ACL injury in siblings (Full Version)

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SPORT-Rx -> ACL injury in siblings (May 31, 2006 2:55:00 PM)

I was asked by a parent of a female athlete, if
there is a greater risk of ACL injury in the sibling of an athlete who has torn her ACL? He asked this after watching a friend of his daughter tear her ACL playing soccer. The older sister of this girl has sustained bilateral ACL tears. I am familiar with much of the research on ACL injuries in female athletes, but do not recall if this has been studied.

Is anyone aware of a study that asked this question? If not, what are your thoughts, anecdotal evidence?

Dan



Randy Dixon -> Re: ACL injury in siblings (May 31, 2006 6:42:00 PM)

I think it is an interesting question and just shooting from the hip with no research I would say that ACL tears run in families. The first reason has to do with lifestyle, nutrition, etc. issues which are more than likely shared by siblings, along with growth rates. The second is that there is some correlation with body build and ACL, both in bodyweight and in biomechanical factors. Ancedotally, I see that it is often the case that if a person has problem with their joints, others in the family do too.



nunnallymk -> Re: ACL injury in siblings (June 1, 2006 6:47:00 AM)

I can personally relate to this topic. My younger sister has a history of knee problems...4 ACL reconstructions (2 on each knee) over a period of 10 years. I tore my ACL last year playing softball. But our body frames are completely different, she has a larger frame than I do. That would be an interesting area of research....



Tom Reeves DPT ATC -> Re: ACL injury in siblings (June 1, 2006 12:47:00 PM)

Dan,
Look for an article co-written by Elizabeth Arends M.D.and Randall Dick of the NCAA. They had some versions in journals and some in Sports Illustrated I think. They were probably first published in about 1995 or so. They talk primarily about ACL injuries in females vs males but I seem to recall that they maybe talked about familial relationships as well.



rwillcott -> Re: ACL injury in siblings (June 2, 2006 12:38:00 AM)

I'm sure there must be a genetic link. I would say the biomechanics would play a large role, in particular the q-angle of the knee. This would be especially prevelant in females athletes. I'd be interested to find out more.

Rob



ptace -> Re: ACL injury in siblings (July 1, 2006 6:33:00 PM)

After seeing myself, my sister, and my two brothers our local Orthopedic surgeon has concluded that ACL injuries do in fact run in famililies after treating us for a grand total of 9 tears.

Aside from the personal experiace, I went to a conference last year, I can't remember if it was the State or District Athletic Training association, but there was an Orthopedic surgeon that came in and discussed this issue. There is some genetic component to ACL injuries, but not enough to account for every injury. Individual biomechanics and other external factors have a much greater influence.



SPORT-Rx -> Re: ACL injury in siblings (June 21, 2007 11:33:00 AM)

Update on original question:

Flynn, R. Kevin, Pedersen, Cheryl L., Birmingham, Trevor B., Kirkley, Alexandra, Jackowski, Dianne, Fowler, Peter J. The Familial Predisposition Toward Tearing the Anterior Cruciate Ligament: A Case Control Study Am J Sports Med 2005 33: 23-28

Authors concluded: "Findings are consistent with a familial predisposition toward tearing the anterior cruciate ligament."

Dan



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