P127 - Hypermobile Lateral Meniscus: A Case Series Describing Diagnosis and Surgical Outcome
- A. Tagliero (Rochester, US)
- A. Tagliero (Rochester, US)
- S. Till (Rochester, US)
- M. Dancy (Rochester, US)
- A. Reinholz (Rochester, US)
- D. Saris (Rochester, US)
- B. Levy (Rochester, US)
- A. Krych (Rochester, US)
Abstract
Purpose
To report on the demographics, clinical presentation, radiographic features, & surgical outcomes for hypermobile lateral meniscus.
Methods and Materials
Historical & current Mayo Clinic records were queried via MedTagger & Advanced Text Explorer, self-service natural language processing & text-search tools. Results were restricted to records from Rochester MN sites, operated on and cared for between January 1st 2009 to August 19th 2019. Excel (2010; Microsoft Corp, Redmond, WA) preliminary data collection with statistical analyses completed in JMP (v14.1.0, SAS Institute, Cary, NC).
Results
Fourteen patients representing fifteen knees met inclusion criteria. The mean age was 23.9 ± 14.9 years. The majority of the cohort were current athletes (78.5%, 11/14) & had injured the left lateral meniscus (85.7%, 12/14); one patient had bilateral pathology. Only 1 case was correctly identified by radiology on initial MRI. Most repairs utilized all-inside methods (53.3%, 8/15). Average follow-up was 19.73 ± 19.4 months. At final follow-up 78.5% reported complete resolution of pain & mechanical symptoms. All cases with pain or mechanical symptoms at final follow up were secondary to trauma and new injury in the ipsilateral knee. Only 1 patient required revision surgery, while 3 underwent reoperation for new, traumatic pathology, and there were no recorded post-operative complications.
Conclusion
The hypermobile lateral meniscus continues to be a diagnostic dilemma as previously demonstrated in the literature. These patients may see multiple providers, have imaging studies incorrectly interpreted, and undergo various treatments prior to a successful diagnosis. There are identifiable trends in patient presentation which may lend to a timely, accurate diagnosis and to subsequent surgical intervention with favorable outcomes. This case series, for this rare clinical entity, demonstrates how operative treatment leads to a reliable resolution of mechanical symptoms and pain for patients with a hypermobile lateral meniscus.