Your logic is correct in that stabilization of this implant might help in the immediate post-operative period but there are structures that might not cooperate with stabilization (vessels and nerves). The other problem is that this joint is “soft”. That is, the bone that lines the sacroiliac joint does not lend to very strong fixation. Screw fixation is never as good as in the pedicles of the lumbar spine. However, fixation into the pelvis is very good for scoliosis fixation. You might have given me an idea. Thanks.
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.