Anterior Drawer Test
Anterior Drawer Test - Related Videos
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FAQs
The endpoint describes the resistance felt when the tibia reaches the limit of its forward movement. A firm endpoint suggests resistance to further translation, whereas a soft endpoint can indicate reduced ligament restraint. Examining endpoint quality adds information beyond measuring movement alone and helps the clinician characterize possible ACL-related instability.
The opposite knee provides an individual reference for the amount of normal forward tibial movement and endpoint quality. This side-to-side comparison helps the examiner judge whether one knee demonstrates unusually increased translation or a different endpoint. Such comparison is important because the finding is interpreted in relation to the patient’s own unaffected side.
The joint should be relaxed so that muscle tension does not interfere with the examiner’s assessment of tibial movement and endpoint quality. Stabilizing the limb provides a consistent reference while the anterior-directed force is applied. These conditions help the observed translation more accurately reflect joint stability rather than positioning or resistance from the surrounding limb.
Concern increases when the tibia moves forward more than expected compared with the opposite side, particularly when the movement is accompanied by a soft endpoint. Either observation can suggest reduced ligament restraint, while their combination strengthens the clinical concern. The result remains an assessment finding and requires correlation with the broader examination.
The examiner positions the patient so the knee and limb can remain relaxed, stabilizes the limb, and then applies an anterior-directed force to the tibia. The examiner observes the amount of forward translation and assesses the endpoint, comparing both findings with the opposite knee. This sequence links the maneuver to its intended stability assessment.
The test is useful when evaluating suspected knee instability related to possible ACL injury. Its findings should be considered alongside the patient’s history and other physical examinations rather than treated as a standalone diagnostic result. This combined approach helps place abnormal translation or endpoint quality within the broader clinical assessment.