Coronal plane malalignment may not affect outcomes after meniscus repair
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Key takeaways:
- Patients at risk for failure after meniscus repair for meniscal root tear had a greater absolute mean mechanical axis.
- Patients at risk and not at risk for failure had no statistical differences in KOOS scores.
LAS VEGAS — Results presented here showed patient-reported outcomes may not be affected by coronal plane malalignment in patients undergoing meniscus repair for meniscal root tears.
“Ultimately, looking at our results, there’s a suggestion that there may be no statistically significant difference between these outcomes based on the coronal plane malalignment and, thus, those in this grey zone of 5° to 10° may not benefit or may not be indicated for a corrective procedure at this time,” Parker A. Cavendish, MD, said in his presentation at the American Academy of Orthopaedic Surgeons Annual Meeting.
Cavendish and colleagues collected patient demographic and surgical data among 62 patients with adequate full-length weight-bearing radiographs who underwent meniscus repair for a meniscal root tear between 2006 and 2018. Researchers contacted patients to collect KOOS and International Knee Documentation Committee subjective scores. Researchers categorized patients into groups based on whether they were at risk for failure, where the at-risk group included patients with either 3° of varus alignment and a medial root repair or 3° of valgus alignment and a lateral root repair.
Among the 20 patients who met inclusion criteria, researchers found 45% of patients were considered at risk with varus-aligned knees with medial root tears. Compared with patients not at-risk for failure, results showed patients at-risk for failure had a greater absolute mean mechanical axis.
“The KOOS scores and all their subscales had no statistically significant difference between the two groups,” Cavendish said. “However, if you scrutinize those in the not at-risk group, we do see there appears to be an increase or a trend toward improved patient-reported outcomes and the same is true with the IKDC scores.”
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Cavendish P, et al. Paper 302. Presented at: American Academy of Orthopaedic Surgeons Annual Meeting; March 7-11, 2023; Las Vegas.
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