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The degree of circularity of an ellipse is quantified by eccentricity, with values between 0 to 1, where 0 is a perfect circle (waist circumference same as height) and 1 is a vertical line. [1] To accommodate human shape data in a greater range, Thomas and colleagues mapped eccentricity in a range of 1 to 20 by using the equation: [ 1 ]
Normal values range between 5 and 12 mm. Differences greater than 1.5 mm between the two sides are considered abnormal. Reimer's migration index. Reimer's migration index (MI), also called the femoral extrusion index, [3] is calculated if hip dysplasia is detected. It can be used to indicate hip dislocation.
Normal values range between 5 and 25°. Retroversion is considered abnormal. [1] Femoral torsion is the angle between a line along the femoral head and neck axis and a second line that is touching the posterior border of both femoral condyles. The normal value at birth is approximately 32° and decreases gradually with age.
5.1 Normal range of motion. 6 Special maneuvers. 7 Other tests. 8 See also. 9 References. ... In medicine, physiotherapy, chiropractic, and osteopathy the hip ...
A scanner used to measure bone density using dual energy X-ray absorptiometry. Bone density, or bone mineral density, is the amount of bone mineral in bone tissue.The concept is of mass of mineral per volume of bone (relating to density in the physics sense), although clinically it is measured by proxy according to optical density per square centimetre of bone surface upon imaging. [1]
It is a common cause of hip pain and discomfort in young and middle-aged adults. [2] It occurs when the ball shaped femoral head contacts the acetabulum abnormally or does not permit a normal range of motion in the acetabular socket. [3]
The Harris Hip Score (HHS) is a common evaluation instrument of the results of various hip disabilities and methods of treatment, especially for the assessment of hip replacement. [1] It was developed by William H. Harris in 1969 with 30 patients who had suffered a fracture of the acetabulum or a luxation of the hip. [ 2 ]
Children's Hospital Oakland Hip Evaluation Scale (CHOHES) is a modification of the Harris hip score that is currently being evaluated. [37] Hip dysplasia can develop in older age. Adolescents and adults with hip dysplasia may present with a waddling gait, Trendelenburg's sign, decreased hip abduction, hip pain and in some cases hip labral tears.