Lumbar Spine Anatomy in Supine versus Weight- Bearing Magnetic Resonance Imaging: Detecting Significant Positional Changes and Testing Reliability of Quantification

Mahato, Niladri Kumar; Maharaj, Paramanand; Clark, Brian C.

doi:10.31616/asj.2023.0203

Cited by 2 publications

References 30 publications

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High intensity in interspinous ligaments: a diagnostic sign of lumbar instability and back pain for degenerative lumbar spondylolisthesis

jiang,

Chen,

Huang

et al. 2024

Preprint

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Background: To investigate the clinical significance of high intensity in interspinous ligaments at the affected segment in degenerative lumbar spondylolisthesis (DLS), as well as to determine the most effective diagnostic modalities for evaluating segmental instability. Methods: This study reviewed a consecutive series of patients with L4/5 DLS between July 2023 and December 2023. The enrolled patients were divided into two groups based on the presence or absence of high intensity signals in interspinous ligaments: the higher group ( Group H), and non-higher group (Group NH). Translational and angular motion was determined by using flexion and extension (FE) radiographs or an sitting lumbar lateral radiograph with a supine sagittal MR image (combined, S-MR). Five-repetition sit-to-stand test (5R-STS) were employed to evaluate patients objective functional impairment (OFI). Results: Overall, 73 patients were enrolled in this study, and there were 22 (30.1%) patients in group H and 51(69.9%) patients in group NH, with an average age of 60.3 ± 8.1 years. The patients in Group H exhibited significantly longer 5R-STS times and serious OFI compared to those in Group NH. Compared to Group NH, Group H exhibited significantly higher SP in the sitting position (21.8% vs 16.7%; P < 0.001*), while no significant differences were observed in the upright, flexion, extension, and supine MRI positions (all P values > 0.05). In Group H,“instability” was recognized in 77.3 % of patients using S-MR versus 40.9 % patients using FE (P < 0.001); While in Group NH, no significant difference was observed in the incidence of“instability”between FE and s-MR (37.3% vs. 31.4%, P=0.53). Overall, a significantly higher incidence of instability was found in Group H compared to Group NH (77.3 % vs .37.3 %, P <0 .001*). Conclusions.DLS with a high intensity within the interspinous ligaments is a distinct subgroup associated with segmental instability, the combination of 5R-STS and S-MR should be regarded as the most clinically relevant approach for assessing OFI and lumbar instability.

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High intensity in interspinous ligaments: a diagnostic sign of lumbar instability and back pain for degenerative lumbar spondylolisthesis

jiang,

Chen,

Huang

et al. 2024

Preprint

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Trends in the Use of Weightbearing Computed Tomography

Bernasconi,

Dechir,

Izzo

et al. 2024

JCM

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Background: This review aimed to critically appraise the most recent orthopedic literature around cone beam weightbearing computed tomography (WBCT), summarizing what evidence has been provided so far and identifying the main research trends in the area. Methods: This scoping review was performed on studies published between January 2013 and December 2023 on the Pubmed database. All studies (both clinical and nonclinical) in which WBCT had been used were critically analyzed to extract the aim (or aims) of the study, and the main findings related to the role of this imaging modality in the diagnostic pathway. Results: Out of 1759 studies, 129 were selected. One hundred five manuscripts (81%) dealt with elective orthopedic conditions. The majority of the analyses (88 studies; 84%) were performed on foot and ankle conditions, while 13 (12%) studies looked at knee pathologies. There was a progressive increase in the number of studies published over the years. Progressive Collapsing Foot Deformity (22 studies; 25%) and Hallux Valgus (19 studies; 21%) were frequent subjects. Twenty-four (19%) manuscripts dealt with traumatic conditions. A particular interest in syndesmotic injuries was documented (12 studies; 60%). Conclusions: In this review, we documented an increasing interest in clinical applications of weightbearing CT in the orthopedic field between 2013 and 2023. The majority of the analyses focused on conditions related to the foot and the ankle; however, we found several works investigating the value of WBCT on other joints (in particular, the knee).

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Lumbar Spine Anatomy in Supine versus Weight- Bearing Magnetic Resonance Imaging: Detecting Significant Positional Changes and Testing Reliability of Quantification

Cited by 2 publications

References 30 publications

High intensity in interspinous ligaments: a diagnostic sign of lumbar instability and back pain for degenerative lumbar spondylolisthesis

High intensity in interspinous ligaments: a diagnostic sign of lumbar instability and back pain for degenerative lumbar spondylolisthesis

Trends in the Use of Weightbearing Computed Tomography

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