Sacroilliac sprain/injury

[Dr. Norris]

When lying on your stomach you should be able to raise each leg equally into extension with a straight leg.
To test the muscular strength of the Glut's and Hamstrings lay on your stomach and have an associate assist you in the test. Raise your leg off the table into extension and have the assistant attempt to push your leg back down towards the table with a graduated resistance from a small amount to almost full force. If a weakness shows up during the graduation of increasing resistance the assistant should back off as the point is not to overpower but to find the level of muscular strength. If one side is different than the other there may be lumbar nerve involvement.
Try again and let me know the results.

***The information, including opinions and recommendations, contained in this forum by Dr. Norris is for general educational purposes only. Such information is not intended to be a substitute for professional medical advice, diagnosis, or treatment. No one should act upon any information on this Web site without first seeking medical advice from a qualified medical physician with whom they have a confidential doctor/patient relationship.***

Author: Dr. Tracy A. Norris D.C., C.C.E.P.

[ashishnagar]

Dear Dr. Norris,

i think the person asking you is a superman, he can lift his leg, upto 90* without support while lying on his stomuch!! i think i've even heard this for the first time. probably might be possible.

Well i think he can even go for a SI stress test along with the one described by you to rule out SI. probably.

[bikelet]

Yay i get to be superman/woman. Please read the bottom of my previous post, where i clarified my mistake. As yet i haven't tested with a partner however at the gym today i did some testing of my own.

On the hip ext machine at 60 kg, i found i could do around 20 reps on the right side (with some right sided SI niggles) and about 30 reps on the left. It just felt easier. I stood with straight legs and started the movement with my legs together, mimicking a SLR. It was hard for me to tell the relative contribution of hamstrings to gluts. I know the hamstrings were working, but this is also affected by the setup of the machine itself with the pad behind the knee. I also really felt the hip abductors of the support leg working hard- no differences noted though. An interesting feeling happens when i extend the hip- i feel like almost bruising between the lower sacrum and the pelvis but it feels good to keep extending and tensing the gluts it lessens.

On the seated leg curl machine, i did single leg curls. I'm not sure of the exact weight as it was just numbered. The left and right sides were approximately equal, i could get a rep or two more out of the right than the left if i pushed it. I think that's pretty normal though, a leg dominance issue. However, i had a harder time controlling the left leg, returning the weight smoothly without jerking or stopping in random places.

I tried leg ext machine and could actually do about 5 or so (i say or so because i wasn't 100% motivated!) more reps on the left than the right. I think this may be because about 3-4 years ago, i injured my left ITB and did heaps of VMO exercises on the left side. Like before, the left side was jerkier and less controlled than the right- i think this is a motor learning/control issue from not using that side as much.

Thanks for all your help