Psoas Tenotomy Under Ultrasound

The success of this new ultrasound-guided ilio-psoas tendon tenotomy technique will be assessed by the disappearance of the ilio-psoas conflict after surgery. This criterion will be measured at the first control consultation

The pain felt by the patient will be collected using a numerical scale from 0 to 10 before surgery, 3 hours after surgery, the day after surgery, then 3 weeks, 6 weeks, 3 months and 6 months after surgery. Zero '0', means that the patient has no pain ; '10', means that the patient has extreme pain. The non-inferiority limit is set at 1.5 on the pain EVA scale

The Oxford Hip Score is a questionnaire that assesses pain and hip function of patients who have undergone total hip replacement surgery. Patient should reflect on their pain and functional abilities on the previous 4 weeks. The questionnaire is divided into 2 domains (pain and function), each domain being composed of 6 questions. For each question, 5 answers are possible, each with a score of 0 to 4 (None = 4, Minimal = 3, Slight = 2, Moderate = 1, Severe = 0). The total score ranges from 0 (most severe symptoms) to 48 (no symptoms).

The Harris Hip Score assess the results of hip surgery. It is composed of 10 questions divided into 4 domains (pain, function without deformation and amplitude of movements). A score is assigned to each response. The total score varies from 0 to 100. The higher the score, the better the results and the less dysfunctional the patient

the Postel and Merle Aubigne score measures pain, joint mobility and walking. For each question, 6 answers are possible, each one having a score of 0 to 6. The total score varies from 0 to 18, 18 indicating a perfect hip

The technical difficulty of surgical procedure will be assessed using a 4-point Likert scale: on the day of the operation, the surgeon will have to answer the question "What was the difficulty experienced by you in the operation?". He may answer by: Very difficult, difficult, moderately difficult or easy.

The operative time will be expressed in minutes between skin incision and skin closure

The installation time will be expressed in minutes between the end of intubation and the beginning of the brush

Total blood loss will be calculated according to the ostheo formula, including pre-operative (in the month preceding the surgery) and post-operative (the day after surgery) hematocrit values. This measure makes it possible to accurately assess the hidden blood losses related to the hematic extravasation

The length of hospital stay will be expressed in hours, between the entry and the discharge of the patient

The scarring after surgery will be evaluated at 6 weeks after surgery using a subjective scar satisfaction score (4-point Likert scale), transmitted by the patient himself. The patient will have to answer the question "Are you satisfied with your scar?". He can answer: Very satisfied, satisfied, dissatisfied or very dissatisfied.

Quality of life will be evaluated using the EuroQol five-dimension questionnaire (EQ-5D-5L), at inclusion, 6 weeks, 3 and 6 months after surgery.The EQ-5D-5L comprises a descriptive system and a visual analogue scale (VAS). The descriptive system is composed of five health dimensions (mobility, self-care, usual activities, pain/discomfort and anxiety/depression) with 5 levels of health (no problems, slight problems, moderate problems, severe problems and extreme problems). For each of the 5 dimensions, the participant's answer is converted to a number between 1 and 5, expressing the health state reported. The responses are combined to produce a five-digit number describing the participant's health status which is converted to a utility value from the country specific value set. The French EQ-5D-5L value set has utility between -0.530 (health condition worse than death) and 1 (best possible health). The VAS records the self-rated health status on a graduated scale from 0 to 100.

Patient satisfaction will be assessed at 3 weeks, 6 weeks, 3 months and 6 months post-surgery using a 4-point Likert scale. To do this, the patient will have to answer the question: "Are you satisfied with the results of your surgery?". They can answer with: very satisfied, satisfied, dissatisfied, or very dissatisfied.

The subjective value of the hip will be assessed at inclusion, 3 weeks, 6 weeks, 3 months and 6 months after surgery by the patient himself. By answering the question "What then is the overall percentage value of your hip if a completely normal hip equals 100%?" , the patient should assess his hip on a scale of 0 to 100, 100 corresponding to a perfect hip.

The forgotten hip sensation will be assessed by the patient himself at 3 weeks, 6 weeks, 3 months and 6 months after surgery by answering the question "Have you forgotten your hip?". The patient can answer yes or no.

The forgotten hip score will be assessed at inclusion, 6 weeks, 3 and 6 months after surgery. The score is composed of 12 questions assessing the degree of forgetfulness. For each question, the patient may respond with never, almost never, rarely, sometimes, often.

Early complications (< 90 days after surgery) and late complications (> 90 days after surgery) will be sought the day after surgery and throughout the follow-up period. They will be classified as major (infections at the surgical site or medical complications increasing the length of hospitalization) or minor according to the series of the literature

The number of patients requiring rehabilitation will be collected for the duration of the study