Dash-Associated Spondylolysis Hypothesis

Goto, Tsuyoshi; Sakai, Toshinori; Sugiura, Kosuke; Manabe, Hiroaki; Morimoto, Masatoshi; Tezuka, Fumiaki; Yamashita, Kazuo; Takata, Yoichiro; Chikawa, Takashi; Katoh, Shinsuke; Sairyo, Koichi

doi:10.22603/ssrr.2018-0020

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…First, wearing of a hard brace could not fully protect the patient against the mechanical load generated by activities of daily living, such as running or cycling. Goto et al 17) recently reported that sprinting increases the hip extension angle, spine rotation angle, and hip flexion moment, and can be a risk factor for LS. Furthermore, our patient was a Japanese elementary school student, and so the load generated by carrying the traditional heavy Japanese school backpack ( randoseru ) every day might have caused mechanical stress on the lumbar spine.…”

Section: Discussionmentioning

confidence: 99%

Spontaneous Laminar Fracture during Successful Conservative Treatment of Lumbar Spondylolysis at the Adjacent Spinal Level: A Case Report

Manabe

Sakai

Sugiura

et al. 2020

NMC Case Report Journal

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Although lumbar spondylolysis (LS) is regarded as a stress fracture, the underlying pathomechanism has yet to be fully elucidated. Here, we present a case that casts doubt on the notion that LS is truly a stress fracture. An 11-year-old female basketball player was brought to our clinic with a 2-week history of persistent low back pain. Magnetic resonance imaging with short TI inversion recovery (STIR-MRI) showed high signal intensity changes at the L4 pedicles bilaterally. Computed tomography (CT) revealed a faint fracture line at the left pars interarticularis. We made a diagnosis of stress fracture and recommended conservative treatment, including cessation of sports activities and wearing of a hard brace. Compliance with treatment was excellent. As expected, the STIR-MRI findings at L4 gradually resolved and bone healing was achieved. However, a follow-up STIR-MRI scan 10 weeks later revealed high signal intensity at the left L5 pedicle. Conservative treatment was continued for the findings at L5, which were considered to indicate a stress fracture (spondylolysis). Five weeks later, CT revealed a bony defect in the lamina at L5 on the left and bone union at L4. Although LS is generally considered to be a stress fracture, there have been several reports of familial occurrence and genetic predisposition. This patient’s mother had also been treated for spondylolysis at L5. These observations suggest an underlying genetic etiology in this case.

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Section: Discussionmentioning

confidence: 99%

Spontaneous Laminar Fracture during Successful Conservative Treatment of Lumbar Spondylolysis at the Adjacent Spinal Level: A Case Report

Manabe

Sakai

Sugiura

et al. 2020

NMC Case Report Journal

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Optical Marker-Based Motion Capture of the Human Spine: A Scoping Review of Study Design and Outcomes

Romero-Flores,

Bustamante-Bello,

Moya Bencomo

et al. 2024

Ann Biomed Eng

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Biomechanical analysis of the human spine is crucial to understanding injury patterns. Motion capture technology has gained attention due to its non-invasive nature. Nevertheless, traditional motion capture studies consider the spine a single rigid segment, although its alignment changes during movement. Moreover, guidelines that indicate where markers should be placed for a specific exercise do not exist. This study aims to review the methods used to assess spine biomechanics using motion capture systems to determine the marker sets used, the protocols used, the resulting parameters, the analysed activities, and the characteristics of the studied populations. PRISMA guidelines were used to perform a Scoping Review using SCOPUS and Web of Science databases. Fifty-six journal and conference articles from 1997 to 2023 were considered for the analysis. This review showed that Plug-in-Gait is the most used marker set. The lumbar spine is the segment that generates the most interest because of its high mobility and function as a weight supporter. Furthermore, angular position and velocity are the most common outcomes when studying the spine. Walking, standing, and range of movement were the most studied activities compared to sports and work-related activities. Male and female participants were recruited similarly across all included articles. This review presents the motion capture techniques and measurement outcomes of biomechanical studies of the human spine, to help standardize the field. This work also discusses trends in marker sets, study outcomes, studied segments and segmentation approaches. Graphical Abstract

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Clinical characteristics of early-stage lumbar spondylolysis detected by magnetic resonance imaging in male adolescent baseball players

Kato

Otoshi

Kono

et al. 2024

Journal of Orthopaedic Science

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Dash-Associated Spondylolysis Hypothesis

Abstract: 1Purpose: In past biomechanical studies, repetitive motion of lumbar extension, rotation, 2 or a combination of both, frequently seen in batting or pitching practice in baseball, 3 shooting practice in soccer, and spiking practice in volleyball, have been considered 4

Cited by 5 publications

References 16 publications

Spontaneous Laminar Fracture during Successful Conservative Treatment of Lumbar Spondylolysis at the Adjacent Spinal Level: A Case Report

Spontaneous Laminar Fracture during Successful Conservative Treatment of Lumbar Spondylolysis at the Adjacent Spinal Level: A Case Report

Optical Marker-Based Motion Capture of the Human Spine: A Scoping Review of Study Design and Outcomes

Clinical characteristics of early-stage lumbar spondylolysis detected by magnetic resonance imaging in male adolescent baseball players

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