Hip Dysplasia Measurement - GE Logiq 500 User Manual

Hip Dysplasia Measurement

A HIP Dysplasia measurement is available. The HIP
calculation assists in assessing the development of the infant
hip. In this calculation three straight lines are superimposed on
the image and aligned with the anatomical features. The 2
angles are computed, displayed and can be used by the
physician in making a diagnosis.
The three lines are (Source: R GRAF, journal of Pediatric
Orthopedics, 4: 735–740(1984)).
The Angle α (Alpha) is the supplement of the angle between 1
and 3. It characterizes the osseous convexity. The angle β
.
(Beta) is the angle between lines 1 and 2. It characterizes the
bone supplementing additional roofing by the cartilaginous
convexity.
NOTE: There are two methods (Cranial–left and Caudal–left)
for the Hip Dysplasia Measurement Orientation. This preset,
"Hip Orientation", is located on Preset Program page 4.
LOGIQ 500 Basic Users Manual
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1. The inclination line connects the osseous convexity to
labrum acetabulare.
2. The Acetabulum roof line connects the lower edge of
the osilium to the osseous convexity.
3. The Baseline connects the osseous acetabulum
convexity to the point where the joint capsule and the
perichondrium unite with the iliac bone.
Figure 3–27. Hip Dysplasia
General Calculations
b
T
8–9