Publications by authors named "N Lorentz"

Total hip and knee arthroplasties are among the most effective and widely performed procedures in modern medicine, providing substantial benefits to patients with end-stage osteoarthritis. These surgeries have transformed the treatment of degenerative joint disease, significantly enhancing functionality and quality of life for patients. Despite considerable advancements in surgical techniques and postoperative care, managing postoperative pain remains a major challenge, impacting both clinical recovery and patient satisfaction.

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Background: Adult cervical deformity (ACD) surgery is more frequently being performed in frail patients. Although surgical outcomes are largely successful, there remains significant risk of poor outcomes. The ideal length of fusion constructs in these patients remains debatable.

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Unlabelled: BACKGROUND  : The use of bone morphogenic protein (BMP-2) in adult spine deformity (ASD) surgery remains controversial more than two decades following its approval for clinical application in spine surgery. This study was performed to assess outcomes in patients undergoing ASD surgery with BMP application compared with a combination of bone marrow aspirate, cancellous bone chips and i-Factor.

Methods: This was a retrospective cohort study.

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Background: Transforaminal lumbar interbody fusion (TLIF) has become a common tool to achieve interbody fusion in lumbar spine surgery while avoiding the time, expense, and morbidity associated with an anterior approach. Nonexpandable (NE) devices have excellent fusion results but are limited to implant size by spinal anatomy; conversely, expandable implants have been associated with increased intraoperative subsidence. Dual-plane expandable (DPE) devices are theorized to have reduced subsidence risk, but DPE cages have not been directly compared to NE and single plane expandable (SPE) implants in vivo.

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Objective: The purpose of this study was to assess how various realignment strategies affect mechanical failure and clinical outcomes in pelvic incidence (PI)-stratified cohorts following adult spinal deformity (ASD) surgery.

Methods: Median and interquartile range statistics were calculated for demographics and surgical details. Further statistical analysis was used to define subsets within PI generating significantly different rates of mechanical failure.

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