Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up
Abstract Purpose This study aims to evaluate complications, clinical outcomes, and radiographic results following Coflex implantation. Methods We retrospectively studied 66 patients who had decompressive surgery combined with Coflex implantation to treat lumbar spinal stenosis. All imaging data were...
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| Format: | Article |
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BMC
2023-08-01
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| Series: | BMC Musculoskeletal Disorders |
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| Online Access: | https://doi.org/10.1186/s12891-023-06798-9 |
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| author | Kai-Yu Li Hua-Lin Li Lin-Jie Chen Jian-Wei Xiang Chen-Chao Li Jun-Jie Weng Nai-Feng Tian |
| author_facet | Kai-Yu Li Hua-Lin Li Lin-Jie Chen Jian-Wei Xiang Chen-Chao Li Jun-Jie Weng Nai-Feng Tian |
| author_sort | Kai-Yu Li |
| collection | DOAJ |
| description | Abstract Purpose This study aims to evaluate complications, clinical outcomes, and radiographic results following Coflex implantation. Methods We retrospectively studied 66 patients who had decompressive surgery combined with Coflex implantation to treat lumbar spinal stenosis. All imaging data were collected and examined for imaging changes. Clinical outcomes, included Oswestry Disability Index (ODI), back and leg visual analog scale (VAS) scores, were evaluated before surgery, six months after surgery and at the last follow-up. The number of complications occurring after five years of follow-up was counted. All reoperation cases were meticulously recorded. Results 66 patients were followed up for 5–14 years. The VAS and ODI scores were significantly improved compared with baseline. Heterotopic Ossification (HO) was detectable in 59 (89.4%). 26 (39.4%) patients had osteolysis at the contact site of Coflex with the spinous process. Coflex loosening was detected in 39 (60%) patients. Spinous process anastomosis was found in 34 (51.5%) patients. There was a statistically significant difference in the VAS score of back pain between patients with and without spinous process anastomosis. Nine cases of lumbar spinal restenosis were observed, and prosthesis fracture was observed in one case. Conclusion Our study identified various imaging changes after Coflex implantation, and majority of them did not affect clinical outcomes. The majority of patients had HO, but osteolysis and Coflex loosening were relatively rare. The VAS score for back pain of these patients was higher if they have spinous process anastomosis. After five-year follow-up, we found lumbar spinal restenosis and prosthesis fracture cases. |
| first_indexed | 2024-03-10T22:25:10Z |
| format | Article |
| id | doaj.art-725abd01c5764bcfa7ae8f163eb0e294 |
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| issn | 1471-2474 |
| language | English |
| last_indexed | 2024-03-10T22:25:10Z |
| publishDate | 2023-08-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Musculoskeletal Disorders |
| spelling | doaj.art-725abd01c5764bcfa7ae8f163eb0e2942023-11-19T12:09:01ZengBMCBMC Musculoskeletal Disorders1471-24742023-08-012411910.1186/s12891-023-06798-9Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-upKai-Yu Li0Hua-Lin Li1Lin-Jie Chen2Jian-Wei Xiang3Chen-Chao Li4Jun-Jie Weng5Nai-Feng Tian6Zhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityZhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityZhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityZhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityZhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityZhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityZhejiang Spine Research Center, Department of Spine Surgery, The Second Affiliated Hospital and Yuying, Children’s Hospital of Wenzhou Medical UniversityAbstract Purpose This study aims to evaluate complications, clinical outcomes, and radiographic results following Coflex implantation. Methods We retrospectively studied 66 patients who had decompressive surgery combined with Coflex implantation to treat lumbar spinal stenosis. All imaging data were collected and examined for imaging changes. Clinical outcomes, included Oswestry Disability Index (ODI), back and leg visual analog scale (VAS) scores, were evaluated before surgery, six months after surgery and at the last follow-up. The number of complications occurring after five years of follow-up was counted. All reoperation cases were meticulously recorded. Results 66 patients were followed up for 5–14 years. The VAS and ODI scores were significantly improved compared with baseline. Heterotopic Ossification (HO) was detectable in 59 (89.4%). 26 (39.4%) patients had osteolysis at the contact site of Coflex with the spinous process. Coflex loosening was detected in 39 (60%) patients. Spinous process anastomosis was found in 34 (51.5%) patients. There was a statistically significant difference in the VAS score of back pain between patients with and without spinous process anastomosis. Nine cases of lumbar spinal restenosis were observed, and prosthesis fracture was observed in one case. Conclusion Our study identified various imaging changes after Coflex implantation, and majority of them did not affect clinical outcomes. The majority of patients had HO, but osteolysis and Coflex loosening were relatively rare. The VAS score for back pain of these patients was higher if they have spinous process anastomosis. After five-year follow-up, we found lumbar spinal restenosis and prosthesis fracture cases.https://doi.org/10.1186/s12891-023-06798-9CoflexHeterotopic ossificationLooseningOsteolysisSpinous process anastomosis |
| spellingShingle | Kai-Yu Li Hua-Lin Li Lin-Jie Chen Jian-Wei Xiang Chen-Chao Li Jun-Jie Weng Nai-Feng Tian Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up BMC Musculoskeletal Disorders Coflex Heterotopic ossification Loosening Osteolysis Spinous process anastomosis |
| title | Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up |
| title_full | Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up |
| title_fullStr | Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up |
| title_full_unstemmed | Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up |
| title_short | Complications and radiographic changes after implantation of interspinous process devices: average eight-year follow-up |
| title_sort | complications and radiographic changes after implantation of interspinous process devices average eight year follow up |
| topic | Coflex Heterotopic ossification Loosening Osteolysis Spinous process anastomosis |
| url | https://doi.org/10.1186/s12891-023-06798-9 |
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