O'Donohue's Unhappy Triad

Discuss the medical implications and realities of close quarters combat as it relates to human anatomy and physiology.

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O'Donohue's Unhappy Triad

Postby San Soo Sifu » Sat Mar 08, 2014 4:45 am

Ron Bilow, M.D. wrote:There is a common pattern of ligament tear in the knee called O'Donohue's Unhappy Triad. The combined injuries include: 1) tear of the ACL (anterior cruciate ligament); 2) tear of the medial meniscus. and; 3) tear of the medial collateral ligament. This injury pattern is due to a force directed through the knee from an oblique angle beginning anterolaterally and coursing posteromedially. Let me try to explain this applied force in lay terms, for those not medically oriented. Imagine you're standing in a right half horse stance, with your feet about shoulders width apart from left to right. Your opponent is standing in front of you to your right, maybe 45 degrees off your power line. Your horse is weakened by your laziness, such that your knee is not bent enough. Your opponent, seeing this, throws a powerful side kick through your right knee - his/her force directed towards your left foot.

As you lay on the ground holding your knee in excruciating pain, remembering how you should have bent your front knee more, you can take comfort in the fact that you can now diagnose your own injury. HA! Who needs an MRI?

So what are these structures in the knee that have just been torn, and what the heck do they do? Let me keep this really simple, because there is too much to cover...

The ACL is a thin ligament that runs from the femur to the tiba in the middle part of the knee joint. It keeps your leg (that anatomy between the knee and ankle) from going too far forward when your knee is extended (straightened).

The medial meniscus is like a teflon shock absorber, designed to protect the bone when you bear weight (stand) and also helps guide the inner part of the knee in the right path when you flex and extend your knee (bend and straighten).

The medial collateral ligament is a broad sheet of fibrous tissue that provides stability to the knee and keeps things from slipping medially (towards the other leg).

Okay, remember to keep your knee bent!
Hit First...Hit Hard...Hit Often...and Finish Him Off!
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