Inclusion Criteria:  Patients over 18 years old. Patients that were treated with the sagitta EVL-R stem for an indication of arthroplasty and according to the Instruction For Use (IFU). Primary or secondary arthrosis, Advanced joint destruction resulting from rheumatoid arthritis or traumatic arthritis, A fracture or an avascular necrosis, Following a previous surgical operation, on condition that the new device does not interfere with the material in place. indicated in the case of primary or secondary arthrosis, displaced sub-capital or transcervical fracture as well as stages I and IIB bone loss according to the PAPROWSKI classification. The SAGITTA EVOLUTION for REVISION implant is recommended for indications according to the bone loss classifications of SOFCOT stages I to VI, PAPROSKY types I to VI and the AAOS types Ia to Ic. Dysplasia  Exclusion Criteria:  Patient presenting a contraindication indicated in the IFU.