What is hip anteversion and Retroversion?
Because the lower part of the femur is connected to the knee, this also means that the knee is twisted outward relative to the hip. The opposite condition, in which the femur has an abnormal forward (inward) rotation, is called femoral anteversion. Femoral retroversion can occur in one or both legs.
What is hip anteversion?
Also called hip anteversion, femoral anteversion is a forward (inward) rotation in the femur (thighbone), which connects to the pelvis to form the hip joint. In other words the knee is excessively twisted inward relative to the hip. Femoral anteversion can occur in one or both legs.
Is hip Retroversion normal?
Acetabular retroversion is a common abnormality affecting 5 to 20% of the general population.
What is the anteversion angle?
Femoral neck anteversion is defined as the angle between an imaginary transverse line that runs medially to laterally through the knee joint and an imaginary transverse line passing through the center of the femoral head and neck (Fig. 1).
What is the difference between retroversion and anteversion?
Femoral retroversion is a rotational or torsional deformity in which the femur twists backward (outward) relative to the knee. The opposite condition, in which the femur has an abnormal forward (inward) rotation, is called femoral anteversion. The condition is usually congenital, meaning children are born with it.
How do you measure hip anteversion?
Femoral anteversion can be determined by measuring the angle formed between the long axis of the femoral neck and a line parallel to the dorsal aspect of the femoral condyles (posterior condylar axis, or PCA) on axial slices at MRI or CT.
How is femoral Retroversion treated?
TREATMENT: Treatment of femoral retroversion can become very difficult. The primary treatment is to attempt to stretch the muscle group in the hip to improve internal rotation. This must be done aggressively at a very early age to try to improve the overall muscle balance in the hip.
How is hip retroversion treated?
As the underlying problem with acetabular retroversion is one of the hip joint being malpositioned, it may require correction with surgery. Having an acetabular retroversion treatment may involve either arthroscopic trimming of the bone, or osteotomy (cutting the pelvis and realigning it).
What is Craig’s test?
Craig’s test is a passive test that is used to measure femoral anteversion or forward torsion of the femoral neck. It is also known as ‘Trochanteric Prominence Angle Test (TPAT)’. Femoral anteversion is the angle between the femoral neck and femoral shaft, indicating the degree of torsion of the femur.
What causes hip internal rotation?
Internal rotation gait is common in children with cerebral palsy. Factors thought to contribute include femoral anteversion, hip flexor tightness, imbalance of hip rotators, and hamstring and adductor tightness.
How do you test for hip retroversion?
There are various ways via which femoral anteversion can be measured. These are some methods used: imaging using radiography, fluoroscopy, computed tomography (CT), ultrasound (US), and magnetic resonance imaging (MRI) as well as functional assessments.
What is anteversion of the hip?
Hip/Femoral Anteversion. Femoral anteversion is a condition in which the femoral neck is excessively rotated forward on the femoral shaft. Excessive anteversion overloads the anterior structures of the hip joint, including the labrum and capsule, and can cause snapping.
What is retroversion of the hip?
Retroversion refers to an abnormal backward rotation of the hip relative to the knee. This condition can affect patients of all ages and leads to abnormal stress in the low back, hip and knee, as well as an abnormal gait (walking stance).
The lateral center-edge angles were comparable between the groups (13.8° versus 12.9°; p = 0.68); however, the hips in the retroversion group had a trend of smaller 3D femoral head coverage than those in the anteversion group (59% versus 63%; p = 0.058).
Is femoral anteversion measured by magnetic resonance imaging after primary hip arthroscopy?
Methods: Patients who underwent primary hip arthroscopy from August 2008 to April 2011 and underwent femoral anteversion measurement by magnetic resonance imaging/magnetic resonance arthrogram were included. The patients were divided into 3 groups: retroversion, normal version, and excessive anteversion.