Meniscus Root Injury

The rehab process for these injuries after surgical repair is similar to a traditional meniscus repair, but the clinical assessment before surgery is very deceptive.These injuries are not easily diagnosed by traditional knee exams.

LMPR = lateralmeniscus posterior root insertion;
MMPR = medial meniscus posterior root insertion.

Clinical Eval: MMPR injuries are not necessarily associated with a traumatic event. Approximately 70% of patients report a routine event (such as squatting), while others do not report any specific event. The most common symptoms of posterior meniscal root tears are posterior knee pain and pain in the articular line,which are nonspecific. Mechanical symptoms, such as blocking, are less common.

Joint effusion is observed in only 14.3%of the cases.
McMurray test is positive in only 57.1% of patients.

Lesson: Seil et al.described a test to detect MMPR lesions based on meniscal extrusion. The maneuver consists in applying a stress in varus, with the knee in full extension, while palpating the anteromedial joint line. It is considered positive when the meniscus extrusion can be palpated and disappears when the knee is brought back into normal alignment.

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