| Cubital Tunnel Syndrome -- Part I (609 words) |
 | The cubital tunnel begins at the medial posterior condylar groove of the humerus at the point where the posterior condylar groove is spanned by the cubital tunnel retinaculum.2 The cubital tunnel retinaculum runs from the medial epicondyle of the humerus to the olecranon and is transversely oriented to the path of the nerve. |
| The cubital tunnel retinaculum may be readily palpated by flexing the elbow and applying finger tip pressure along the path of the posterior condylar groove, because the retinaculum is tightened in flexion and relaxed in extension. |
| The cubital tunnel's volume decreases with flexion of the elbow, thus increasing the pressure on the ulnar nerve with this position.3 Pressures greater than 100 mm Hg have been documented to occur with elbow flexion when the cubital tunnel retinaculum is artificially tightened. |
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