Study: Deepening trochleoplasty, MPFL reconstruction may improve trochlear dysplasia
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Key takeaways:
- Deepening trochleoplasty with medial patellofemoral ligament reconstruction yielded clinical improvements.
- Researchers found significant changes in the MRI measurements used to evaluate trochlear dysplasia.
Arthroscopic deepening trochleoplasty combined with medial patellofemoral ligament reconstruction may result in improved MRI measurements that characterize trochlear dysplasia.
In the retrospective cohort study, researchers analyzed 15 patients (16 knees) with patellar instability and severe trochlear dysplasia (TD) who underwent MPFL reconstruction with arthroscopic deepening trochleoplasty (ADT). They assessed preoperative and postoperative MRIs for lateral trochlear inclination (LTI) angle, trochlear depth, trochlear height, trochlear facet asymmetry and cartilage thickness.
At mean follow-up of 63.6 months, median LTI angle improved from 1.25° to 10.7°; trochlear depth increased from 0 mm to 3.23; trochlear facet asymmetry improved from 4.55% to 17.8%; and cartilage thickness was unchanged. Researchers noted improved patient-reported outcome scores for all patients.
“The findings from this study indicate that ADT surgery was capable of changing the trochlear groove configuration in a positive direction, to such a degree that statistically significant changes in MRI measurements used to evaluate TD could be observed,” the researchers wrote in the study. “Patients can expect to achieve statistically significant and clinically relevant improvement.”
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