PMID- 29561448 OWN - NLM STAT- MEDLINE DCOM- 20180503 LR - 20181114 IS - 1536-5964 (Electronic) IS - 0025-7974 (Print) IS - 0025-7974 (Linking) VI - 97 IP - 12 DP - 2018 Mar TI - Relationship of actual laminoplasty opening size and increment of the cross-sectional area based on single-door cervical laminoplasy. PG - e0216 LID - 10.1097/MD.0000000000010216 [doi] LID - e0216 AB - 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: (Equation is included in full-text article.), 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 approximately 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. FAU - Yang, Xiao-Jiang AU - Yang XJ AD - Department of Orthopaedic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi. FAU - Tian, Rui-Jun AU - Tian RJ AD - Department of Orthopaedic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi. FAU - Su, Xing AU - Su X AD - Chinese PLA General Hospital, Beijing, People's Republic of China. FAU - Hu, Shan-Bo AU - Hu SB AD - Department of Orthopaedic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi. FAU - Lei, Wei AU - Lei W AD - Department of Orthopaedic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi. FAU - Zhang, Yang AU - Zhang Y AD - Department of Orthopaedic Surgery, Xijing Hospital, The Fourth Military Medical University, Xi'an, Shaanxi. LA - eng PT - Journal Article PL - United States TA - Medicine (Baltimore) JT - Medicine JID - 2985248R RN - Ossification of the posterior longitudinal ligament of the spine SB - IM MH - Adult MH - Aged MH - Cervical Vertebrae/diagnostic imaging/*surgery MH - Female MH - Humans MH - Laminoplasty/*instrumentation/*methods MH - Male MH - Middle Aged MH - Models, Theoretical MH - Organ Size MH - Ossification of Posterior Longitudinal Ligament/diagnostic imaging/surgery MH - Spinal Cord Diseases/diagnostic imaging/surgery PMC - PMC5895317 COIS- The authors have no conflicts of interest to disclose. EDAT- 2018/03/22 06:00 MHDA- 2018/05/04 06:00 PMCR- 2018/03/23 CRDT- 2018/03/22 06:00 PHST- 2018/03/22 06:00 [entrez] PHST- 2018/03/22 06:00 [pubmed] PHST- 2018/05/04 06:00 [medline] PHST- 2018/03/23 00:00 [pmc-release] AID - 00005792-201803230-00043 [pii] AID - MD-D-17-07118 [pii] AID - 10.1097/MD.0000000000010216 [doi] PST - ppublish SO - Medicine (Baltimore). 2018 Mar;97(12):e0216. doi: 10.1097/MD.0000000000010216.