What is the implication of scaphoid ring signin advanced Kienböck's disease? Is it a signof advanced carpal collapse or rotaryscaphoid subluxation?

Based on the results, we suppose the scaphoid ring sign is the implication of rotary scaphoid subluxation in stage IIIB, which was caused by destructions of LRL and SLIL ligaments. All procedures aimed at stage IIIB must account for this important factor.