Evaluation of the clinical and radiological outcome of uncemented femoral stems according to their proximal coating.

Retrospective study

On a large population of patients having undergone total hip arthroplasty, divided into two cohorts constituted according to the type of femoral stem implanted (with or without proximal coating by MectaGrip):

Primary objective: To compare between the two groups the radiological osseointegration of the stems five years after arthroplasty.

Secondary objectives: To compare between the groups

• The functional outcome of the arthroplasty
• The frequency of radiological abnormalities (stress shielding, osteolysis, periprosthetic fractures or cracks, periprosthetic ossifications)
• Frequency of complications

Inclusion Criteria:

• Patient aged 18 years or older, having been informed of the research
• A patient with at least five years of uncemented total hip replacement implanted as a first-line procedure
• A patient who has been regularly monitored since surgery and for whom all clinical and radiological data are available at the five-year follow-up visit

Exclusion Criteria:

• Patient operated for revision
• History of femoral fracture (pre or per operative)
• Chronic treatment likely to affect calcium metabolism and ossification
• Patient under legal protection, guardianship or curatorship
• A patient who has indicated his or her opposition to the use of his or her medical data (by completing and returning the non-opposition form that will be sent to him or her).

Patients who have had a total hip replacement for at least five years.