08/11/2026
This is Tommy John surgery waiting to happen. Please don't try this. 🚨
What you're seeing is sometimes called a "Kimura press," loading weight while your shoulder and elbow are held in extreme external rotation, the same joint position used in the kimura submission in Brazilian Jiu-Jitsu.
Here's why that position is so dangerous under load: putting your shoulder into extreme external rotation combined with pressing force places enormous rotational stress on the joint capsule and rotator cuff, particularly the infraspinatus and supraspinatus. At the elbow, that same rotational torque directly stresses the ulnar collateral ligament, the exact ligament that fails in classic UCL tears seen in overhead throwing athletes.
But the scariest part is what can happen to the bone itself. When a joint is locked into extreme rotation and then loaded further, the humerus can actually fail before the ligaments do, resulting in a spiral fracture, a serious, often surgical injury caused by rotational force twisting the bone until it breaks.
This isn't a mobility exercise worth the risk. The joint position alone already carries real injury risk in a live BJJ match, adding external load on top of it is asking for a torn UCL or a broken humerus. Skip this one entirely. 🦴
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