Traumatic ulnar variance in Kienböck's disease.

Area of Science:

• Orthopedics
• Hand Surgery
• Radiology

Background:

• Kienböck's disease is a condition affecting the lunate bone in the wrist.
• The ulnar minus variant is a skeletal variation where the ulna is shorter than the radius.
• Previous studies suggest a potential link between the ulnar minus variant and Kienböck's disease.

Observation:

• A case study detailing a patient with unilateral ulnar minus variant and ipsilateral Kienböck's disease.
• The ulnar minus variant was likely caused by trauma to the distal ulnar growth plate.
• The contralateral wrist showed no abnormalities.

Findings:

• The presence of both ulnar minus variant and Kienböck's disease in the same wrist.
• The findings support the hypothesis that the ulnar minus variant is a contributing factor to the development of Kienböck's disease.
• Trauma-induced ulnar minus variant may increase susceptibility to Kienböck's disease.

Implications:

• This case provides further evidence for the etiologic relationship between ulnar minus variant and Kienböck's disease.
• Understanding this relationship can aid in the diagnosis and management of wrist conditions.
• Further research into growth plate injuries and their long-term effects on wrist biomechanics is warranted.