Abstract
Purpose
Snapping annular ligament is an uncommon cause of lateral elbow pain. The purpose of this case series was to evaluate the clinical presentation and surgical outcomes for snapping annular ligament.
Methods
Included were 23 patients with snapping annular ligament who received surgical treatment between 2007 and 2016. There were two treatment groups with either resection (arthroscopic or open procedure, n = 15) or open annular ligament reconstruction (n = 8). Patients were assessed with the Mayo Elbow Performance Index and the Oxford Elbow Score. Preoperative and postoperative scores were compared with a paired t test.
Results
Pain was located laterally in nine patients (39.1%), anteriorly in three patients (13.0%), anterolaterally in two patients (8.7%), and diffusely in nine patients (39.1%). In total, 16 patients (69.6%) experienced a snapping sensation and ten patients (43.5%) locking of the elbow. According to the patients’ reported outcomes, their symptoms improved significantly after both procedures.
Conclusions
This is the largest case series in the literature on snapping annular ligament, an uncommon cause of lateral elbow pain. Good treatment results are expected with resection of the interpositioned part of the annular ligament or annular ligament reconstruction.
Level of evidence
IV.
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Abbreviations
- WMO:
-
Medical research involving human subjects act
- MEPI:
-
Mayo Elbow Performance Index
- OES:
-
Oxford Elbow Score
- PRU:
-
Proximal radiohumeral joint
- ALR:
-
Annular ligament reconstruction
- RAL:
-
Resection of the annular ligament
- 95% CI:
-
95% confidence interval
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Acknowledgements
The Oxford and Isis Outcomes, part of Isis Innovation Limited, gave permission to use the Oxford Elbow Score, and we thank them for their kind support. We would especially like to thank A.J. de Vries for her contributions in reviewing this article.
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NK did the data acquisition, analysis and drafting of the manuscript. AB participated in the design and coordination of the study and helped draft the manuscript. CG and DE revised the manuscript, selected potential suitable patients for the study and also participated in the coordination of the study. All authors have read and approved the final manuscript.
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The authors declare that they have no competing interests (see signed forms in attachment).
Ethical committee approval
The regional Medical Ethical Committee evaluated the protocol for this study. The Medical Research Involving Human Subjects Act (WMO) did not apply. This study is registered under No. RTPO 986a with the Institutional Review Board Regionale Toetsingscommissie Patiëntgebonden Onderzoek (RTPO), Zorgpartners Friesland.
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Kerver, N., Boeddha, A.V., Gerritsma-Bleeker, C.L.E. et al. Snapping of the annular ligament: a uncommon injury characterised by snapping or locking of the elbow with good surgical outcomes. Knee Surg Sports Traumatol Arthrosc 27, 326–333 (2019). https://doi.org/10.1007/s00167-018-5076-2
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DOI: https://doi.org/10.1007/s00167-018-5076-2