Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis

Hashimoto, Kazuhito; Aizawa, Tadanori; Ozawa, Hiroshi; Tanaka, Yasuhisa; Kusakabe, Takashi; Morozumi, Naoki; Koizumi, Yayoi; Sato, Tetsuro; Hyodo, Hironori; Nakagawa, Tomowaki; Takahashi, Eiji; Hoshikawa, Takeshi; Imaizumi, Hideki; Ogawa, Shinji; Kasama, Fumio; Kanno, Haruo; Itoi, Eiji; Kokubun, S.

doi:10.22603/ssrr.2019-0028

Cited by 7 publications

(6 citation statements)

References 26 publications

(18 reference statements)

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“…[35][36][37][38][39][40] For second surgery, 2 citations reported on the same dataset, therefore we considered 8 unique studies. [41][42][43][44][45][46][47][48][49] For adjacent level surgery, 2 sets of citations reported on the same dataset, therefore we considered 5 unique studies. [50][51][52][53][54][55][56] For Analysis #1 (second surgery), the included studies were published between 2009 and 2020.…”

Section: Resultsmentioning

confidence: 99%

“…Analysis #1 considered 2 randomized controlled trials, 41,42 3 large database studies, [43][44][45][46] and 2 single-center retrospective cohort studies. [47][48][49] At least 2 studies reported data for ACDF, ADR, LAMP, and PDIF. Overall, 49 950 patients underwent anterior cervical discectomy and fusion (ACDF), 357 underwent artificial disc replacement (ADR), 6800 laminoplasty, and 16 704 posterior laminectomy and instrumented fusion.…”

Section: Resultsmentioning

confidence: 99%

“…Overall, 49 950 patients underwent anterior cervical discectomy and fusion (ACDF), 357 underwent artificial disc replacement (ADR), 6800 laminoplasty, and 16 704 posterior laminectomy and instrumented fusion. One study limited patients to a diagnosis of radiculopathy, 42 2 included patients with either radiculopathy or myelopathy, 41 , 44 3 included only patients with myelopathy, 46 , 47 , 49 and 1 did not specify the clinical diagnosis, stating only that patients had multilevel cervical degenerative disease. 43 2 studies, both of which were RCTs comparing ACDF to ADR, included only single level disease.…”

Section: Resultsmentioning

confidence: 99%

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Long-Term Survivorship of Cervical Spine Procedures; A Survivorship Meta-Analysis and Meta-Regression

Sarraj

Hache

Foroutan

et al. 2022

Global Spine Journal

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Study Design Systematic Review Objectives To conduct a meta-analysis on the survivorship of commonly performed cervical spine procedures to develop survival function curves for (i) second surgery at any cervical level, and (ii) adjacent level surgery. Methods A systematic review of was conducted following PRISMA guidelines. Articles with cohorts of greater than 20 patients followed for a minimum of 36 months and with available survival data were included. Procedures included were anterior cervical discectomy and fusion (ACDF), cervical disc arthroplasty (ADR), laminoplasty (LAMP), and posterior laminectomy and fusion (PDIF). Reconstructed individual patient data were pooled across studies using parametric Bayesian survival meta-regression. Results Of 1829 initial titles, 16 citations were included for analysis. 73 811 patients were included in the second surgery analysis and 2858 patients in the adjacent level surgery analysis. We fit a Log normal accelerated failure time model to the second surgery data and a Gompertz proportional hazards model to the adjacent level surgery data. Relative to ACDF, the risk of second surgery was higher with ADR and PDIF with acceleration factors 1.73 (95% CrI: 1.04, 2.80) and 1.35 (95% CrI: 1.25, 1.46) respectively. Relative to ACDF, the risk of second surgery was lower with LAMP with deceleration factor .06 (95% CrI: .05, .07). ADR decreased the risk of adjacent level surgery with hazard ratio .43 (95% CrI: .33, .55). Conclusions In cases of clinical equipoise between fusion procedures, our analysis suggests superior survivorship with anterior procedures. For all procedures, laminoplasty demonstrated superior survivorship.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Long-Term Survivorship of Cervical Spine Procedures; A Survivorship Meta-Analysis and Meta-Regression

Sarraj

Hache

Foroutan

et al. 2022

Global Spine Journal

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“…The authors referenced the installation of hydroxyapatite spacers as possibly related to higher infection rate. 10 Furthermore, considering the marked increase in healthcare costs, the cost of implants is becoming a major issue worldwide.…”

Section: Discussionmentioning

confidence: 99%

Open-door laminoplasty with stand-alone autologous bone spacers: evaluation of enlarged laminar arch with CT–multiplanar reconstruction

Kono

Matsuda

Maekawa

et al. 2021

Journal of Neurosurgery: Spine

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OBJECTIVE The authors aimed to determine the efficacy of open-door laminoplasty with stand-alone autologous bone spacer for preserving enlarged lamina in patients with cervical myelopathy. METHODS Patients who underwent open-door laminoplasty for cervical myelopathy with stand-alone autologous bone spacer and underwent CT 1 week and 1 year after surgery were included in this study. There were 20 men and 13 women, with an average (range) age of 65.0 (37–86) years. Seventeen patients were younger than 70 years, and 16 patients were older than 70 years. Autogenous bone spacers made from spinous processes were used in all patients. Slits were made on both sides of the spacers. The lamina was raised with a curette, and a spacer was inserted without any sutures. Before surgery and 1 week and 1 year after surgery, the anteroposterior diameter (APD) of the spinal canal was measured using midsagittal-plane CT–multiplanar reconstruction. The bone union rate of the hinge side and autogenous bone spacer of each lamina was determined using CT images obtained 1 year after surgery. Results 1 year after surgery were evaluated using Japanese Orthopaedic Association (JOA) score. RESULTS The mean ± SD APD increase rate was 56.3% ± 21.3% 1 week after surgery and 51.7% ± 20.6% 1 year later. The average APD decrease rate was 2.9% ± 3.8%. The bone union rate on the hinge side was 100%, and that of autologous bone spacer was 93.8% 1 year after surgery. The mean APD decrease rate was 3.3% in patients younger than 70 years and 2.3% in those older than 70 years. There was no significant difference between the two groups (p > 0.05, nonpaired t-test). The JOA score averaged 10.1 before surgery and 13.3 a year after surgery (total score 17). The average improvement rate was 46.3% ± 26.4%. CONCLUSIONS The authors devised and implemented a technique for inserting an autologous bone spacer between the opened lamina and lateral mass without sutures. The enlarged spinal canal was maintained 1 year after surgery. This simple method does not require any instrumentation or additional cost to stabilize the opened lamina.

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confidence: 99%

Two Cases of Delayed Onset Myelopathy at the Cervicothoracic Junction Caused by Spontaneous Multiple Interlaminar Bony Fusion after Cervical Laminoplasty in Patients with Ossification of the Posterior Longitudinal Ligament

Funayama

Asada

Shibao

et al. 2023

Spine Surg Relat Res

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Main textCervical laminoplasty is the standard method for cervical myelopathy 1, 2 ; it has stable long-term results 3,4 . Although spontaneous interlaminar fusion following laminoplasty frequently occurs, it is rarely clinically problematic 5 . Here, we report two rare cases of cervical ossification of the posterior longitudinal ligament (OPLL) with a spontaneous multiple interlaminar fusion after laminoplasty and delayed onset myelopathy at C7/T1. Case 1 An 80-year-old man underwent a double-door laminoplasty from C3 to C7 for cervical OPLL 12 years earlier (Fig. 1A). He had no problems for 10 years after the operation. At the initial visit, he used a cane while walking due to spastic gait, and his Japanese Orthopaedic Association (JOA)

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Reoperation Rates after Laminoplasty for Cervical Disorders: A 26-Year Period Survival Function Method Analysis

Cited by 7 publications

References 26 publications

Long-Term Survivorship of Cervical Spine Procedures; A Survivorship Meta-Analysis and Meta-Regression

Long-Term Survivorship of Cervical Spine Procedures; A Survivorship Meta-Analysis and Meta-Regression

Open-door laminoplasty with stand-alone autologous bone spacers: evaluation of enlarged laminar arch with CT–multiplanar reconstruction

Two Cases of Delayed Onset Myelopathy at the Cervicothoracic Junction Caused by Spontaneous Multiple Interlaminar Bony Fusion after Cervical Laminoplasty in Patients with Ossification of the Posterior Longitudinal Ligament

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