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Novel Screw Insertion Method for Anterior Surgical Treatment of Unstable Thoracolumbar Fracture: Quadrant Positioning Method.
Orthop Surg 2019; 11(4):613-619OS

Abstract

OBJECTIVE

To develop a novel screw positioning method to improve the treatment of unstable thoracolumbar fractures.

METHODS

A total of 72 patients with unstable thoracolumbar fractures who were treated with anterior screw-rod interfixation from January 2011 to October 2015 were included in this clinical study. Those patients included 48 male and 24 female patients with an average age of 45.10 years (range, 26-63 years). Patients were randomly divided into two groups: an observation group (n = 36) and a control group (n = 36). The quadrant positioning method was used for screw insertion in the observation group during the operation, while the traditional screw positioning method was used in the control group. The quadrant positioning method targeted four quadrants, including the superior anterior (SA), superior posterior (SP), inferior anterior (IA) and inferior posterior (IP) quadrants, while for the traditional screw positioning, four screws were inserted into the vertebral bodies above and below the excision. Patients were followed up for approximately 40 months to record recovery. Clinical and radiological records, local angle and fractured vertebra body height, clinical outcomes, complications, neurological improvement, and fusion rate were recorded and compared between the two groups.

RESULTS

The quadrant positioning method was successfully used for anterior screw insertion. The quadrant center in the lateral view of the vertebral body was well marked, and screws were easily located on the scheduled quadrant. Blood loss (BL), hospital stay (HS), and operation time (OP) in the observation group were 749.40 ± 379.90 mL, 17.10 ± 4.10 days, and 167.40 ± 44.70 min, respectively. While those parameters in the control group were 1198.40 ± 339.27 mL, 23.22 ± 3.77 days, and 221.47 ± 32.15 min, respectively. The average operation time and hospital stay time were significantly shorter, and blood loss was significantly less in the observation group than in the control group (P < 0.05). Local angle and vertebral body height were markedly improved and 1-2 grade improvement was achieved in patients with neurological deficits in both groups. Both groups of patients achieved bony fusion during follow-up. No incision infection or internal fixation failure was observed in the two groups, and complications including cerebrospinal fluid and chylous leakage and hemothorax were resolved.

CONCLUSIONS

The quadrant positioning method can shorten operation time, reduce blood loss, and accelerate postoperative recovery. The technique provides an effective method for screw insertion for double screw-rod instrumentation fixation in the treatment of thoracolumbar fracture via the anterior approach.

Authors+Show Affiliations

Department of Spine Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China.School of Basic Medical Sciences, Southwest Medical University, Luzhou, China.Department of Spine Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China.Department of Spine Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China.Department of Spine Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31387160

Citation

Wang, Song, et al. "Novel Screw Insertion Method for Anterior Surgical Treatment of Unstable Thoracolumbar Fracture: Quadrant Positioning Method." Orthopaedic Surgery, vol. 11, no. 4, 2019, pp. 613-619.
Wang S, Duan CY, Yang H, et al. Novel Screw Insertion Method for Anterior Surgical Treatment of Unstable Thoracolumbar Fracture: Quadrant Positioning Method. Orthop Surg. 2019;11(4):613-619.
Wang, S., Duan, C. Y., Yang, H., Kang, J. P., & Wang, Q. (2019). Novel Screw Insertion Method for Anterior Surgical Treatment of Unstable Thoracolumbar Fracture: Quadrant Positioning Method. Orthopaedic Surgery, 11(4), pp. 613-619. doi:10.1111/os.12506.
Wang S, et al. Novel Screw Insertion Method for Anterior Surgical Treatment of Unstable Thoracolumbar Fracture: Quadrant Positioning Method. Orthop Surg. 2019;11(4):613-619. PubMed PMID: 31387160.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Novel Screw Insertion Method for Anterior Surgical Treatment of Unstable Thoracolumbar Fracture: Quadrant Positioning Method. AU - Wang,Song, AU - Duan,Chun-Yan, AU - Yang,Han, AU - Kang,Jian-Ping, AU - Wang,Qing, Y1 - 2019/08/06/ PY - 2019/01/18/received PY - 2019/05/20/revised PY - 2019/06/20/accepted PY - 2019/8/7/pubmed PY - 2019/8/7/medline PY - 2019/8/7/entrez KW - Anterior approach KW - Quadrant method KW - Screw positioning KW - Thoracolumbar fracture SP - 613 EP - 619 JF - Orthopaedic surgery JO - Orthop Surg VL - 11 IS - 4 N2 - OBJECTIVE: To develop a novel screw positioning method to improve the treatment of unstable thoracolumbar fractures. METHODS: A total of 72 patients with unstable thoracolumbar fractures who were treated with anterior screw-rod interfixation from January 2011 to October 2015 were included in this clinical study. Those patients included 48 male and 24 female patients with an average age of 45.10 years (range, 26-63 years). Patients were randomly divided into two groups: an observation group (n = 36) and a control group (n = 36). The quadrant positioning method was used for screw insertion in the observation group during the operation, while the traditional screw positioning method was used in the control group. The quadrant positioning method targeted four quadrants, including the superior anterior (SA), superior posterior (SP), inferior anterior (IA) and inferior posterior (IP) quadrants, while for the traditional screw positioning, four screws were inserted into the vertebral bodies above and below the excision. Patients were followed up for approximately 40 months to record recovery. Clinical and radiological records, local angle and fractured vertebra body height, clinical outcomes, complications, neurological improvement, and fusion rate were recorded and compared between the two groups. RESULTS: The quadrant positioning method was successfully used for anterior screw insertion. The quadrant center in the lateral view of the vertebral body was well marked, and screws were easily located on the scheduled quadrant. Blood loss (BL), hospital stay (HS), and operation time (OP) in the observation group were 749.40 ± 379.90 mL, 17.10 ± 4.10 days, and 167.40 ± 44.70 min, respectively. While those parameters in the control group were 1198.40 ± 339.27 mL, 23.22 ± 3.77 days, and 221.47 ± 32.15 min, respectively. The average operation time and hospital stay time were significantly shorter, and blood loss was significantly less in the observation group than in the control group (P < 0.05). Local angle and vertebral body height were markedly improved and 1-2 grade improvement was achieved in patients with neurological deficits in both groups. Both groups of patients achieved bony fusion during follow-up. No incision infection or internal fixation failure was observed in the two groups, and complications including cerebrospinal fluid and chylous leakage and hemothorax were resolved. CONCLUSIONS: The quadrant positioning method can shorten operation time, reduce blood loss, and accelerate postoperative recovery. The technique provides an effective method for screw insertion for double screw-rod instrumentation fixation in the treatment of thoracolumbar fracture via the anterior approach. SN - 1757-7861 UR - https://www.unboundmedicine.com/medline/citation/31387160/Novel_Screw_Insertion_Method_for_Anterior_Surgical_Treatment_of_Unstable_Thoracolumbar_Fracture:_Quadrant_Positioning_Method L2 - https://doi.org/10.1111/os.12506 DB - PRIME DP - Unbound Medicine ER -