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Characteristics of femorotibial joint geometry in the trochlear dysplastic femur.
[trochlear dysplasia]
The
medial
and
lateral
tibia
plateau
geometry
has
been
linked
with
the
severity
of
trochlear
dysplasia
.
The
aim
of
the
present
study
was
to
evaluate
the
tibial
slope
and
the
femoral
posterior
condylar
offset
in
a
cohort
of
consecutive
subjects
with
a
trochlear
dysplastic
femur
to
investigate
whether
the
condylar
offset
correlates
with
,
and
thus
potentially
compensates
for
,
tibial
slope
asymmetry
.
Magnetic
resonance
imaging
was
used
to
assess
the
severity
of
trochlear
dysplasia
as
well
as
the
tibial
slope
and
posterior
offset
of
the
femoral
condyles
separately
for
the
medial
and
lateral
compartment
of
the
knee
joint
in
98
subjects
with
a
trochlear
dysplastic
femur
and
88
control
subjects
.
A
significant
positive
correlation
was
found
for
the
medial
tibial
slope
and
the
medial
posterior
condylar
offset
in
the
study
group
(
r
(
2
)
=
0
.
1566
;
P
<
0
.
001
)
.
This
relationship
was
significant
for
all
subtypes
of
trochlear
dysplasia
and
was
most
pronounced
in
the
severe
trochlear
dysplastic
femur
(
Dejour
type
D
)
(
r
(
2
)
=
0
.
3734
;
P
=
0
.
04
)
.
No
correlation
was
found
for
the
lateral
condylar
offset
and
the
lateral
tibial
slope
in
the
study
group
or
for
the
condylar
offset
and
the
tibial
slope
on
both
sides
in
the
control
group
.
The
positive
correlation
between
the
medial
femoral
condylar
offset
and
the
medial
tibial
slope
,
that
is
,
a
greater
degree
of
the
medial
tibial
slope
indicated
a
larger
offset
of
the
medial
femoral
condyle
,
appears
to
represent
a
general
anthropomorphic
characteristic
of
distal
femur
geometry
in
patients
with
a
trochlear
dysplastic
femur
.
