Segond fracture with associated anterior cruciate ligament tear

Case contributed by Dr Ruwaida Bt Yaakub

Presentation

25 years old man, alleged motor vehicle accident and sustained left knee dislocation. Anterior drawer test is positive.

Patient Data

Age: 25
Gender: Male

Small cortical avulsion fracture at the lateral tibial plataeu.

Avulsion fracture at the lateral tibial plateau. There is complete tear of the anterior cruciate ligament (ACL).

Both medial and lateral menisci are intact. No intrasubstance abnormal high signal intensity seen to suggest meniscal tear or mucoid degeneration.

Case Discussion

Segond fractures are avulsions of the lateral aspect of the tibial plateau. This fracture is frequently associated with anterior cruciate ligament (ACL) tear (75-100%) and meniscal tear (67%).

Mechanism of injury resulting in this type of fracture is external rotation with varus stress causing excessive tension on the lateral capsule ligament.

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Case information

rID: 50885
Case created: 26th Jan 2017
Last edited: 2nd Jul 2017
Inclusion in quiz mode: Included

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