Classification of ulnar triangular fibrocartilage complex tears. A treatment algorithm for Palmer type IB tears

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Anatomy

Background:

• The Palmer Type IB classification for triangular fibrocartilage complex tears encompasses diverse clinical presentations.
• A need exists for a refined classification system to guide treatment strategies.

Purpose of the Study:

• To present a treatment-oriented classification system for peripheral triangular fibrocartilage complex tears.
• To delineate five distinct classes of these tears based on clinical and arthroscopic criteria.

Main Methods:

• Review of clinical and arthroscopic criteria for categorizing tears.
• Development of a five-class system for Palmer Type IB tears.
• Correlation of tear characteristics with treatment options.

Main Results:

• Class 1: Isolated distal tears, treated with arthroscopic suture.
• Class 2 & 3: Tears involving proximal attachments, diagnosed by hook test, treated with reattachment.
• Class 4: Irreparable tears, treated with reconstruction; Class 5: Arthritis, treated with salvage procedures.

Conclusions:

• The proposed five-class system refines the understanding of triangular fibrocartilage complex tears.
• This classification aids in determining appropriate surgical and non-surgical interventions.
• It offers insights into pathomechanics and optimizes treatment strategies for distal radio-ulnar joint instability.