Featured on Channel NewsAsia

Posterior Medial Corner Injuries


The symptoms are acute posterior and medial knee pain and haemarthrosis, which is caused by bleeding from the ruptured posterior medial capsule. Since the capsule ruptures, the extent of bleeding is often underestimated. This injury is fairly uncommon but occurs in contact sports such as football, rugby and others.


The typical athlete suffers a hyperextension and valgus rotation sprain. The capsule can rupture partially or completely. This injury is often associated with other injuries to the medial meniscus, cartilage or other ligaments, in particular the medial collateral ligament.


There is haemarthrosis in most cases. The capsule rupture will make blood penetrate from the joint and cause bruising. With the foot in internal rotation the posterior drawer test shows increased laxity if the rupture is complete but this injury is often missed clinically and found only during arthroscopy or MRI. Since there are often associated injuries, examination must also include tests for other ligaments, menisci and cartilage.


Clinical examination is the most important tool for diagnosis and should include tests for all ligaments and other structures in the knee. MRI can verify a capsule tear in most cases but this injury is often noted first on arthroscopy.


An athlete with haemarthrosis and suspected posterior medial capsule tear should be seen by an orthopaedic surgeon to consider arthroscopy. This procedure can verify the diagnosis and deal with associated injuries that are often missed. This injury may require early open or arthroscopic surgery or bracing over six to twelve weeks.


Refer to Dr Kevin Yip (+65 6664 8135) senior consultant orthopaedic surgeon for further investigations to verify the extent of the injury. Physiotherapists will be involved in close collaboration with the surgeon.


Cycling and swimming (but not breaststroke) are good alternatives to keep up general fitness. Rehabilitation back to full sport usually takes around six months.


Monitor clinical symptoms and signs. Different functional knee scores for different sports are available to measure when the knee allows a return to full sport.


PCL rupture.


There is very little data regarding the outcome of this particular injury.

Leave a Reply

You can use these HTML tags

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>




This site uses Akismet to reduce spam. Learn how your comment data is processed.