Reparación del ligamento patelofemoral medial en pacientes pediátricos con luxación patelofemoral

Abstract

Background: The repair of LPFM offers an effective method to restore patellar stability after a patellar dislocation; The purpose of this study was to evaluate the results of LPFM repair.
Methods: A clinical trial was conducted with 5 LPFM repairs in pediatric patients due to traumatic patellar instability, with an average follow-up of 6 months. Age, sex, groove angle and distance TAT-ST, final range of motion and complications data were considered in this study.

Results: Five LPFM repairs were performed in a period from May to December 2018. Three patients had a groove angle of 134 and two of 133. For the TAT-ST distance, three patients had a distance of 2.0 cm and two patients had a distance of 1.8 cm. The range of motion were assessed 1 month after the first rehabilitation. It was observed that 80% of patients (four patients) presented 80 degrees of flexion, and 20% 60 degrees. At the third month, 60% of patients (three patients) presented 110 degrees of flexion and 40% (2 patients) of 100 degrees. Finally, at 6 months, 60% (three patients) presented 130 degrees and 40% (2 patients)) 120 degrees.

Conclusions: The repair of LPFM produced a low risk of recurrent instability with results comparable to reconstruction. There are multiple anatomical and biomechanical considerations that should be taken for doing an isolated reconstruction of LPFM for patellofemoral instability.