Simplified S1 vertebral bone quality score independently predicts proximal junctional kyphosis after surgery for degenerative lumbar scoliosis
- Resource Type
- article
- Authors
- Wei Deng; Yue Zhou; Qingsong Zhou; Yong Yin; Yueming Song; Ganjun Feng
- Source
- Journal of Orthopaedic Surgery and Research, Vol 19, Iss 1, Pp 1-8 (2024)
- Subject
- Proximal junctional kyphosis
Scoliosis
Vertebral bone quality
Bone mineral density
Orthopedic surgery
RD701-811
Diseases of the musculoskeletal system
RC925-935
- Language
- English
- ISSN
- 1749-799X
Abstract Objective Our study aimed to assess the effectiveness of the simplified S1 vertebral bone quality (VBQ) score in predicting the incidence of proximal junctional kyphosis (PJK) after surgery for degenerative lumbar scoliosis (DLS). Methods We reviewed 122 patients with DLS who underwent posterior lumbar decompression and long-segment fusion surgery in our hospital from January 2016 to December 2020. The patients were classified into PJK group and non-PJK group. S1 VBQ scores are determined by signal intensity measurements taken from the mid-sagittal plane of T1-weighted non-contrast MRI. Logistic regression analysis was used to identify factors associated with PJK. Receiver-operating characteristic curve (ROC) analysis was used to evaluate the value of S1 VBQ score in predicting pedicle PJK after DLS. Results 122 DLS patients (90 females and 32 males) met the inclusion criteria. In addition, 27 patients (22.13%) had PJK at the time of last follow-up. VBQ was higher in PJK patients than non-PJK patients (3.58 ± 0.67 vs. 3.08 ± 0.54, p