RT Journal Article
SR Electronic
T1 Myovascular Preserving Open-Door Laminoplasty for Cervical Spondylotic Myelopathy With Miniplate Fixation
JF International Journal of Spine Surgery
JO Int J Spine Surg
FD International Society for the Advancement of Spine Surgery
SP 7062
DO 10.14444/7062
A1 Yawara Eguchi
A1 Munetaka Suzuki
A1 Hajime Yamanaka
A1 Hiroshi Tamai
A1 Tatsuya Kobayashi
A1 Sumihisa Orita
A1 Miyako Narita
A1 Kazuhide Inage
A1 Hirohito Kanamoto
A1 Koki Abe
A1 Masahiro Inoue
A1 Masaki Norimoto
A1 Tomotaka Umimura
A1 Takashi Sato
A1 Yasuchika Aoki
A1 Atsuya Watanabe
A1 Masao Koda
A1 Takeo Furuya
A1 Junichi Nakamura
A1 Tomoaki Toyone
A1 Tomoyuki Ozawa
A1 Tsutomu Akazawa
A1 Kazuhisa Takahashi
A1 Seiji Ohtori
YR 2020
UL http://ijssurgery.com//content/early/2020/07/27/7062.abstract
AB Objective Laminoplasty is an effective procedure for treating cervical spondylotic myelopathy. We conduct myovascular preserving open-door laminoplasty (MPLP) in combination with a laminoplasty plate to improve the stability of the enlarged lamina. We compare the details of the MPLP technique with conventional open-door laminoplasty.Methods We compared 25 cases of MPLP (mean age = 70.5, mean follow-up period = 19 months) with 15 controls who received conventional open-door laminoplasty using hydroxyapatite spacers (mean age = 74, mean follow-up period = 53 months). Regarding surgical outcomes, blood loss, operative time, Japanese Orthopaedic Association score, and postoperative visual analog score for neck pain were measured. Regarding image analysis, preoperative and postoperative range of motion (ROM), C2-7 angle, implant back out, hinge bone fusion time, presence or absence of hinge bone union failure, and posterior neck fat infiltration rate were evaluated.Results Operative time was significantly shorter for MPLP, and postoperative neck pain was significantly decreased. In image evaluation, %ROM was significantly increased in MPLP, but no difference in C2-7 angle existed between the 2 groups. Implant back out was not recognized in either group. In MPLP, the hinge union period was significantly shortened, and the postoperative fat infiltration rate was significantly decreased.Conclusions We were able to reduce neck pain after surgery by an approach entailing longitudinal splitting of the spinous processes. We were able to ensure shorter operation times due to cervical plates and better hinge bone fusion times due to initial stability.Level of Evidence 4.