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Peripheral Lesions of the Triangular Fibrocartilage Complex.

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The CUP classification aids in categorizing triangular fibrocartilage complex (TFCC) injuries. This review focuses on peripheral TFCC lesions, detailing their anatomy and common imaging findings.

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Area of Science:

  • Orthopedic Surgery
  • Radiology
  • Anatomy

Background:

  • The triangular fibrocartilage complex (TFCC) is crucial for wrist stability.
  • The recently introduced CUP classification categorizes TFCC lesions into central (C), ulnar (U), and peripheral (P) types.
  • Peripheral TFCC lesions involve specific anatomical structures and can occur independently or with other injuries.

Purpose of the Study:

  • To illustrate typical peripheral triangular fibrocartilage complex lesions using the CUP classification.
  • To review the anatomical components of the peripheral TFCC.
  • To discuss imaging modalities for peripheral TFCC lesions.

Main Methods:

  • Pictorial review of peripheral TFCC lesions.
  • Correlation with the CUP classification system.
  • Description of relevant anatomy and pathology.

Main Results:

  • Peripheral TFCC lesions commonly affect the meniscus homologue and dorsal capsule.
  • Imaging techniques like MRI and CT/MR arthrography are utilized for assessment.
  • Arthroscopic evaluation of peripheral lesions has limitations.

Conclusions:

  • Peripheral TFCC lesions have distinct anatomical considerations.
  • Radiologic assessment is key for diagnosing peripheral TFCC injuries.
  • Further data on the clinical relevance of radiologic reporting is needed.