Oct 26 – Nov 1, 2026 · 23 new studies, 10 reviews · Spine archive · All weeks
The new Spine research The Reduction sent the week of Oct 26 – Nov 1, 2026, with the week’s most recent reviews, each with a one-line summary.
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In 163 patients, primary THA improved sagittal and coronal spinal imbalance and restored spinopelvic mobility at six months, suggesting hip-spine assessment should be dynamic rather than static.
In 56,897 lumbar decompression patients, severe obesity independently predicted higher 90-day episode costs ($34,569 vs. $27,816) and more complications, readmissions, and reoperations, supporting tailored management and risk-adjusted reimbursement.
In 474 adults with idiopathic scoliosis, Cobb angle was unrelated to pain intensity, while those who exercised reported about 1 point lower pain, suggesting pain tracks lifestyle more than curve magnitude.
In 22 preference-selected Lenke 3/4 AIS patients, selective thoracic fusion was followed by spontaneous improvement of the unfused lumbar curve at 1 year, with one revision (5%); not enough to set general selection criteria.
In 114 AIS patients, greater thoracic deformity tracked with smaller MRI lung volumes and worse pulmonary function, with inspiratory volume partly mediating this link; cross-sectional data cannot prove causation.
Over 5 years after single-level ACD, cervical lordosis increased with sex-specific compensatory patterns; alignment-pain associations appeared only early, suggesting restoring segmental lordosis may reduce early arm pain.
In 95 patients with 2- or 3-level ACDF using a cellular bone matrix, 5-factor fusion was 73% overall (CT showed 96% of levels fused), with significant pain and function improvement and few complications.
In 163 cervical laminoplasty patients, bladder dysfunction was common (123 patients) and linked to worse quality of life, but only 22% improved by 2 years, so it may merit weight when timing surgery.
A systematic review of 12 studies found lateralization and distalization shoulder angles correlate with acromial stress, scapular spine fractures, and deltoid stiffness but not with range of motion or outcome scores after reverse shoulder arthroplasty.
In 108 cervical laminoplasty patients, wider bone-cutting enlarged the canal but did not improve JOA recovery, and dural contact did not worsen outcomes, suggesting maximizing cut width adds little neurological benefit.
In 239 adults, Modic changes, especially with greater vertebral body involvement, were associated with chronic low back pain and higher pain intensity but not disability, and lifestyle and mental health factors did not modify this link.
A 30-year population-based cohort found territory-wide scoliosis screening was associated with a large, sustained decline in AIS reaching surgical threshold (HR 0.29), though conservative care advances likely contributed.
In 78 single-level lateral lumbar fusions, lateral decubitus and prone approaches had similar total cost, but a new supply-category Impact Score revealed differing cost drivers and wide surgeon variability in biologics use.
Among 338 patients with major complications after metastatic spine surgery, 21% died within 30 days; a six-predictor model (emergency surgery, smoking, albumin, dependence) discriminated moderately well (AUC 0.74) but needs external validation.
Longitudinal trajectories and determinants of urinary outcomes after spinal ependymoma surgery.
In 55 spinal ependymoma resections, urinary dysfunction peaked at discharge (20%) and improved to 12.7% by 12 months; subtotal resection and intraoperative neuromonitoring changes predicted early dysfunction, and early catheter dependency was not a poor prognostic sign.
In 239 postmenopausal women, higher parity and earlier menopause were associated with greater pelvic incidence-lumbar lordosis mismatch, which itself was linked to worse low back pain.
In 170 single-level ACDF patients, MRI-based VBQ metrics predicted cage subsidence (39% incidence), with the calibrated VBQ performing best (AUC 0.83) as a possible preoperative risk tool.
In 54 AIS patients, adding Schroth exercises to underarm bracing improved lateral (clavicle angle) but not medial shoulder imbalance, and only medial T1 tilt changes correlated with patient-perceived appearance.
Factors associated with gait recovery following surgery for degenerative cervical myelopathy.
In 59 DCM patients, gait speed and stride length improved by 6 months after surgery then plateaued; worse baseline gait predicted greater recovery, while older age blunted gains.
A Cost-Driver Analysis of Transforaminal Lumbar Interbody Fusions: A 10-Year Single-Center Analysis.
In 376 single-level TLIFs, implants made up about half of total cost, and expandable cages added roughly 25% to total cost versus static cages, making implant choice a cost-reduction target.
In thoracic AIS, an S1-LIV angle above 9.5 degrees carried fourfold higher odds of distal adding-on, and using it to choose the LIV could spare lumbar motion segments in about 20% without raising risk.
Evaluating reasoning-tuned large language models for clinical decision-making in spine surgery.
Eight spine surgeons rated OpenAI o1 and DeepSeek R1 on synthetic cases, with o1 scoring higher mainly in diagnostic accuracy and clarity; the advantage largely reflected presentation, and surgeon oversight remains essential.
In 339 adult spinal deformity fusions, the lower lordotic arch predicted postoperative sacral slope best when the T4-L1-hip axis was aligned, so surgical planning should target both.
This narrative review proposes organizing objective gait, balance, and neuromuscular measures into a functional framework for spine care, noting that only laboratory gait and balance testing are well supported and standardization and validation are still needed.
A review of 16 studies found significant ceiling effects in eight EOSQ-24 domains, so it may miss improvement in high-functioning early-onset scoliosis patients; objective pulmonary testing is advised.
Scoping review: artificial intelligence in patient education for scoliosis.
A scoping review of five studies found AI chatbots like ChatGPT show promise for scoliosis patient education, with good accuracy and user acceptance, but need clinician oversight and better tailoring of readability.
Comparative article weighing duraplasty added to bony decompression in traumatic cervical cord injury, contrasting its theoretical benefits for cord perfusion against risks like CSF leak and pseudomeningocele; evidence remains controversial.
Current Concepts of Sagittal Alignment in Adult Cervical Deformity.
Review of contemporary concepts in adult cervical deformity, covering upper and regional cervical alignment parameters and the shape and deformity classification systems.
The Evaluation, Prevention, and Management of Proximal Junctional Kyphosis and Failure.
This review covers evaluation, risk factors, prevention strategies, and surgical and nonsurgical management of proximal junctional kyphosis and failure after adult deformity surgery, noting prevention strategies still lack proven reliability.
Lumbar Spine Injuries in Recreational Athletes: A Review.
Review of lumbar spine injuries in recreational athletes (disk herniation, spondylolysis, disk degeneration), noting most do well with nonsurgical care, and surgery after failed conservative treatment allows return to sport.
Physical and Virtual Simulation in Spine Surgery Training.
This narrative review finds physical and virtual spine simulators consistently improve trainee skills like pedicle screw placement, speed, and confidence, but whether this yields better real-world surgical outcomes remains unproven.
Back pain in patients with macromastia: what a spine surgeon should know?
Review reminding spine surgeons that macromastia can cause neck and back pain, and that recognizing it and referring for breast reduction may avoid unnecessary spinal intervention.
Perioperative Nutritional Optimization in Spine Surgery.
This review explains how malnutrition worsens spine surgery outcomes, outlines ways to assess perioperative nutritional status, and notes optimization appears helpful but effective protocols still need further study.
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