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Patellofemoral arthroplasty: outcomes and factors associated with early progression of tibiofemoral arthritis.
[trochlear dysplasia]
The
purpose
of
this
study
was
to
review
the
results
of
patellofemoral
arthroplasty
(
PFA
)
performed
by
a
single
surgeon
at
a
single
institution
in
order
to
determine
factors
associated
with
clinical
outcomes
and
progression
of
tibiofemoral
degenerative
joint
disease
.
Sixty
-
one
patients
with
isolated
patellofemoral
osteoarthritis
were
treated
with
a
PFA
by
a
single
surgeon
between
2003
and
2009
.
Fifty
-
nine
patients
were
available
for
analysis
with
a
mean
follow-up
of
4
years
(
range
2
-
6
years
)
.
Patients
were
evaluated
by
measuring
range
of
motion
and
with
the
use
of
the
Knee
Society
clinical
rating
system
,
the
Tegner
Activity
Level
Scale
,
and
the
UCLA
Activity
Score
.
In
addition
,
preoperative
radiographs
were
evaluated
for
patellofemoral
and
tibiofemoral
compartment
osteoarthritis
and
presence
of
trochlear
dysplasia
,
and
post-operative
radiographs
were
reviewed
for
progression
of
tibiofemoral
degenerative
arthritis
.
Furthermore
,
multivariate
statistical
methods
were
applied
to
study
factors
that
had
potential
to
influence
the
final
outcome
.
There
was
no
statistically
significant
association
between
age
,
gender
,
history
of
prior
knee
surgery
,
patellar
height
,
patellofemoral
osteoarthritis
severity
,
patellar
and
femoral
component
size
,
or
performance
of
lateral
release
with
patient
pain
and
function
(
as
measured
by
the
Knee
Society
scores
)
or
progression
of
tibiofemoral
joint
osteoarthritis
at
final
follow-up
.
Increased
preoperative
body
mass
index
(
BMI
)
was
associated
with
lower
post-operative
Knee
Society
function
scores
(
p
=
0
.
03
)
.
Patients
with
preoperative
trochlear
dysplasia
had
significantly
less
radiographic
evidence
of
tibiofemoral
joint
osteoarthritis
progression
compared
with
patients
without
trochlear
dysplasia
at
final
follow-up
(
p
<
0
.
0001
)
.
In
this
study
,
patients
with
preoperative
radiographic
evidence
of
trochlear
dysplasia
experienced
less
progression
of
tibiofemoral
degenerative
joint
disease
than
patients
without
trochlear
dysplasia
at
a
mean
follow-up
of
4
years
.
IV
.
Diseases
Validation
Diseases presenting
"arthritis"
symptom
acute rheumatic fever
child syndrome
congenital adrenal hyperplasia
cystinuria
familial hypocalciuric hypercalcemia
familial mediterranean fever
focal myositis
harlequin ichthyosis
homocystinuria without methylmalonic aciduria
inclusion body myositis
lamellar ichthyosis
malignant atrophic papulosis
pyomyositis
sneddon syndrome
trochlear dysplasia
typhoid
wiskott-aldrich syndrome
This symptom has already been validated