Menisco externo hipermóvil y bloqueo articular por desinserción meniscal

Abstract

Introduction: subluxation of a healthy lateral meniscus, due to posterior meniscal capsular disinsertion, is an uncommon cause of pain and locking knee. Literature reported so far is scarce. Materials and methods: we present a case series of twelve patients, in which the diagnosis was made by clinical presentation and physical examination: locking knee episodes and recurrent pain. In all cases, the MRI did not show any abnormalities. Meniscal fixation was made in all patients, using a combination of all-inside and vertical outside-in sutures, achieving a stable meniscus.

Results: one year after surgery, patients were given an appointment to perform a physical examination, complete the Lysholm score and Tegner activity scale. Average follow-up was four years and two months (range 2 to 7 years). One year after surgery, all patients reported remission of symptoms without complications. Average of the Lysholm score was 97.5 points (min. 90 – max. 100) and Tegner activity scale for sports reintegration was 7.6 (min. 7 – max. 9).

Conclusion: posterior capsular meniscal disinsertion of the lateral meniscus should be suspected in patients with a history of locking knee (meniscal), with MRI reported as normal or without quantified meniscal injury, and who do not respond to medical treatment. Given the high suspicion of this pathology and as observed in our series, in the short term, their repair shows excellent results.