Partial capitate shortening for Kienböck's disease

Area of Science:

• Orthopedic Surgery
• Hand Surgery
• Wrist Arthroscopy

Background:

• Scaphoid nonunion and avascular necrosis of the lunate can lead to wrist arthritis.
• The Lichtman classification system stages wrist arthritis severity.
• Limited treatment options exist for early-stage wrist arthritis.

Purpose of the Study:

• To evaluate the efficacy of partial capitate shortening in patients with Lichtman stage II and III-A wrist arthritis.
• To assess clinical outcomes and radiographic changes following the procedure.
• To investigate lunate revascularization after partial capitate shortening.

Main Methods:

• A case series of seven patients with Lichtman stage II and III-A wrist arthritis.
• Patients underwent partial capitate shortening.
• Outcomes assessed included pain, range of motion, grip/pinch strength, patient satisfaction, and radiographic indices (Lichtman stage, lunate height index, carpal height index).
• Magnetic resonance imaging (MRI) was used to evaluate lunate revascularization.

Main Results:

• All patients reported improvement in pain, range of motion, grip, and pinch strength.
• Patient satisfaction scores improved post-surgery.
• Radiographic staging remained stable or improved.
• Lunate revascularization was observed in all patients at final follow-up.
• Median follow-up was 38 months.

Conclusions:

• Partial capitate shortening is an effective surgical option for managing Lichtman stage II and III-A wrist arthritis.
• The procedure demonstrates positive clinical outcomes and promotes lunate revascularization.
• This technique offers a promising treatment for early-stage wrist arthritis, improving patient function and satisfaction.