This is also called in-toeing. Less common than femoral ante-version, femoral retroversion occurs when the thighbone (femur) is angled backwards relative to the hip joint. This backwards angling can cause the entire lower extremity to turn to the outside. What is femoral anteversion? Patient story: Correction of tetra-torsional malalignment Interpretation: Normal: At birth, the mean anteversion angle is 30 degrees which decreases to 8-15 degrees in adults (angle of internal rotation). Angle measurement: Measure the angle of internal or external rotation using the goniometer. Symptoms, Causes, Treatment for Out-Toeing – Femoral retroversion Out-toeing is the common name used for a condition known as femoral retroversion. This surgery involves cutting and realigning the femur. Femoral retroversion is common in newborns because of contracture of the hip from intrauterine positioning.5, 9, 11 It … Background: Femoral retroversion has been noted as a possible risk factor for poor clinical results after hip arthroscopic surgery. Surgery was offered if the patient had failed all nonsurgical treatment measures and if the range of motion aberration correlated with the version abnormality (ie, excessive hip internal rotation with excessive anteversion or a lack of internal rotation associated with femoral retroversion). Purpose: To compare the outcomes of the arthroscopic treatment of hip abnormalities in patients with femoral retroversion to patients with femoral anteversion between 10° and 20°. Treatment for femoral anteversion. This can lead to a condition known as acetabular retroversion, in which the socket grows too far over the front of the ball, or femoral head, of the hip joint. This condition is diagnosed in childhood, and is characterized by the unusual “duck feet” posture and walk that the child develops. Patients that had femoral retroversion did not have significant improvements in WOMAC scores. Second, abnormal bumps called cam lesions can develop on the head-neck junction of the hip ball. In femoral retroversion, the femoral neck axis is oriented posterior to the transcondylar axis thus positioning the femoral neck and head posterior to the coronal plane of the femur. Started in 1995, this collection now contains 6881 interlinked topic pages divided into a tree of 31 specialty books and 737 chapters. Femoral anteversion causes a child's knees and feet to turn inward and have a "pigeon-toed" appearance. Our study reports the prevalence of osseous cam deformity in a cross section of a historic general population from a large urban area. Acetabular retroversion may be a hallmark of abnormal development of the hip that may result in additional pathologies including abnormal version on the femoral side. While many children grow out of their femoral anteversion conditions, excessive anteversion may require surgical correction, through a procedure known as a femoral osteotomy. The condition is somewhat more common in girls than boys. Angle >15 degrees: Increased anteversion leads to squinting patellae & pigeon toed walking (in-toeing) which is twice as common in girls. Femoral Retroversion and Out-Toeing. Study design: Cohort study; Level of evidence, 3. Femoral anteversion is an inward twisting of the thigh bone (femur). FPnotebook.com is a rapid access, point-of-care medical reference for primary care and emergency clinicians. Femoral anteversion occurs in up to 10 percent of children. 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