Lunate Pseudarthrosis: Our Clinical Experience.

Background

Lunate pseudarthrosis is a complication of lunate fractures and few cases are described in the literature. We designed a case series of lunate pseudarthrosis, to acknowledge this topic and to show our clinical experience.

Methods

Four patients were included in this study. Three went through surgical treatment of lunate nonunion.

Results

At 2 years' follow-up, patients had slight improvement of range of motion (ROM) and Quick-DASH score compared to preoperative measures, though two patients developed scaphocapitate, radiolunate or midcarpal osteoarthritis. The fourth patient is asymptomatic and is being followed up.

Conclusions

Surgical options depend on the localization of the pseudarthrosis in the lunate. Fragment excision can be a good option when the fragment is small, preserving scapholunate (SL) stability. Caution must be taken with dorsal pole pseudarthrosis, regarding midcarpal osteoarthritis. Level of Evidence: Level IV (Therapeutic).