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Lachman TestAka: Lachman's Test
- Indications
- Assessment for Anterior Cruciate Ligament Rupture
- See Also
- Efficacy
- Lachman Test is most sensitive test for ACL rupture
- Likelihood ratio
- Positive Test: 42 (very predictive)
- Negative Test: 0.1
- References
- Technique: Patient position
- Knee in 10 to 20 degrees flexion
- Technique: Examiner position
- Non-dominant hand
- Stabilizes distal femur
- Standard Dominant hand positioning
- Grasps back of proximal tibia posteriorly
- Hold slightly below popliteal space
- Place Thumb over joint line anterolaterally
- Apply slightly above tibial plateau
- Increases sensitivity for joint laxity
- Grasps back of proximal tibia posteriorly
- Alternate position for larger thigh (difficult to hold)
- Prop knee up in 10-20 degrees flexion
- Pillow in popliteal fossa
- Allow leg to over edge of table
- Technique
- Use both hands, apply fingers behind proximal tibia
- Apply thumbs to either side of tibial plateau
- Prop knee up in 10-20 degrees flexion
- Non-dominant hand
- Technique: Test
- Pulling proximal tibia anteriorly and posteriorly
- Compare both sides for end-point laxity
- Interpretation: Positive Test for ACL rupture
- Lax endpoints on anterior translation
Lachman's test response (C0231752) | |
|---|---|
| Concepts | Diagnostic Procedure (T060) |
| English | Lachman test, Lachman's test, Lachman's test response |
| Spanish | prueba de Lachman, respuesta de la prueba de Lachman |
| Parent Concepts | Feature of knee region (C1286208) |
| Sources | SCTSPA, SNOMEDCT Derived from the NIH UMLS (Unified Medical Language System) |
