Rare Diseases Symptoms Automatic Extraction
Home
A random Abstract
Our Project
Our Team
Evidence of trochlear dysplasia in femoral component designs.
[trochlear dysplasia]
The
study
aimed
to
compare
trochlear
profiles
of
various
total
knee
arthroplasty
(
TKA
)
models
to
anatomic
profiles
observed
in
healthy
and
pathologic
knees
and
to
evaluate
trochlear
designs
against
radiologic
indicators
for
PF
disorders
and
trochlear
dysplasia
.
The
trochlear
profiles
of
14
different
TKA
models
were
digitized
using
a
coordinate
measurement
machine
at
various
flexion
angles
(
0
°
,
15
°
,
30
°
and
45
°
)
to
deduce
the
following
variables
:
sulcus
angle
,
trochlear
groove
orientation
,
height
of
lateral
facet
,
and
mediolateral
groove
position
.
The
effect
of
externally
rotating
the
femoral
component
on
those
variables
was
simulated
.
The
sulcus
angle
was
greater
than
the
indicators
for
trochlear
dysplasia
of
144
°
in
11
implants
at
45
°
flexion
,
and
in
13
implants
at
30
°
flexion
.
The
lateral
facet
height
was
less
than
average
anatomic
values
of
5
Â
mm
in
eight
specimens
through
the
entire
range
of
early
flexion
(
0
°
-
30
°
)
.
The
trochlear
groove
was
oriented
laterally
in
13
specimens
(
3
.
3
°
-
11
.
7
°
)
and
was
vertical
in
one
specimen
(
0
.
3
°
)
.
Applying
an
external
rotation
up
to
6
°
resulted
in
noticeable
lateral
translation
of
the
trochlear
groove
and
facets
,
but
negligible
posterior
translation
.
The
study
presented
a
detailed
description
of
previously
overlooked
TKA
design
parameters
and
revealed
that
some
femoral
components
exhibit
characteristics
of
trochlear
dysplasia
.
The
clinical
relevance
of
this
descriptive
study
is
that
surgeons
should
be
aware
of
such
design
limitations
to
improve
choice
of
implant
for
patients
with
history
of
PF
disorders
and
to
adapt
surgical
techniques
as
necessary
to
optimize
PF
tracking
.
Case-control
study
,
Level
III
.
