Biomechanical Evaluation of the Suture Anchors Used in Open-Door Laminoplasty

Kurokawa, Yoshitaka; Yokoyama, Yasuharu; Kuroda, Koichi; Koruprolu, Sarath; Paller, David; Nakano, Atsushi; Baba, Ichiro; Neo, Masashi

doi:10.1097/brs.0000000000000522

Cited by 8 publications

(9 citation statements)

References 29 publications

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“…Second, double-door laminoplasty allowed for the intraoperative observation of the spinal cord, directly or using ultrasonography, after the decompression. Third, in cases where suture anchors are used in cervical laminoplasty, the loads on suture anchors are thought to be lower in double-door laminoplasty than in open-door laminoplasty because of the shorter lever arm of the split lamina, as reported by us [14], and so there may be less possibility of implant failure and lamina closure in double-door laminoplasty than open-door laminoplasty. The present study has some limitations.…”

Section: Discussionmentioning

confidence: 83%

“…However, few studies have closely investigated the validity of suture anchor use in cervical laminoplasty. We previously investigated the mechanical loads on suture anchors in cervical laminoplasty, and showed that all loads during cervical motion were much lower than the failure loads of the suture anchor [14]. However, this previous study was a cadaveric study, where the cervical spine was moved passively.…”

Section: Discussionmentioning

confidence: 96%

“…In our previous cadaveric study, we reported that suture anchor use in cervical laminoplasty was sufficiently tolerable biomechanically [14]. However, no study has investigated the clinical performance of the constructs.…”

Section: Introductionmentioning

confidence: 99%

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Double-door cervical laminoplasty with suture anchors: evaluation of the clinical performance of the constructs

et al. 2016

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 96%

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Double-door cervical laminoplasty with suture anchors: evaluation of the clinical performance of the constructs

et al. 2016

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“…We have designed a contralateral “Zhang’s portal” to facilitate cervical canal decompression ( 18 ), therefore, we have rich experience in bilateral biportal operations. Kurokaw ( 19 ) demonstrated the validity of suture anchors in cervical laminoplasty in a cadaveric study, and we successfully performed suture anchor fixation on the contralateral side using the UBE technique. Compared with open surgery, continuous irrigation not only ensures a clear operative field, but also lowers the risk of infection ( 7 , 20 ).…”

Section: Discussionmentioning

confidence: 94%

Case Report: Bilateral Biportal Endoscopic Open-Door Laminoplasty With the Use of Suture Anchors: A Technical Report and Literature Review

Zhu

Wang²,

Cheng³

et al. 2022

Front. Surg.

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BackgroundUnilateral biportal endoscopy (UBE) is a newly developed technique for spine surgery. Owing to the convenience of nerve decompression and compatibility with open surgical instruments under endoscopic guidance, this technique has seen widespread global use. In this study, we first used modified UBE with suture anchor fixation for cervical laminoplasty in a 65-year-old female patient with good clinical outcomes.MethodsWe used bilateral biportal endoscopy (BBE) for cervical laminoplasty with suture anchor fixation in a patient with cervical stenosis. Under endoscopic guidance, a bilateral approach was used to make the gutter and lift the lamina door. After the lamina doors were opened, sutures were tied tightly using facia cannula and knot pusher. After confirming the solidarity of the open-door status, the drainage tube was inserted and the incisions were closed. The patient’s pre- and postoperative radiological and clinical results were evaluated.ResultsPostoperative Japanese Orthopaedic Association (JOA) and Neck Disability Index (NDI) scores were improved clinically, and cervical canal was decompressed radiologically.ConclusionsBBE laminoplasty combined with suture anchor fixation showed a favorable clinical and radiological result and appears to be a safe and effective technique for cervical stenosis.

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“…Similarly, Khan, et al 11 reported the utility and ease of using the suture-anchor system. 12 Kurokawa, et al 13 reported the validity of using suture anchors in laminoplasty. Hu, et al 14 conducted a study to compare open-door laminoplasty between patients with anchors on the hinge side and patients with titanium miniplates.…”

Section: Discussionmentioning

confidence: 99%

Modified Open-Door Laminoplasty Using a Ceramic Spacer and Suture Fixation for Cervical Myelopathy

et al. 2015

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PurposeTo introduce a new simple technique using suture anchors and ceramic spacers to stabilize the elevated laminae in open-door cervical laminoplasty. Although ceramic spacers were placed in the opened laminae and fixed with nylon threads in this series, it was occasionally difficult to fix the nylon threads to the lateral mass.Materials and MethodsStudy 1: A preliminary study was conducted using a suture anchor system. Sixteen consecutive patients who underwent surgery for cervical myelopathy were prospectively examined. Study 2: The second study was performed prospectively to evaluate the feasibility of this new technique based on the result of the preliminary study. Clinical outcomes were examined in 45 consecutive patients [cervical spondylotic myelopathy (CSM)] and 43 consecutive patients (OPLL). The Japanese Orthopedic Association scoring system (JOA score), axial neck pain, and radiological findings were analyzed.Results1) In one case, re-operation was necessary due to dislodgement of the ceramic spacer following rupture of the thread. 2) In all patients, postoperative CT scans showed that the anchors were securely inserted into the bone. In the CSM group, the average JOA score improved from 9.5 points preoperatively to 13.3 at follow-up (recovery 51%). In the OPLL group, the average JOA score improved from 10.1 (5-14) points preoperatively to 14.4 (11-16) at follow-up (recovery 62%). There were no serious complications.ConclusionThe use of the suture anchor system made it unnecessary to create a hole in the lateral mass and enabled reliable and faster fixation of the HA spacers in open-door laminoplasty.

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Biomechanical Evaluation of the Suture Anchors Used in Open-Door Laminoplasty

Abstract: N/A.

Cited by 8 publications

References 29 publications

Double-door cervical laminoplasty with suture anchors: evaluation of the clinical performance of the constructs

Double-door cervical laminoplasty with suture anchors: evaluation of the clinical performance of the constructs

Case Report: Bilateral Biportal Endoscopic Open-Door Laminoplasty With the Use of Suture Anchors: A Technical Report and Literature Review

Modified Open-Door Laminoplasty Using a Ceramic Spacer and Suture Fixation for Cervical Myelopathy

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