Wrist Osteoarthritis Patterns: Diagnosis and Imaging-Guided Management

Area of Science:

• Orthopedics
• Biomechanics
• Rheumatology

Background:

• Wrist osteoarthritis often develops secondary to ligamentous injury or fracture complications.
• Primary idiopathic degeneration is less common than secondary causes.
• Instability from stabilizer failure or scaphoid issues drives carpal collapse.

Purpose of the Study:

• To describe the biomechanical alterations leading to wrist osteoarthritis.
• To differentiate between instability-related and fracture-related osteoarthritis patterns.
• To highlight diagnostic and therapeutic implications of these patterns.

Main Methods:

• Review of biomechanical principles in wrist degeneration.
• Classification of osteoarthritis patterns based on etiology (instability vs. fracture).
• Analysis of characteristic articular involvement sequences.

Main Results:

• Secondary osteoarthritis results from intrinsic/extrinsic stabilizer failure or scaphoid nonunion/malunion.
• Instability patterns include scapholunate advanced collapse and lunotriquetral tear arthrosis.
• Fracture patterns include scaphoid nonunion advanced collapse and post-distal radius malunion osteoarthritis.

Conclusions:

• Wrist osteoarthritis progression is driven by biomechanical changes post-injury.
• Distinct patterns of articular involvement have diagnostic and therapeutic relevance.
• Understanding these pathways aids in managing wrist joint degeneration.