Tagged: unilateral pars fracture.
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I am a family physician with a 17 year old son who is a talented runner. 12 months ago he suffered a L5 left pars fracture that has never healed and is not significantly displaced. It causes no pain. He is getting similar symptoms to the original injury now on the right with high exertion from time to time. His right L5 pars is sclerotic on the CT and does not show edema on the MRI. He cannot confidently run fast without the fear of pain and worries about fracturing the right. Our local spine surgeon told us to not fix the left surgically and that bracing and a bone simulator will not help at this point. So his advise was to just keep running with cross training and see what happens. Any thoughts?
A unilateral pars fracture can be asymptomatic as the other side can take the work of stabilizing the ring. However, the increased stress on the opposite side can go one of two ways. Either the stable pars will hypertrophy and be able to take the increased load or will start to develop a stress reaction and be capable of fracturing with continued stress.
It seems like the intact side is suffering from overload and needs attention. It is not inappropriate to allow for some rest to see if this side will heal but in my opinion, once the intact side is developing stress, consideration needs to be given to repair the fractured side. I would assume that even if rest allows the intact side to recover, the same stress that initially caused the intact side stress reaction will reoccur and stress fractures will reappear.
Dr. Corenman
PLEASE REMEMBER, THIS FORUM IS MEANT TO PROVIDE GENERAL INFORMATION ON SPINE ANATOMY, CONDITIONS AND TREATMENTS. TO GET AN ACCURATE DIAGNOSIS, YOU MUST VISIT A QUALIFIED PROFESSIONAL IN PERSON.
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.Dr. Corenman,
Thank you for your reply. I wanted to update you since my first post. He did rest for 4 weeks then ran again and the right side started to cause pain. Another MRI did show mild edema in the pars and pedicle on right L5. He has since stopped running and is in an anti-lordotic brace with a spinal bone stimulator and PT for 3.5 months. Our new surgeon hopes that this heals the left side which will stabilize the ring. If it does not develop a bony union then he told us that he would rather not do surgery unless he gets more pain because the left side can grow enough cartilage/ fibrosis that it might hold. I hope so. Any thoughts? What is the probability of this healing with this treatment 11 months after the original fracture? Thank you for your help.
I have found that these fractures take at least three months to heal. 4 weeks is generally not enough time for any stability. More likely than not, he will heal but re-accumulate the stress reaction after 3.5 months and back to standard running program.
My opinion is that he will need a repair of the pars. Do give it the three months to heal and let him start training agin. IF the pain returns, he needs a repair of the pars.
Dr. Corenman
PLEASE REMEMBER, THIS FORUM IS MEANT TO PROVIDE GENERAL INFORMATION ON SPINE ANATOMY, CONDITIONS AND TREATMENTS. TO GET AN ACCURATE DIAGNOSIS, YOU MUST VISIT A QUALIFIED PROFESSIONAL IN PERSON.
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books. -
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