Donald Corenman, MD, DC
Moderator
Post count: 8660

Bucks repair refers to direct repair of the pars defect (initially described by Buck in the 1970s). Pars repair generally can only be performed in younger individuals who have no significant slip. If there is any slip or nerve compression (which can only occur with substantial degenerative changes), the pars repair is contraindicated.

Also, the pars repair can place the L5 nerve root (if the level is L5-S1) in jeopardy as the repair screw traverses immediately next to the L5 root.

By the sounds of your symptoms (“severe pain, reduced leg power and saddle numbness”), you had a significant slip with nerve compression and probably were not a candidate for direct repair. I would assume that the repair might have caused L5 nerve dysfunction and the weakness you noted. This is reenforced by the EMG results.

I would assume with continued pain and impairment that you still have significant motion at this level, probably a nonunion of the pars fractures and compression of the nerves as well as instability of the segment. You need a new MRI and a CT scan on a 64 slice (or higher) scanner with 1mm cuts. You only need the L5-S1 level imaged. Don’t let them scan your entire lumbar spine as you don’t need that additional exposure.

Dr. Corenman

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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.