Abstract
To demonstrate the feasibility of percutaneous nucleoplasty procedures at L5/S1 level using cone beam CT (CBCT) and its associated image guidance technology for the treatment of lumbar disc herniation (LDH). We retrospectively reviewed 25 cases (20 men, 5 women) of LDH at L5/S1 levels. CBCT as guidance imaging was chosen after a first unsuccessful fluoroscopy attempt that was related to complex anatomy (n = 15), rapid pathological changes due to degenerative diseases (n = 7) or both (n = 3). Technical success, defined as correct needle positioning in the target LDH, and safety were evaluated; overall procedure time and radiation dose were registered. A visual analog scale (VAS) was used to evaluate pain and discomfort pre-intervention after 1week and 1, 3, and 6months after the procedure. Technical success was 100%; using CBCT as guidance imaging the needle was correctly positioned at the first attempt in 20 out of 25 patients. Neither major nor minor complications were registered during or after the procedure. The average procedure time was 11min and 56s (range, 9-15 min), whereas mean procedural radiation dose was 46.25Gy.cm2 (range 38.10-52.84Gy.cm2), and mean fluoroscopy time was 5min 34s (range 3min 40s to 6min 55s). The VAS pain score decreased significantly from 7.6 preoperatively to 3.9 at 1week, 2.8 at 1month, 2.1 at 3months, and 1.6 at 6months postoperatively. CBCT-guided percutaneous nucleoplasty is a highly effective technique for LDH with acceptable procedure time and radiation dose.
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