Cervical Unilateral Open-Door Laminoplasty With Titanium Miniplates Through Newly Designed Hydroxyapatite Spacers  -Technical Note-

Tanaka, Satoshi; Tashiro, Takashi; Gomi, Akira; Ujiié, Hiroshi

doi:10.2176/nmc.51.673

Cited by 10 publications

(5 citation statements)

References 16 publications

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“…The ratio of JOA score improvement rates was 47.8% in the plate group and 42.4% in the suture group, which is similar to others reported in the literature. 14,15 The JOA score increase was higher in the plate group, but it was not statistically signifi cant between the 2 groups. Using a plate in open-door laminoplasty may not contribute to neurological improvement more than using sutures would.…”

Section: A 6b 6c 6dmentioning

confidence: 86%

Clinical Application of a New Plate Fixation System in Open-door Laminoplasty

Jiang¹,

Chen²,

Chen³

et al. 2012

Orthopedics

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The purpose of this retrospective clinical series was to evaluate the benefits and complications of plate fixation for open-door laminoplasty in cervical spondylotic myelopathy with multilevel spinal stenosis compared with open-door laminoplasty without fixation. Forty-nine patients underwent open-door laminoplasty for cervical myelopathy with multilevel spinal stenosis with at least 13 months of follow-up. A plate was used as the sole method of fixation between the lateral mass and lamina with 3 screws. Computed tomography scans obtained pre- and postoperatively were assessed for plate complications and spinal canal enlargement. Pre- and postoperative neurological condition was assessed by the Japanese Orthopedic Association (JOA) myelopathy score. Overall cervical spine range of motion (ROM) was measured in full flexion and extension radiographs pre- and postoperatively. No restenosis due to door reclosure was noted, and no plates failed. No screws were backed out or broken. Almost all patients showed neurological improvement. The JOA score increased by 3.9±0.7 points in the suture group and 4.3±0.8 points in the plate group (P>.05). The postoperative increase in mean anteroposterior diameter of the spinal canal from C3 to C7 was 4.5±0.6 mm in the suture group and 5.1±0.5 mm in the plate group. The greater mean anteroposterior diameter increase in the plate group was statistically significant (P<.01). The mean cervical ROM decreased in the plate and suture groups postoperatively (P<.001). No significant difference was found in mean cervical ROM reduction between the groups (P>.05). No difference in axial symptoms was found between the 2 groups.

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Section: A 6b 6c 6dmentioning

confidence: 86%

Clinical Application of a New Plate Fixation System in Open-door Laminoplasty

Jiang¹,

Chen²,

Chen³

et al. 2012

Orthopedics

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“…Recently, several authors have presented new technique of cervical laminoplasty using hydroxyapatite laminar spacers and titanium miniplates. Tanaka et al reported that hardware failure or screw loosening did not occur during 36.3 months mean follow-up period after a single open door laminoplasty using hydroxyapatite laminar spacers and titanium miniplates in 22 patients 31) . Goto et al reported that hardware failure or screw loosening did not occur during 24.3 months mean follow-up period after a single open door laminoplasty using hydroxyapatite laminar spacers and titanium miniplates in 25 patients 5) .…”

Section: Discussionmentioning

confidence: 99%

Modified Open-door Laminoplasty Using Hydroxyapatite Spacers and Miniplates

Jin

Kim

et al. 2014

Korean J Spine

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ObjectiveCervical laminoplasty has been widely accepted as one of the major treatments for cervical myelopathy and various modifications and supplementary procedures have been devised to achieve both proper decompression and stability of the cervical spine. We present the retrospectively analyzed results of a modified unilateral open-door laminoplasty using hydroxyapatite (HA) spacers and malleable titanium miniplates.MethodsFrom June 2008 to May 2012, among patients diagnosed with cervical spondylotic myelopathy and ossification of posterior longitudinal ligament, the patients who received laminoplasty were reviewed. Clinical outcome was assessed using Frankel grade and Japanese Orthopaedic Association score. The radiologic parameters were obtained from plain films, 3-dimensional computed tomography and magnetic resonance images.ResultsA total of 125 cervical laminae were operated in 38 patients. 11 patients received 4-level laminoplasty and 27 patients received 3-level laminoplasty. Postoperatively, the mean Frankel grade and JOA score were significantly improved from 3.97 to 4.55 and from 12.76 to 14.63, respectively (p<0.001). Radiologically, cervical curvature was worsened from 19.09 to 15.60 (p=0.025). The percentage of range of motion preservation was 73.32±22.39%. The axial dimension of the operated spinal canal was increased from 1.75 to 2.70 cm2 (p<0.001).ConclusionIn the presenting study, unilateral open-door laminoplasty using HA spacers and miniplates appears to be a safe, rapid and easy procedure to obtain an immediate and rigid stabilization of the posterior elements of the cervical spine. This modified laminoplasty method showed effective expansion of the spinal canal and favorable clinical outcomes.

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“…The modification of cervical laminoplasty and halfcut spinous process at the proximal and distal of the opening is still not widely used. [3][4][5][6] Nevertheless, the outcome of this modified technique is preferable in maintaining the anteroposterior diameter of spinal canal as well as reducing the displacement of guttered laminae. 7 Furthermore, the neck motion, especially in the younger age, will also be maintained.…”

Section: Resultsmentioning

confidence: 99%

Modified Laminoplasty After Excision of Cervical Schwannoma With Large Extravertebral Extension

Faris¹,

Bajamal²,

Bajamal³

et al. 2018

nsmc

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Tumour excision and laminoplasty are commonly performed as surgical treatment of extra vertebral extension of cervical schwannoma. It is worth knowing that the conventional technique of multilevel laminectomy may hinder younger patients in the long-term. This article reports a 30-year old man with an intradural-extramedullary tumour which extended from C4 to T1 that underwent modified laminoplasty. This modified technique is preferable in maintaining the anteroposterior diameter of spinal canal as well as reducing the displacement of guttered laminae

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Cervical Unilateral Open-Door Laminoplasty With Titanium Miniplates Through Newly Designed Hydroxyapatite Spacers -Technical Note-

Cited by 10 publications

References 16 publications

Clinical Application of a New Plate Fixation System in Open-door Laminoplasty

Clinical Application of a New Plate Fixation System in Open-door Laminoplasty

Modified Open-door Laminoplasty Using Hydroxyapatite Spacers and Miniplates

Modified Laminoplasty After Excision of Cervical Schwannoma With Large Extravertebral Extension

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