Walking performance in individuals with lumbar spinal stenosis- possible outcome measures and assessment of known-group validity
One of the primary goals of treatments received by individuals with lumbar spinal stenosis with neurogenic claudication is to improve walking ability. Thus, a thorough and valid assessment of walking ability in patients with lumbar spinal stenosis is needed. Duration of continuous walking and steps per day could be relevant when evaluating walking ability in daily living. (Source: The Spine Journal)
Source: The Spine Journal - March 16, 2024 Category: Orthopaedics Authors: Malin Eleonora av K ák Gustafsson, Berit Schiøttz-Christensen, Therese Lockenwitz Petersen, Randi Jepsen, Niels Wedderkopp, Jan Christian Brønd, Søren Francis Dyhrberg O'Neill Tags: Clinical Study Source Type: research

Left-Digit Bias in Surgical Decision-Making for Lumbar Spinal Stenosis
Left-digit bias is a behavioral heuristic or cognitive “shortcut” in which the leftmost digit of a number, such as patient age, disproportionately influences surgical decisions. (Source: The Spine Journal)
Source: The Spine Journal - March 16, 2024 Category: Orthopaedics Authors: Izzet Akosman, Karim Shafi, Tejas Subramanian, Gregory S. Kazarian, Austin C. Kaidi, Matthew Cunningham, Han Jo Kim, Francis Lovecchio Tags: Clinical Study Source Type: research

Forcefully Engaging Rods into Tulips with Gap Discrepancy Leading to Pedicle Screw Loosening – A Biomechanical Analysis Using Long Porcine Spine Segments
Long-segment pedicle screw instrumentation is widely used to treat complex spinal disorders. Rods are routinely precontoured to maximize assistance on the correcting side of the deformity, but there often exists a residual gap discrepancy between the precontoured rods and screw tulips. No previous research has investigated the diminished pullout strength of the most proximal or distal pedicle screw resulting from a mismatched rod in long-segment pedicle screw instrumentation. (Source: The Spine Journal)
Source: The Spine Journal - March 16, 2024 Category: Orthopaedics Authors: Ming-Kai Hsieh, De-Mei Lee, Weng-Pin Chen, Yun-Da Li, Fu-Cheng Kao, Yue-Chen Lin, Tsung-Ting Tsai, Po-Liang Lai, Ching-Lung Tai Tags: Basic Science Source Type: research

Imaging Predictors of Progression of Lumbar Spondylolysis to Spondylolisthesis: A Systematic Review
Isthmic spondylolisthesis (IS) is defined as the anterior translation of one lumbar vertebra relative to the next caudal segment as a result of a unilateral or bilateral fracture of the pars interarticularis. These fractures are interchangeably known as “pars defects” or “spondylolysis”. Many risk factors have been proposed to explain the progression of a spondylolytic defect to IS, however, none are validated. (Source: The Spine Journal)
Source: The Spine Journal - March 16, 2024 Category: Orthopaedics Authors: Stone Sima, Xiaolong Chen, Kyle Sheldrick, Allen Lu, Ashish D. Diwan Tags: Systematic Review / Meta-Analysis Source Type: research

Mental health after lumbar spine surgery: Cognitive appraisal processes and outcome in a longitudinal cohort study
: A not uncommon finding following spine surgery is that many patients do not achieve mental health improvement up to population norms for their age cohort, despite improvement in pain and functioning. (Source: The Spine Journal)
Source: The Spine Journal - March 12, 2024 Category: Orthopaedics Authors: Carolyn E. Schwartz, Katrina Borowiec, Sara Aman, Bruce D. Rapkin, Joel A. Finkelstein Tags: Clinical Study Source Type: research

MRI-based vertebral bone quality score in cervical ossification of the posterior longitudinal ligament-A comparison with cervical spondylotic myelopathy using propensity score matching
Bone mineral density plays a key role in the assessment of operative instrumentation complications and clinical outcomes. The MRI-based vertebral bone quality (VBQ) score has been introduced as a novel marker of bone quality. However, few studies have investigated the relationship between VBQ score and patients associated with cervical ossification of the posterior longitudinal ligament (OPLL). (Source: The Spine Journal)
Source: The Spine Journal - March 4, 2024 Category: Orthopaedics Authors: Minming Lu, Yifan Tang, Xiangwu Geng, Changjiang Gu, Yin Zhao, Xiongsheng Chen Tags: Clinical Study Source Type: research

A new animal model of lumbar disc degeneration in rabbits
There are many models of lumbar disc degeneration, but mechanical stress-induced lumbar disc degeneration is rare. Here we propose a mechanical stress-induced lumbar disc degeneration model to better understand the molecular mechanism of lumbar disc degeneration under stress stimulation. (Source: The Spine Journal)
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Yao Teng, Gao Jun, You Chenan, Xu Yining, Qiao Di, Shen Shuying, Ma Jianjun Tags: Basic Science Source Type: research

Comparison of facet fusion rates and clinical outcomes between cortical bone trajectory screw and percutaneous pedicle screw fixation for degenerative lumbar spondylolisthesis
Cortical bone trajectory (CBT) screws have been introduced as an alternative technique for pedicle screw (PS) insertion because they have greater contact with the cortex and a greater uniaxial pullout load than traditional PS [1,2]. CBT screwing can also minimize muscle dissection [3]. As a minimally invasive evolution of posterolateral fusion, we discovered that facet fusion (FF) using a percutaneous PS (PPS) inserted through the fascia (PPS-FF) produced positive clinical outcomes for degenerative lumbar spondylolisthesis (DLS) [4]. (Source: The Spine Journal)
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Tomohiro Miyashita, Kei Kato, Atsushi Yunde, Hiromi Ataka, Takaaki Tanno Tags: Clinical Study Source Type: research

Using Advanced Imaging to Measure Bone Density, Compression Fracture Risk, and Risk for Construct Failure after Spine Surgery
Low bone mineral density (BMD) can predispose to vertebral body compression fractures and postoperative instrumentation failure. DEXA is considered the gold standard for measurement of BMD, however it is not obtained for all spine surgery patients preoperatively. There is a growing body of evidence suggesting that more routinely acquired spine imaging studies such as computed tomography (CT) and magnetic resonance imaging (MRI) can be opportunistically used to measure BMD. Here we review available studies that assess the validity of opportunistic screening with CT-derived Hounsfield Units (HU) and MRI-derived vertebral von...
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Nicole D. Agaronnik, Carew Giberson-Chen, Christopher M. Bono Tags: Narrative Review Source Type: research

Elevated Blood Metal Ion Levels in Patients Undergoing Instrumented Spinal Surgery: A Systematic Review and Meta-Analysis
Spinal instrumentation and placement of metallic implants, is a common surgical treatment for correcting deformities and achieving fusion across multiple spinal levels [1]. However, concerns arise about the potential long-term adverse effects of maintaining these metallic implants, as evidence accumulates regarding the presence of metals in the body after implantation. “The association between clinical and radiographic outcomes remain uncertain but is concerning” [2]. (Source: The Spine Journal)
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Jes ús Burgos, Eduardo Hevia, Ignacio Sanpera, Vicente García, María Teresa de Santos Moreno, Gonzalo Mariscal, Carlos Barrios Tags: Systematic Review / Meta-Analysis Source Type: research

Spine-Specific Sarcopenia: Distinguishing Paraspinal Muscle Atrophy from Generalized Sarcopenia
Atrophy of the paraspinal musculature (PM) as well as generalized sarcopenia are increasingly reported as important parameters for clinical outcomes in the field of spine surgery. Despite growing awareness and potential similarities between both conditions, the relationship between “generalized” and “spine-specific” sarcopenia is unclear. (Source: The Spine Journal)
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Lukas Sch önnagel, Erika Chiaparelli, Gaston Camino-Willhuber, Jiaqi Zhu, Thomas Caffard, Soji Tani, Marco D. Burkhard, Michael Kelly, Ali E. Guven, Jennifer Shue, Andrew A. Sama, Federico P. Girardi, Frank P. Cammisa, Alexander P. Hughes Tags: Clinical Study Source Type: research

Spinal Malalignment: The Rationale for Updated Terminology for Patients with Spinal Deformity
Spinal malalignment occurs when the contour of the spine is pathologically altered in at least one plane (sagittal, coronal, or axial). There exists a wide array of these common conditions which often have a profound impact on patients ’ quality of life.[1] The prevalence of scoliosis, for instance, is estimated at 1-3% among adolescents and up to 68% in patients over the age of 65.[2,1] Patients with spinal malalignment, often described as having “spinal deformities,” are sometimes disparaged or even demonized as in Victor Hugo's The Hunchback of Notre Dame (Figure 1). (Source: The Spine Journal)
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Alan H. Daniels, Mariah Balmaceno-Criss, Sarah L. Criddle, Adrian Deck, Mohammad Daher, Eli Y. Adashi, Bassel G. Diebo Tags: Perspective Source Type: research

The Mechanical Properties of the Spinal Cord: A Systematic Review
Spinal cord compression is a source of pathology routinely seen in clinical practice. However, there remain unanswered questions surrounding both the understanding of the pathogenesis and the best method of treatment. This arises from limited real-life testing of the mechanical properties of the spinal cord, either through cadaveric human specimens or animal testing, both of which suffer from methodological, as well as ethical, issues. (Source: The Spine Journal)
Source: The Spine Journal - March 1, 2024 Category: Orthopaedics Authors: Megan Stanners, Marguerite O'Riordan, Eirini Theodosiou, Jean-Baptiste R.G. Souppez, Adrian Gardner Source Type: research

Investigating the Associations between Lumbar Paraspinal Muscle Health and Age, BMI, Sex, Physical Activity and Back Pain using an Automated Computer-Vision Model: A UK Biobank Study
The role of lumbar paraspinal muscle health in back pain (BP) is not straightforward. Challenges in this field have included the lack of tools and large, heterogenous datasets to interrogate the association between muscle health and BP. Computer-vision models have been transformative in this space, enabling the automated quantification of muscle health and the processing of large datasets. (Source: The Spine Journal)
Source: The Spine Journal - February 27, 2024 Category: Orthopaedics Authors: EO Wesselink, A Pool-Goudzwaard, B De Leener, CSW Law, MB Fenyo, GM Ello, MW Coppieters, JM Elliott, S Mackey, KA Weber Tags: Clinical Study Source Type: research

Anterior Cervical Discectomy and Fusion Versus Cervical Disc Arthroplasty: An Epidemiological Review of 433,660 Surgical Patients from 2011-2021
Anterior cervical discectomy and fusion (ACDF) and cervical disc arthroplasty (CDA) are commonly performed operations to address cervical radiculopathy and myelopathy. Trends in utilization and revision surgery rates warrant investigations. (Source: The Spine Journal)
Source: The Spine Journal - February 24, 2024 Category: Orthopaedics Authors: Manjot Singh, Mariah Balmaceno-Criss, George Anderson, Kanwar Parhar, Mohamad Daher, Jerzy Gregorczyk, Jonathan Liu, Christopher L. McDonald, Bassel G. Diebo, Alan H. Daniels Tags: Clinical Study Source Type: research