Segond fracture and bony avulsion of ACL origin

Case contributed by Dr Chris O'Donnell


Fall on left knee

Patient Data

Age: 13
Gender: Male

Segond fracture of the lateral tibial plateau rim (arrow) at the capsular attachment is virtually always associated with an ACL rupture.  In this case (ie young boy) the bone is weaker than the ligament thus there has been avulsion of the ligament origin with leak of bone marrow into the joint space leading to a lipohaemarthrosis (arrow). Prognosis is good in this case as long as the bone is repositioned on the tibial eminence - this can be difficult due to the transverse meniscal ligament intervening.

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Case information

rID: 18221
Published: 20th Jun 2012
Last edited: 9th Nov 2015
Inclusion in quiz mode: Included

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