Open AccessRelationship of actual laminoplasty opening size and increment of the cross-sectional area based on single-door cervical laminoplasy
Author(s) -
Xuan Yang,
Ruijun Tian,
Xing Su,
Shanbo Hu,
Wei Lei,
Yang Zhang
Publication year - 2018
Publication title -
medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.59
H-Index - 148
eISSN - 1536-5964
pISSN - 0025-7974
DOI - 10.1097/md.0000000000010216
Subject(s) - medicine , cross sectional study , laminoplasty , orthodontics , reliability (semiconductor) , surgery , laminectomy , spinal cord , power (physics) , physics , pathology , quantum mechanics , psychiatry
Background: Amounts of clinic research have been performed to investigate the increment of cross-sectional area in single-door cervical laminoplasty (SDCL). However, no one has taken the effects of surgery drill into consideration. Methods: A mathematical model was built to investigate the relation of actual laminoplasty opening size (LOS), the transverse canal diameter (TCD), and the increment of cross-sectional area in SDCL). The model was based on geometric analysis on deformation of spinal canal; the relation was derived and characterized as: , where a is the TCD, b the actual LOS, c the size of mini-plate, and d is diameter of the surgery drill bit. In the equation, the related variables would be measured to estimate the increment of cross-sectional area before the surgery. In the current research, 25 patients authorized to use their CT scans of C3∼C7 as the subject samples. Results: The effects of surgery SDCL were very significant; for each patient, the cross-sectional area was enlarged dramatically after the surgery ( P < .01). On the contrary, the difference between the cross-sectional area obtained by the equation and that measured by software was statistically negligible ( P > .05), which confirmed the reliability of the modeling equation. Conclusions: Before the SDCL, increment of the cross-sectional area can be estimated by the above-mentioned modeling equation with a high-level reliability. This method ensures the optimum selection of mini-plate before operation for each patient.