Ulnar shortening osteotomy for ulnar impaction syndrome

Area of Science:

• Orthopedic Surgery
• Hand Surgery
• Wrist Biomechanics

Background:

• Ulnar impaction syndrome involves the ulna impacting the ulnar carpus, often due to ulnar length variance.
• This condition can occur with positive, neutral, or negative ulnar variance.

Purpose of the Study:

• To outline the surgical technique for ulnar shortening osteotomy (USO).
• To evaluate the clinical outcomes and patient-reported pain and disability following USO for ulnar impaction syndrome.

Main Methods:

• Retrospective review of 28 patients who underwent USO for ulnar impaction syndrome.
• Surgical technique involves precise osteotomy and fixation to correct ulnar variance, aiming for -2 mm postoperatively.
• Pre- and postoperative pain (VAS) and DASH scores were collected; subgroup analyses included workers' compensation patients and smokers.

Main Results:

• Mean ulnar variance improved from +2.3 mm to -0.8 mm.
• Significant reduction in mean pain scores (VAS 7.9 to 3.1, P < 0.0001).
• Workers' compensation patients and smokers reported significantly higher postoperative pain and disability.

Conclusions:

• Ulnar shortening osteotomy is an effective surgical technique for improving pain in ulnar impaction syndrome.
• Subgroup analysis indicates that workers' compensation status and smoking may negatively impact outcomes.
• Further research is warranted to explore factors influencing outcomes in specific patient populations.