Clinical Results at Six Months of Follow-up, of an Isolated Reconstruction of the Medial Patellofemoral Ligament in the Population of the Spanish Hospital of Mexico

Abstract

Background/ Aim: The patellofemoral instability is a common pathology in young patients. Rupture of medial patellofemoral ligament occurs in more than 90% of acute patellar dislocations and almost 100% of the recurrent ones. Isolated medial patellofemoral ligament reconstruction has better postoperative results in patients without significant anatomic abnormalities compared to combined procedures. The objective of this study is to evaluate the post-surgical functional result in a period minimum of 6 months after the isolated reconstruction of the medial patellofemoral ligament in the population of the Spanish Hospital of Mexico. Materials and Methods: An observational prospective cohort study was conducted. During the period between February 2017 to January 2022. 15 knees with patellar femoral instability with rupture of the of medial patellofemoral ligament were acquired, without additional anatomic risk factors. An isolated reconstruction of the medial patellofemoral ligament with allograft was performed. Clinical results were evaluated with a 6-month follow-up using functional scales (IKDC, Lysholm, Tegner, Kujala), as well as Visual Analogue Scale (VAS) for pain. All data were collected and analyzed using Microsoft Excel. Results: The median of the pre-surgical scores and at 6 months of follow-up were: IKDC from 37(30-56.3) to 77(74- 81, Tegner from 40(35-49) to 94(89-96), Kujala from 46 (37-66) to 75(70-82), EVA went from 6 to 2. Conclusion: The patients had an improvement in their functional scales greater than 30 points compared to their pre- surgical assessment. The isolated reconstruction of the medial patellofemoral ligament is a good alternative for the treatment of patellar dislocations, when they have the appropriate indication.