title: Halo Gravity Traction Is Associated with Reduced Bone Mineral Density of Patients with Severe Kyphoscoliosis.
abstract: Background. Halo gravity traction (HGT) is one of the most commonly used perioperative techniques for the treatment of severe kyphoscoliosis. This study was to explore the influence of HGT on the BMD of these patients.Methods. Patients with severe kyphoscoliosis treated by preoperative HGT for at least 2 months were included. Patients' BMD were assessed by dual-energy X-ray absorptiometry at lumbar spine (LS, L2-L4) and femur neck (FN) of the nondominant side. The weight and duration of traction, as well as baseline characteristics, were recorded.Results. Twenty patients were recruited. The average traction duration was 77.9 ± 13.0 days while the mean traction weight was 39.9% ± 11.1% of total body weight. Remarkable decrease of BMD was observed at LS of 17 (85%) patients and at FN of 18 (90%) patients. After HGT, 75% of patients were found to have osteoporosis, the incidence of which was significantly higher than that before HGT (35%). The correlation analysis revealed BMD reduction was only significantly correlated with the traction duration.Conclusions. The current study showed that preoperative HGT can have obvious impact on the BMD. The BMD reduction is associated with traction duration, suggesting that long traction duration may bring more bone mineral loss.
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Xiao
authors.identifier: 0000-0001-6846-3042
authors.initials: X
authors.lastname: Han
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Weixiang
authors.initials: W
authors.lastname: Sun
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Qiu
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Leilei
authors.initials: L
authors.lastname: Xu
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Shifu
authors.initials: S
authors.lastname: Sha
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Benlong
authors.initials: B
authors.lastname: Shi
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Huang
authors.initials: H
authors.lastname: Yan
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, China.
authors.forename: Zezhang
authors.identifier: 0000-0001-8569-3595
authors.initials: Z
authors.lastname: Zhu
mesh_terms: D000293:Adolescent; D015519:Bone Density; D001915:Braces / Q000009:adverse effects*; D006112:Gravitation; D006801:Humans; D007738:Kyphosis / Q000175:diagnosis / Q000503:physiopathology* / Q000628:therapy*; D010024:Osteoporosis / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D014143:Traction / Q000009:adverse effects*