ArticleZhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery2026
[Spontaneous facet joint fusion and stability assessment following isolated posterior internal fixation for lumbar burst fractures].
Article in Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objective: To investigate the impact of spontaneous facet joint fusion (SFJF) on lumbar motion function following isolated posterior internal fixation for lumbar burst fractures, characterize SFJF radiographically, and explore the indications for implant removal. Methods: Patients who underwent implant removal after posterior internal fixation for lumbar burst fractures between January 2018 and September 2024 were retrospectively reviewed. A total of 137 patients (330 segments) met the selection criteria and were enrolled, including 89 males and 48 females, with a median age of 50.0 years (range, 18-71 years). There were 98 patients with two segments, 22 with three segments, and 17 with four segments. Baseline characteristics were included, such as gender, age, AO fracture type, and visual analogue scale (VAS) score for back pain and Oswestry disability index (ODI) at last follow-up. Based on radiographic assessment, facet joint (FJ) fusion was graded as grade 1 (non-fusion), grade 2 (SFJF), or grade 3 (SFJF). Segmental range of motion (ROM) was measured, motion loss rate was calculated, and functional motion status was determined. Intergroup comparisons were performed for baseline characteristics and radiographic parameters. Factors influencing SFJF were analyzed, and the segmental distribution, temporal pattern of SFJF, and its impact on segmental stability were evaluated. Results: Postoperative CT revealed that the FJ fusion were rated as grade 1 in 53 patients (190 segments, 57.6%), grade 2 in 49 patients (86 segments, 26.1%), and grade 3 in 35 patients (54 segments, 16.4%). Accordingly, 84 patients (140 segments, 42.4%) were classified as SFJF. Patients with SFJF were younger and had a higher proportion of males, showing significant differences ( Conclusion: The incidence of SFJF following posterior internal fixation for lumbar burst fractures is high, with most fusion processes occurring within the first 6 months after operation. Segmental motion function decreases significantly with increasing fusion grade. Incorporating SFJF assessment into the decision-making process for implant removal in these patients is recommended.
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