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Higashigaito K, Pfirrmann CWA, Koch S, et al. Ligaments of the scapho-trapezial-trapezoidal joint: MR anatomy in asymptomatic and symptomatic individuals. Skeletal Radiol. 2021;51(3):637-647doi: 10.1007/s00256-021-03865-x.
Higashigaito, K., Pfirrmann, C. W. A., Koch, S., Graf, D., Schweizer, A., Nanz, D., & Rosskopf, A. B. (2022). Ligaments of the scapho-trapezial-trapezoidal joint: MR anatomy in asymptomatic and symptomatic individuals. Skeletal radiology, 51(3), 637-647. https://doi.org/10.1007/s00256-021-03865-x
Higashigaito, Kai, et al. "Ligaments of the scapho-trapezial-trapezoidal joint: MR anatomy in asymptomatic and symptomatic individuals." Skeletal radiology vol. 51,3 (2022): 637-647. doi: https://doi.org/10.1007/s00256-021-03865-x
Higashigaito K, Pfirrmann CWA, Koch S, Graf D, Schweizer A, Nanz D, Rosskopf AB. Ligaments of the scapho-trapezial-trapezoidal joint: MR anatomy in asymptomatic and symptomatic individuals. Skeletal Radiol. 2022 Mar;51(3):637-647. doi: 10.1007/s00256-021-03865-x. Epub 2021 Jul 26. PMID: 34309690.
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Skeletal Radiol. 2022 Mar;51(3):637-647. doi: 10.1007/s00256-021-03865-x. Epub 2021 Jul 26.

Ligaments of the scapho-trapezial-trapezoidal joint: MR anatomy in asymptomatic and symptomatic individuals.

Skeletal radiology

Kai Higashigaito, Christian W A Pfirrmann, Sarah Koch, Dimitri Graf, Andreas Schweizer, Daniel Nanz, Andrea B Rosskopf

Affiliations

  1. Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland. [email protected].
  2. Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, University of Zurich, Raemistrasse 100, 8091, Zurich, Switzerland. [email protected].
  3. Radiology, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.
  4. MRI Medical Radiological Institute Zurich, Zurich, Switzerland.
  5. Handsurgery, Balgrist University Hospital, Forchstrasse 340, 8008, Zurich, Switzerland.
  6. Swiss Center for Musculoskeletal Imaging, Balgrist Campus AG, Zurich, Switzerland.
  7. ARISTRA, Radiology, Zurich, Switzerland.

PMID: 34309690 DOI: 10.1007/s00256-021-03865-x

Abstract

PURPOSE: To evaluate the MRI anatomy of the scapho-trapezial-trapezoidal (STT) ligament complex in asymptomatic and symptomatic individuals.

MATERIAL AND METHODS: In this retrospective study, STT ligament complex of 42 (male 69%, median age 37.5 years) asymptomatic (n = 25) and symptomatic (n = 17) (defined as pain described over the STT joint) individuals was examined using a high-resolution 3D proton density-weighted isovoxel sequence (MR arthrogram) with multiplanar reconstructions. Two musculoskeletal radiologists independently assessed visibility, signal intensity (SI), morphology, and thickness of the radiopalmar scapho-trapezial ligament (rpSTL), palmar scapho-capitate capsular ligament (pSCL), palmar STT capsule (pSTTC), and dorsal STT capsule (dSTTC).

RESULTS: Interreader agreement ranged from fair to good and intraclass correlations were good. The rpSTL was almost always visible (85.7%/80.1%; reader 1/reader 2). The pSCL and dSTTC were visible in all cases. The pSTTC was visible in only 52.4%/42.9%. Mean thickness of the rpSTL, pSCL, pSTTC, and dSTTC was 1.4 ± 0.5 mm/1.3 ± 0.5 mm, 2.8 ± 0.7 mm/2.7 ± 0.6 mm, 0.5 ± 0.5 mm/0.4 ± 0.4 mm, and 0.5 ± 0.3 mm/0.3 ± 0.3 mm. Both readers rated SI of the rpSTL significantly more often as increased in the symptomatic group (increased SI in asymptomatic group: 20%/15%; symptomatic group: 56%/50%) (p-values < 0.005). For all other ligaments, no significant difference was observed for SI between symptomatic and asymptomatic group (p-values ranging between 0.188 and 0.890). For all other ligaments, no significant differences were observed regarding ligament visibility, morphology, and thickness (p-values ranging between 0.274 and 1.000).

CONCLUSION: The anatomy of the STT ligament complex can consistently be visualized on high-resolution 3D MRI. Increased signal intensity of rpSTL is significantly more frequent in patients with radial-sided wrist pain.

© 2021. The Author(s).

Keywords: Anatomy; MRI; STT ligament complex; Wrist

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