[Classification and MR imaging of triangular fibrocartilage complex lesions]

Area of Science:

• Orthopedics
• Radiology
• Sports Medicine

Background:

• The triangular fibrocartilage complex (TFCC) is crucial for wrist stability.
• TFCC injuries often cause ulnar-sided wrist pain and can be challenging to diagnose.
• Accurate imaging is vital for effective management of TFCC injuries.

Purpose of the Study:

• To elucidate the magnetic resonance imaging (MRI) characteristics of triangular fibrocartilage complex (TFCC) injuries.
• To provide an imaging basis for the early diagnosis and treatment of TFCC injuries.
• To correlate MRI findings with surgical outcomes for TFCC injuries.

Main Methods:

• 200 patients with suspected TFCC injuries and 10 healthy volunteers underwent wrist MRI.
• MRI included coronal T1WI and PD-FS sequences in three planes.
• 67 surgically confirmed TFCC injuries were analyzed and classified using the Palmer classification.

Main Results:

• MRI effectively visualized TFCC anatomy and injury patterns.
• Traumatic injuries (n=52) and degenerative injuries (n=15) showed distinct MRI features.
• Specific signs like linear high signals for perforations and irregular high signals for avulsions were identified.

Conclusions:

• MRI accurately demonstrates TFCC anatomy and allows for injury classification.
• MRI findings are significant for guiding early diagnosis and treatment strategies for TFCC injuries.
• This study provides a comprehensive imaging basis for TFCC injury management.