What is the characteristic finding in a first degree ligament sprain regarding joint stability?

In a first-degree ligament sprain, the characteristic finding is that the joint remains stable. This type of injury typically involves minor damage to the ligament, which may include micro-tears or stretching, but without complete disruption of the ligament's integrity. As a result, while there may be some pain and swelling, the ligament is still able to provide enough support to keep the joint stable during movement.

This stability contrasts with more severe sprains, where the integrity of the ligament is compromised, leading to instability within the joint. The primary focus in a first-degree sprain is on managing symptoms and promoting healing, as the ligament has not sustained the level of damage that would result in significant joint instability.