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Correlation between trochlear dysplasia and the notch index.
[trochlear dysplasia]
To
evaluate
the
correlation
between
trochlear
dysplasia
and
the
notch
index
.
Magnetic
resonance
images
(
MRI
)
of
95
knees
in
54
male
and
36
female
patients
aged
4
to
74
(
mean
,
28
)
years
were
reviewed
by
2
musculoskeletal
radiologists
.
Standard
MRI
sequences
were
used
.
Based
on
the
Dejour
classification
of
trochlear
dysplasia
,
the
knees
were
classified
into
normal
or
types
A
,
B
,
C
,
and
D
.
A
notch
index
of
<
0
.
2
was
considered
narrow
.
Normal
knees
and
knees
with
trochlear
dysplasia
were
compared
.
60
of
the
95
knees
had
trochlear
dysplasia
,
of
which
39
were
Dejour
type
A
,
13
were
type
B
,
7
were
type
C
,
and
one
was
type
D
.
Dejour
types
B
,
C
,
and
D
were
combined
as
non-
type
A
.
Inter-observer
agreement
in
assessing
the
notch
index
was
good
(
Kappa
=
0
.
6
)
.
The
mean
notch
indices
in
normal
knees
and
knees
with
trochlear
dysplasia
were
comparable
(
0
.
161
vs
.
0
.
157
,
p
=
0
.
18
)
,
as
were
in
Dejour
type
A
and
non-
type
A
knees
(
0
.
154
vs
.
0
.
160
,
p
=
0
.
54
)
and
in
Dejour
types
A
,
B
,
C
,
and
D
knees
(
0
.
154
vs
.
0
.
165
vs
0
.
153
vs
.
0
.
2
,
p
=
0
.
17
-
0
.
7
)
.
The
rate
of
ACL
injuries
was
similar
in
patients
with
normal
knees
and
those
with
type
-
A
trochlear
dysplasia
.
A
low
notch
index
(
narrow
notch
)
was
not
associated
with
ACL
injury
.
T
he
notch
index
and
trochlear
morphology
are
2
independent
entities
.
A
narrow
notch
does
not
imply
a
shallow
trochlear
grove
.
Diseases
Validation
Diseases presenting
"female patients"
symptom
adrenomyeloneuropathy
aromatase deficiency
benign recurrent intrahepatic cholestasis
carcinoma of the gallbladder
classical phenylketonuria
congenital adrenal hyperplasia
cushing syndrome
erdheim-chester disease
esophageal adenocarcinoma
esophageal carcinoma
esophageal squamous cell carcinoma
fabry disease
familial hypocalciuric hypercalcemia
familial mediterranean fever
heparin-induced thrombocytopenia
lymphangioleiomyomatosis
oligodontia
papillon-lefèvre syndrome
phenylketonuria
pyruvate dehydrogenase deficiency
sneddon syndrome
trochlear dysplasia
von hippel-lindau disease
wolf-hirschhorn syndrome
x-linked adrenoleukodystrophy
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