Execution
- 1Position the patient supine with the tested knee near extension.
- 2Control the foot and proximal tibia.
- 3Apply valgus stress and the tibial rotation described for anteromedial rotatory instability.
- 4Flex and extend the knee through the provocative range.
- 5Observe for a jolt or subluxation-reduction event.
Positive outcome
A sudden jolt, clunk, or apprehension during the maneuver is positive. The test suggests anteromedial rotatory instability. The finding should be integrated with MCL, ACL, posterior oblique ligament, and capsule assessment.
Studies
| Study | Reliability | Sn | Sp | LR+ | LR− |
|---|---|---|---|---|---|
| Lemaire et al. (year unverified) | NA | NA | NA | NA | NA |
CommentLemaire jolt is a historical rotatory instability test with limited modern standalone validation. Magee's ligament table emphasizes that combined structures are usually involved. Value is low unless corroborated by clearer ligament signs.
Low Clinical Value