Evaluation of Predictive Factors for Ruptures of Meije Duo ™ Size 1 and 2 Femoral Stems in Hip Replacement Surgery

First, patients with Meije Duo ™sizes 1 or 2, who had surgery from 2007 to 2014, will be preselected on medical records.

The information notice will be sent to them by post. A period of reflection will be respected before contacting the patient to answer their questions concerning the research and its progress and obtain their oral consent to participate in the study.

After obtaining consent, investigators will enter the retrospective data collected in the medical and prospective file collected during this call.

Patients with at least one of the following criteria: weight> 60 kg and / or long neck / varus and / or DEVANE score ≥ 4, will be selected to have a hip X-ray which will be specially scheduled for the study.

This examination will tell us about the state of the prosthesis and of the underlying bone (broken stem, loosening of the implant, bone fracture, dislocation, border, etc.

It can be performed in our radiology department of the Diaconesses Croix Saint Simon hospital group or in another radiological center chosen by the patient if the latter cannot come to our hospital. In this case, a prescription for a hip X-ray will be sent to him by post to his current address as well as an information letter intended for the radiology office.

The patients who will be included in the study are implanted with Meije Duo ™ 1 and 2 between 2007 to 2014 and will all have a minimum follow-up of 4 years from the date of implantation. The maximum number of rupture complications is observed between the fourth and the eleventh year after fitting the prosthesis. All participants will therefore have a minimum of hindsight required for the evaluation of stem breaks. All of our patients will be contacted by telephone during the study period in chronological order of their previous management for obtaining consent, prospective data and for scheduling the hip radiography according to the criteria mentioned above.

Inclusion criteria

An x-ray of the hip concerned will be performed on all consenting patients, having at least one criterion of the following three during their medical history since the implantation of the hip prosthesis.

• Weight> 60 kg
• DEVANE score ≥ 4
• Long neck / varus

Exclusion criteria

• The patient expresses his opposition to the use of his personal data
• Patients (<18 years old)
• Patients unable or out of state to express their consent
• Patient unable to speak French
• Patient with memory impairment or cognitive impairment
• Patient not affiliated to a social security or equivalent health coverage