Lachman test

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Lachman test

The Lachman test (pronounced: LAK-mən) is a clinical examination used to diagnose injury of the anterior cruciate ligament (ACL), a crucial ligament in the knee. It is named after its developer, John Lachman, an American orthopedic surgeon.

Etymology

The term "Lachman test" is derived from the name of its inventor, Dr. John Lachman.

Procedure

The Lachman test is performed with the patient lying flat on their back, the knee flexed at a 20-30 degree angle, and the examiner stabilizing the thigh while pulling the tibia forward. A positive Lachman test indicates a torn or deficient ACL.

Related Terms

  • Anterior cruciate ligament: A ligament in the knee that crosses from the underside of the femur (the thigh bone) to the top of the tibia (the bigger bone in the lower leg).
  • Drawer test: Another clinical test used to detect injury or laxity in the anterior and posterior cruciate ligament.
  • Pivot-shift test: A clinical test used to diagnose injury of the ACL.

See Also

References

External links

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