Title: Intermediate hip arthroplasty (IHA): epidemiological profile and results of 65 cases collected at the Niamey General Reference Hospital.

Introduction: The main objective of this study was to analyze the epidemiological, therapeutic and evolutionary aspects of patients who benefited from PIH.

Method: This was a descriptive study carried out over a period of 67 months from January 1, 2018 to July 31, 2023. The sphinx software without its version 5.1.0.4 allowed the entry and analysis of our data.

Results: The hospital frequency of PIH was 13.37% of hip traumas. The male gender was the most affected in 50.80% with a sex ratio of 1.03. The average age of patients was 58.97 years (21-90 years). Domestic accidents were the majority etiologies, i.e. 49.23% of cases. Parker score greater than 6 predominated, i.e. 84.60%. The majority had a poor PMA score in 53.85%. Neck fracture was the most common diagnosis found in 55.38%. We recorded one case of death, i.e. 1.54% of natural causes. All patients seen at follow-up had recovered their previous functional autonomy according to the Postel and Merle d'Aubigné score.