• Eur Spine J · Mar 2023

    Novel therapeutic strategy in the treatment of ossification of the ligamentum flavum associated with dural ossification.

    • Qiangqiang Pan, Yanyu Zhu, Zhenhui Zhang, Wei Mei, and Qingde Wang.
    • Henan University, Henan Province, KaiFeng, China.
    • Eur Spine J. 2023 Mar 1; 32 (3): 106810761068-1076.

    PurposeTo investigate the imaging characteristics of thoracic ossification of ligamentum flavum (OLF) combined with dural ossification (DO) and the clinical efficacy of zoning laminectomy.MethodThe clinical data of 48 patients with thoracic OLF combined with DO who underwent zoning laminectomy between June 2016 and May 2020 were retrospectively analyzed. The modified Japanese Orthopedic Association (mJOA) score was used to evaluate neurological function before and after surgery, and the clinical efficacy was evaluated according to the improvement rate.ResultsThe symptoms of all patients significantly improved after the operation, and the average follow-up time was 27.8 (10-47) months. In addition, the average mJOA score had increased from 5.0 (2-8) preoperatively to 8.7 (6-11) postoperatively (t = 18.880, P < 0.05). The average improvement rate was 62.6% (25-100%), with 16 patients graded as excellent, 21 as good, and 11 as fair. Cerebrospinal fluid leakage occurred in 12 cases (25.0%), and all of them healed well after treatment. No postoperative aggravation of neurological dysfunction, wound infection or hematoma occurred. At the last follow-up, there was no recurrence of symptoms and kyphosis.ConclusionThe Zoning laminectomy described here is both safe and effective.© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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