Study the potential interest of bone scintigraphy for patients undergoing unicompartmental knee arthroplasty

Knee osteoarthritis is a very common disease with significant functional consequences. Surgical treatment is the ultimate treatment with the possibility of replacing only one compartment or the 3 joint compartments.

Consequently, the pre-surgical imaging is essential to ensure that the 3 compartments are not compromised when a uni-compartmental prosthesis (PUC) is considered.

The scintigraphy because of its good diagnostic performance seems to be interesting in this indication for the preoperative assessment of knee uni-compartmental prostheses to ensure the absence of degenerative lesion of the unoperated compartment.

This study will evaluate the impact of bone scintigraphy on surgery and the potential correlation between scintigraphic and clinical data; study the pronostic impact of bone scintigraphy

Inclusion Criteria:

• patient over 18 years old / uni or bilateral unicompartmental knee prothesis/ non opposition

Exclusion Criteria:

• Under 18 years old/ contraindications for bone scintigraphy/ refusal to participate

patient over 18 years old undergoing unicompartmental knee arthroplasty (1 or 2 knee) and who accept the study