The use of cementless femoral stems is known to provide satisfactory long-term clinical results. Extensive and durable osseointegration of these implants has been reported in numerous series, despite the use of stems with different geometry and coating distribution.

This study will validate the performance and safety of the HYPE (SERF) stems in the context of the 93/42/EEC directive and in relation to the recommendations of the MEDDEV 2.7.1 (Guideline for post-marketing follow-up), which provides for a systematic procedure for monitoring clinical data in order to verify the performance claimed for medical devices.

Inclusion Criteria:

• Male or female
• Degenerative or inflammatory hip disease requiring total hip replacement
• Primary or secondary osteoarthritis,
• Advanced joint destruction resulting from rheumatoid arthritis or traumatic origin,
• Avascular fracture or necrosis,
• Displaced subcapital and transcervical fracture as well as PAPROSKY stages I to IIB bone defects.
• Joint destruction of traumatic origin
• Following a previous operation, provided that the new device does not interfere with the material in place (osteosynthesis, joint reconstruction, arthrodesis, hemiarthroplasty, total arthroplasty).

Exclusion Criteria:

• Patient with a psychological, family, sociological or geographical situation likely to hinder compliance with the study protocol and follow-up
• Known pregnancy in progress
• Breastfeeding
• Patient requiring a bone graft
• Neurological disorders or other pathology that may influence locomotion
• History of sepsis in the hip to be operated on
• Short-term vital prognosis

The expected number of patients in the registry is estimated at 180 patients.The implantation of the total hip prosthesis will be carried out in patients with a hip pathology, in first intention or during a total prosthesis revision. The implant placement will be performed on a continuous series of patients by the investigator according to the eligibility criteria. Post-operative follow-up will be carried out for ten days following the operation, in the hospital concerned. Successive clinical and radiological evaluations will be performed at a date set by the investigator.