Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis
Introduction: Laminoplasty is a common surgery for cervical myelopathy. Previous studies have analyzed the reoperation rates in posterior decompression surgeries of the cervical spine. However, few studies have solely focused on midline-splitting laminoplasty (MSL) using a large number of patients....
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The Japanese Society for Spine Surgery and Related Research
2019-10-01
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doaj-7c9ccf9cf8124a43ae3b678a04a1f7552020-11-25T01:58:29ZengThe Japanese Society for Spine Surgery and Related ResearchSpine Surgery and Related Research2432-261X2019-10-013430431110.22603/ssrr.2019-00282019-0028Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method AnalysisKo Hashimoto0Toshimi Aizawa1Hiroshi Ozawa2Yasuhisa Tanaka3Takashi Kusakabe4Naoki Morozumi5Yutaka Koizumi6Tetsuro Sato7Hironori Hyodo8Tomowaki Nakagawa9Eiji Takahashi10Takeshi Hoshikawa11Hideki Imaizumi12Shinji Ogawa13Fumio Kasama14Haruo Kanno15Eiji Itoi16Shoichi Kokubun17Department of Orthopaedic Surgery, Tohoku University Graduate School of MedicineDepartment of Orthopaedic Surgery, Tohoku University Graduate School of MedicineDepartment of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical UniversityDepartment of Orthopaedic Surgery, Tohoku Central HospitalDepartment of Orthopaedic Surgery, Tohoku Rosai HospitalDepartment of Orthopaedic Surgery, Sendai Nishitaga HospitalDepartment of Orthopaedic Surgery, Sendai Nishitaga HospitalDepartment of Orthopaedic Surgery, Sendai Orthopaedic HospitalDepartment of Orthopaedic Surgery, Sendai Orthopaedic HospitalDepartment of Orthopaedic Surgery, Sendai Orthopaedic HospitalDepartment of Orthopaedic Surgery, Sendai Orthopaedic HospitalDepartment of Orthopaedic Surgery, Tohoku Central HospitalDepartment of Orthopaedic Surgery, Osaki Citizen HospitalDepartment of Orthopaedic Surgery, Sendai Medical CenterDepartment of Orthopaedic Surgery, Matsuda HospitalDepartment of Orthopaedic Surgery, Tohoku University Graduate School of MedicineDepartment of Orthopaedic Surgery, Tohoku University Graduate School of MedicineResearch Center for Spine and Spinal Cord Disorders, Sendai Nishitaga HospitalIntroduction: Laminoplasty is a common surgery for cervical myelopathy. Previous studies have analyzed the reoperation rates in posterior decompression surgeries of the cervical spine. However, few studies have solely focused on midline-splitting laminoplasty (MSL) using a large number of patients. This aims to analyze the reoperation rates after MSL using the survival function method. Methods: Between 1988 and 2013, 4,208 MSLs were performed as a primary operation for cervical myelopathy and enrolled in our spinal surgery registration system. The Kaplan-Meier survival function method was used to analyze the rates of reoperation. Results: Of 4,208 patients with primary MSL, 40 underwent reoperation for neurological complications. The overall reoperation rate was 0.26%, 0.64%, 0.83%, 0.93%, and 0.95% at 1, 5, 10, 20, and >20 years, respectively. The causes of reoperation were postoperative cervical radiculopathy in 10 patients, stenosis at an adjacent level in 8, stenosis due to failed “open-door” lamina in 6, instability of the cervical spine in 4, cervical disc herniation in 3, elongation of ossification of the posterior longitudinal ligament in 3, spinal cord injury in 1, fracture of the cervical spine in 1, postoperative scar formation in 1, ossification of anterior longitudinal ligament in 1, and unknown in 2. The number of patients with surgical site infection (SSI) who needed surgical debridement was 34 (0.81%). Conclusions: Excluding reoperations for SSI, the reoperation rate of MSL was approximately 1.0% at the maximum of 26 years after surgery. MSL was determined to be a reliable surgical procedure regarding postoperative complications requiring additional surgeries.https://www.jstage.jst.go.jp/article/ssrr/3/4/3_2019-0028/_pdf/-char/encervical myelopathymidline-splitting laminoplastyreoperation ratesurvival function method analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ko Hashimoto Toshimi Aizawa Hiroshi Ozawa Yasuhisa Tanaka Takashi Kusakabe Naoki Morozumi Yutaka Koizumi Tetsuro Sato Hironori Hyodo Tomowaki Nakagawa Eiji Takahashi Takeshi Hoshikawa Hideki Imaizumi Shinji Ogawa Fumio Kasama Haruo Kanno Eiji Itoi Shoichi Kokubun |
spellingShingle |
Ko Hashimoto Toshimi Aizawa Hiroshi Ozawa Yasuhisa Tanaka Takashi Kusakabe Naoki Morozumi Yutaka Koizumi Tetsuro Sato Hironori Hyodo Tomowaki Nakagawa Eiji Takahashi Takeshi Hoshikawa Hideki Imaizumi Shinji Ogawa Fumio Kasama Haruo Kanno Eiji Itoi Shoichi Kokubun Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis Spine Surgery and Related Research cervical myelopathy midline-splitting laminoplasty reoperation rate survival function method analysis |
author_facet |
Ko Hashimoto Toshimi Aizawa Hiroshi Ozawa Yasuhisa Tanaka Takashi Kusakabe Naoki Morozumi Yutaka Koizumi Tetsuro Sato Hironori Hyodo Tomowaki Nakagawa Eiji Takahashi Takeshi Hoshikawa Hideki Imaizumi Shinji Ogawa Fumio Kasama Haruo Kanno Eiji Itoi Shoichi Kokubun |
author_sort |
Ko Hashimoto |
title |
Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis |
title_short |
Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis |
title_full |
Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis |
title_fullStr |
Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis |
title_full_unstemmed |
Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis |
title_sort |
reoperation rates after laminoplasty for cervical disorders: a 26-year period survival function method analysis |
publisher |
The Japanese Society for Spine Surgery and Related Research |
series |
Spine Surgery and Related Research |
issn |
2432-261X |
publishDate |
2019-10-01 |
description |
Introduction: Laminoplasty is a common surgery for cervical myelopathy. Previous studies have analyzed the reoperation rates in posterior decompression surgeries of the cervical spine. However, few studies have solely focused on midline-splitting laminoplasty (MSL) using a large number of patients. This aims to analyze the reoperation rates after MSL using the survival function method.
Methods: Between 1988 and 2013, 4,208 MSLs were performed as a primary operation for cervical myelopathy and enrolled in our spinal surgery registration system. The Kaplan-Meier survival function method was used to analyze the rates of reoperation.
Results: Of 4,208 patients with primary MSL, 40 underwent reoperation for neurological complications. The overall reoperation rate was 0.26%, 0.64%, 0.83%, 0.93%, and 0.95% at 1, 5, 10, 20, and >20 years, respectively. The causes of reoperation were postoperative cervical radiculopathy in 10 patients, stenosis at an adjacent level in 8, stenosis due to failed “open-door” lamina in 6, instability of the cervical spine in 4, cervical disc herniation in 3, elongation of ossification of the posterior longitudinal ligament in 3, spinal cord injury in 1, fracture of the cervical spine in 1, postoperative scar formation in 1, ossification of anterior longitudinal ligament in 1, and unknown in 2. The number of patients with surgical site infection (SSI) who needed surgical debridement was 34 (0.81%).
Conclusions: Excluding reoperations for SSI, the reoperation rate of MSL was approximately 1.0% at the maximum of 26 years after surgery. MSL was determined to be a reliable surgical procedure regarding postoperative complications requiring additional surgeries. |
topic |
cervical myelopathy midline-splitting laminoplasty reoperation rate survival function method analysis |
url |
https://www.jstage.jst.go.jp/article/ssrr/3/4/3_2019-0028/_pdf/-char/en |
work_keys_str_mv |
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