GE LOGIQ A100, Technical Publication

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OB Measurements
162
LOGIQ
t α
100 User Manual
2211157–100 Rev 0
HIP Dysplasia (HIP)
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 two 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)).
S
The inclination line connects the osseous convexity
to the labrum acetabulare.
S
The Acetabulum roof line connects the lower edge of
the osileum to the osseous convexity.
S
The Baseline connects the osseous acetabulum
convexity to the point where the joint capsule and the
perichondrium unite with the iliac bone.
The Angle
T
(Alpha) is the supplement of the angle
between 1 and 3. It characterizes the osseous convexity.
The angle
b
(Beta) is the angle between lines 1 and 2. It
characterizes the bone supplementing additional roofing
by the cartilaginous convexity.
b
T
Illustration 33. HIP Dysplasia