Galasso O, Tarducci L, De Benedetto M, Orlando N, Mercurio M, Gasparini G, Castricini R. Modified
Weaver-Dunn Procedure for Type 3 Acromioclavicular Joint Dislocation: Functional and Radiological Outcomes.
Orthop J Sports Med 2020;
8:2325967120905022. [PMID:
32215276 PMCID:
PMC7065288 DOI:
10.1177/2325967120905022]
[Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 11/19/2019] [Indexed: 11/16/2022] Open
Abstract
Background
Controversy surrounds the indication for treatment of type 3 acromioclavicular joint dislocation, and the optimal reconstructive technique has not yet been defined. Since the first description of the Weaver-Dunn procedure, several studies have described the clinical and radiological results that can be expected postoperatively; however, few studies have evaluated the outcomes of this technique for chronic type 3 acromioclavicular joint dislocation.
Purpose/Hypothesis
The purpose of this study was to evaluate the functional and radiographic mid- to long-term outcomes of a modified Weaver-Dunn procedure for chronic Rockwood type 3 acromioclavicular joint dislocation. We hypothesized that (1) functional outcomes comparable with sex- and age-matched healthy individuals could be achieved with the modified Weaver-Dunn procedure and (2) joint stability could be restored after surgery.
Study Design
Case series; Level of evidence, 4.
Methods
Out of 30 patients who sustained a chronic type 3 acromioclavicular joint dislocation, 27 had a minimum 12-month follow-up and were included in the study. All patients underwent a modified Weaver-Dunn procedure. The Constant-Murley score was used to assess patient postoperative function. Subjective evaluation of patient satisfaction with surgery was also recorded. Radiological assessment was performed postoperatively to evaluate superoinferior and anteroposterior joint stability.
Results
After a mean follow-up period of 51.6 months, the mean Constant-Murley score was 90.1, which was 97.2% that of a group of sex- and age-matched healthy individuals. In the multivariate analysis, higher Constant-Murley score was associated with male sex (β = 0.385; P = .043) and higher subjective satisfaction scale (β = 0.528; P = .003). All patients returned to their previous work and sport activity levels having high satisfaction with surgery. Successful vertical acromioclavicular joint reduction was obtained in all but 1 patient; however, horizontal joint stability was not completely restored with the modified Weaver-Dunn procedure. No intraoperative complications occurred, and the postoperative complication rate was 7.4%.
Conclusion
In patients with chronic type 3 acromioclavicular joint dislocation, the modified Weaver-Dunn procedure is an effective technique to restore vertical but not horizontal joint stability 4 years after surgery. High levels of satisfaction with surgery and functional outcomes comparable with sex- and age-matched healthy individuals can be achieved.
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