Analysis of the Relationship Between Early Postoperative Anemia and the Evolution of Autonomy at 6 Months in Patients 75 Years of Age and Older Operated on Following a Fracture of the Upper End of the Femur

Inclusion Criteria: * Age ≥ 75 years * Patient operated on a fracture of the upper extremity of the femur * Patient, family or close relative who does not object to participation in the study * Patient affiliated to a social security system * Patient who can be monitored as part of the protocol Exclusion Criteria: * Refusal to participate in the study (patient, family or trusted relative) * Patient with support on the operated limb not authorized by the surgeon * Patient with an associated fracture (polytrauma, concomitant trauma to the upper limb...) * Patient with a pathologic fracture * Patient included in Category 1 interventional research (involving a drug or medical device) * Patient deprived of liberty * Patient not affiliated to a social security system