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Radiographic parameters associated with lateral patella degeneration in young patients.
[trochlear dysplasia]
Localized
articular
cartilage
degeneration
in
the
patellofemoral
joint
is
a
common
but
yet
understudied
condition
in
younger
patients
.
The
purpose
of
this
paper
was
to
determine
whether
there
are
significant
differences
in
radiographic
alignment
between
those
with
and
without
isolated
lateral
patellofemoral
degeneration
.
Subjects
with
isolated
symptomatic
lateral
patellofemoral
degeneration
and
control
subjects
with
no
radiographic
degeneration
participated
in
the
study
.
Variables
of
interest
included
the
Caton
-
Deschamps
index
,
sulcus
angle
,
lateral
patellofemoral
angle
,
Dejour
classification
of
trochlear
dysplasia
,
patella
linear
displacement
and
the
tibial
tubercle-trochlear
groove
distance
.
We
found
significant
differences
between
the
patellofemoral
degeneration
group
versus
control
group
,
respectively
,
for
the
Caton
-
Deschamps
index
(
1
.
12
±
0
.
1
vs
.
1
.
00
±
0
.
1
)
,
lateral
patellofemoral
angle
(
10
.
6
±
4
.
3
vs
.
16
.
6
±
5
.
5
)
and
tibial
tubercle-trochlear
groove
distance
(
16
.
6
±
4
.
0
vs
.
9
.
0
±
4
.
3
)
.
However
,
we
found
no
difference
in
the
sulcus
angle
(
141
.
2
±
8
.
2
vs
.
137
.
0
±
6
.
0
)
,
patella
linear
displacement
(
3
.
7
±
1
.
9
vs
.
4
.
0
±
1
.
7
)
or
in
the
Dejour
Classification
.
It
appears
that
isolated
lateral
patellofemoral
degeneration
is
associated
with
specific
radiographic
indices
.
Even
though
the
radiographic
measures
in
patients
with
degeneration
may
not
be
considered
pathologic
,
they
are
"
high
normal
"
and
may
represent
a
risk
factor
for
the
development
of
focal
chondral
degeneration
in
the
lateral
trochlea
and
patella
.
III
.
Diseases
Validation
Diseases presenting
"isolated symptomatic lateral patellofemoral degeneration and control subjects with no radiographic degeneration"
symptom
trochlear dysplasia
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