by biomechanical research on cadaver models.
Methods
Six fresh shoulder cadavers were studied. The coracoacromial ligament cut model was prepared in five shoulders for the study. Different forces were applied to the head of humerus with designed strengthened force on rotator cuff muscles. The results were calculated with SPSS software.
Results
The anterior and superior pulling force caused obvious migration of humeral head in coracoacromial ligament cut model; after strengthening the rotator cuff muscles, especially the supraspinatus and subscapular muscle, the humeral head migration was reduced.
Conclusion
Modified acromioplasty with supraspinatus and subscapular muscle, strengthened in our experiment, helped to control the migration of humeral head.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Faber E, Kuiper JI, Burdof A et al (2006) Treatment of impingement syndrome: a systematic review of the effects on functional limitations and return to work. J Occup Rehabil 16(1):7–25
Neer CS II (1972) Anterior acromioplasty for the chronic impingement syndrome in the shoulder: a preliminary report. J Bone Joint Surg Am 54:41–50
Ellman H (1987) Arthroscopic subacromial decompression: analysis of one to three year results. Arthroscopy 3:173–181
Torrens C, Lopez JM et al (2000) Open anterior acromioplasty with preservation of the coracoacromial ligament: a modified surgical technique. J Shoulder Elbow Surg 9(6):491–494
Fagelman M, Sartori M, Freedman KB et al (2007) Biomechanics of coracoacromial arch modification. J Shoulder Elbow Surg 16(1):101–106
Fenlin JM Jr, Chase JM, Rushton SA et al (2002) Tuberoplasty: creation of an acromiohumeral articulation-a treatment option for massive, irreparable rotator cuff tears. J Shoulder Elbow Surg 11(2):136–142
Patrick JM, Thay QL (2002) Muscles may contribute to shoulder dislocation and stability. Clin Orthop Relat Res 403S:18–25
Louis JS, Charlene HA (1994) Geometric and mechanical properties of the coracoacromial ligament and their relationship to rotator cuff disease. Clin Orthop Relat Res 304:10–17
Burke WS, Vangsness CT, Powers CM (2002) Strengthening the supraspinatus: a clinical and biomechanical review. Clin Orthop Relat Res 402:292–298
Sarkar K, Taine W, Uhthoff HK (1990) The ultrastructure of the coracoacromial ligament in patients with chronic impingement syndrome. Clin Orthop Relat Res 254:49–54
Malanga GA, Jenp YN, Growney ES, An KN (1996) EMG analysis of shoulder positioning in testing and strengthening the supraspinatus. Med Sci Sports Exerc 28:661–664
Norkin C, Levangie PK (1992) The shoulder complex. In: Norkin C, Levangie PK (eds) Joint structure and function: a comprehensive analysis. 2nd edn. FA Davis, Philadelphia, pp 222–228
Volk AG, Vangsness CT Jr (2001) An anatomic study of the supraspinatus muscle and tendon. Clin Orthop Relat Res 384:280–285
Author information
Authors and Affiliations
Corresponding author
Additional information
An erratum to this article can be found at http://dx.doi.org/10.1007/s00402-008-0738-z
Rights and permissions
About this article
Cite this article
Chen, J., Luo, CF. & Luo, ZP. Initiatory biomechanical study on humeral head migration after coracoacromial ligament cut. Arch Orthop Trauma Surg 129, 133–137 (2009). https://doi.org/10.1007/s00402-008-0580-3
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00402-008-0580-3