PT  - JOURNAL ARTICLE
AU  - Eguchi, Yawara
AU  - Suzuki, Munetaka
AU  - Yamanaka, Hajime
AU  - Tamai, Hiroshi
AU  - Kobayashi, Tatsuya
AU  - Orita, Sumihisa
AU  - Narita, Miyako
AU  - Inage, Kazuhide
AU  - Kanamoto, Hirohito
AU  - Abe, Koki
AU  - Inoue, Masahiro
AU  - Norimoto, Masaki
AU  - Umimura, Tomotaka
AU  - Sato, Takashi
AU  - Aoki, Yasuchika
AU  - Watanabe, Atsuya
AU  - Koda, Masao
AU  - Furuya, Takeo
AU  - Nakamura, Junichi
AU  - Toyone, Tomoaki
AU  - Ozawa, Tomoyuki
AU  - Akazawa, Tsutomu
AU  - Takahashi, Kazuhisa
AU  - Ohtori, Seiji
TI  - Myovascular Preserving Open-Door Laminoplasty for Cervical Spondylotic Myelopathy With Miniplate Fixation
AID  - 10.14444/7062
DP  - 2020 Jul 01
TA  - International Journal of Spine Surgery
PG  - 7062
4099  - https://www.ijssurgery.com/content/early/2020/07/27/7062.short
4100  - https://www.ijssurgery.com/content/early/2020/07/27/7062.full
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.