Retrospective observational study. There is no consensus to predict improvement of lower back pain (LBP) in lumbar spinal stenosis after decompression surgery. The aim of this study was to evaluate the improvement of LBP and analyze the preoperative predicting factors for residual LBP. We retrospectively reviewed 119 patients who underwent lumbar decompression surgery without fusion and had a minimum follow-up of 1 year. LBP was evaluated using the numerical rating scale (NRS), Japanese Orthopaedic Association Back Pain Evaluation Questionnaire (JOABPEQ) LBP score, and Roland-Morris Disability Questionnaire (RMDQ). All patients were divided into LBP improved group (group I) and LBP residual group (group R) according to the NRS score. Radiographic images were examined preoperatively and at the final follow-up. We evaluated spinopelvic radiological parameters and analyzed the differences between group I and group R. LBP was significantly improved after decompression surgery (LBP NRS, 5.7 vs 2.6, < .001; JOABPEQ LBP score, 41.3 vs 79.6, < .001; RMDQ, 10.3 vs 3.6, < .001). Of 119 patients, 94 patients were allocated to group I and 25 was allocated to group R. There was significant difference in preoperative thoracolumbar kyphosis between group I and group R. Most cases of LBP in lumbar spinal stenosis were improved after decompression surgery without fusion. Preoperative thoracolumbar kyphosis predicted residual LBP after decompression surgery.Most cases of LBP in lumbar spinal stenosis were improved after decompression surgery without fusion. Preoperative thoracolumbar kyphosis predicted residual LBP after decompression surgery. Retrospective study. The purpose of the study was to analyze the epidemiological parameters and associated factors after spinal cord injury (SCI) in children, in the last 14 years admitted at a tertiary care center (Indian Spinal Injury Centre [ISIC], New Delhi, India). The demographic and injury-related data was analyzed descriptively. The incidence, type, and level of injury were compared across the age groups using a χ test. Wherever appropriate, Fisher exact test was used. There were 1660 pediatric trauma cases admitted at ISIC from 2002 to 2015, where 204 cases presented with spine injuries. The average age of children sustaining spine injury was 15.69 years (3-18 years of range). There were 15 patients in the age group 0 to 9 years, 27 patients in the age group 10 to 14 years, and 162 patients in the age group 15 to 18 years. This difference in spine injury incidence among the age groups was statistically significant. Fall from height was a common mode of injury. In our sample, boys were 3 times more likely to be injured than girls. Burst fractures were common among the type of injuries. Our study confirms the predominance of cervical spine injury and the high incidence of multilevel contiguous with a lesser percentage of noncontiguous multilevel spinal involvement. SCIWORA (spinal cord injury without radiological abnormality) incidences were in a similar context to the literature available. There was a very low incidence of death. Neurological improvement was seen in 8 operated cases and 4 conservatively treated cases.Our study confirms the predominance of cervical spine injury and the high incidence of multilevel contiguous with a lesser percentage of noncontiguous multilevel spinal involvement. SCIWORA (spinal cord injury without radiological abnormality) incidences were in a similar context to the literature available. There was a very low incidence of death. Neurological improvement was seen in 8 operated cases and 4 conservatively treated cases. This was a retrospective review of prospectively collected data. Few studies have described the relationship between mental health and patient-reported outcome measures (PROMs) after minimally invasive spine surgery. Prior studies on open surgery included small cohorts with short follow-ups. Patients undergoing primary minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) for degenerative pathology were retrospectively reviewed and stratified by Short Form (SF-36) Mental Component Summary (MCS) low MCS (<50, n = 436) versus high MCS (≥50, n = 363). PROMs assessed were back pain, leg pain, North American Spine Society Neurogenic Symptoms, Oswestry Disability Index, SF-36 Physical Component Summary, and MCS. Satisfaction, expectation fulfilment, and return to work (RTW) rates also were recorded at 1 month, 3 months, 6 months, and 2 years. Preoperative MCS was 39.4 ± 8.6 and 58.5 ± 5.4 in the low and high MCS groups, respectively ( < .001). The low MCS group had significantly poorer preoperative PROMs and longer lengths of stay. Despite this, both groups achieved comparable PROMs from 3 months onward. The mean MCS was no longer significantly different by 3 months ( = .353). The low MCS group had poorer satisfaction ( = .022) and expectation fulfilment ( = .020) at final follow-up. RTW rates were initially lower in the low MCS group up to 3 months ( = .034), but the rates converged from 6 months onward. Despite poorer PROMs preoperatively, patients with poor baseline mental health still achieved comparable results from 3 months up to 2 years after MIS-TLIF. Preoperative optimization of mental health should still be pursued to improve satisfaction and prevent delayed RTW after surgery.Despite poorer PROMs preoperatively, patients with poor baseline mental health still achieved comparable results from 3 months up to 2 years after MIS-TLIF. Preoperative optimization of mental health should still be pursued to improve satisfaction and prevent delayed RTW after surgery. In vitro cadaveric biomechanical study. Biomechanically characterize a novel lateral lumbar interbody fusion (LLIF) implant possessing integrated lateral modular plate fixation (MPF). A human lumbar cadaveric (n = 7, L1-L4) biomechanical study of segmental range-of-motion stiffness was performed. read more A ±7.5 Nċm moment was applied in flexion/extension, lateral bending, and axial rotation using a 6 degree-of-freedom kinematics system. Specimens were tested first in an intact state and then following iterative instrumentation (L2/3) (1) LLIF cage only, (2) LLIF + 2-screw MPF, (3) LLIF + 4-screw MPF, (4) LLIF + 4-screw MPF + interspinous process fixation, and (5) LLIF + bilateral pedicle screw fixation. Comparative analysis of range-of-motion outcomes was performed between iterations. Key biomechanical findings (1) Flexion/extension range-of-motion reduction with LLIF + 4-screw MPF was significantly greater than LLIF + 2-screw MPF ( < .01). (2) LLIF with 2-screw and 4-screw MPF were comparable to LLIF with bilateral pedicle screw fixation in lateral bending and axial rotation range-of-motion reduction ( = 1.