[3] Different terminologies have also been used to describe the tissues, including ligamentum epitrochleo-anconeum[4] and epitrochleo-olecranal ligament,[5] further contributing to the problem of clarifying the definitions.

[7][8] It can be categorized into two types:[9] Under both definitions, Osborne's ligament forms the roof of the cubital tunnel, an opening between the muscles through which the ulnar nerve passes.

[16] This contributes to chronic compression of the ulnar nerve which causes numbness and weakness in the fingers and can lead to intrinsic paralysis of the hand in untreated severe cases.

[20] A scratch collapse test can be utilized to evaluate the condition as well as pinpoint the location of the nerve entrapment by Osborne's ligament.

If there is a noticeable reduction in the resistance, the test's result is considered positive, and the stroked area is likely confirmed to be the site of the nerve entrapment.