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Combined arthroscopic deepening trochleoplasty and reconstruction of the medial patellofemoral ligament for patients with recurrent patella dislocation and trochlear dysplasia.
[trochlear dysplasia]
Prospectively
,
a
consecutive
group
of
patients
troubled
by
recurrent
patella
dislocation
and
trochlear
dysplasia
has
been
followed
after
a
combined
arthroscopic
deepening
trochleoplasty
and
reconstruction
of
the
medial
patellofemoral
ligament
.
The
purpose
of
this
follow-up
study
is
to
report
the
clinical
results
.
Indications
for
combined
arthroscopic
deepening
trochleoplasty
and
reconstruction
of
the
medial
patellofemoral
ligament
were
two
or
more
patellar
dislocations
with
a
persistent
apprehension
sign
above
20
°
of
flexion
and
trochlear
dysplasia
grade
B
or
more
.
Prospectively
,
the
Tegner
,
Kujala
and
KOOS
scores
were
recorded
.
Thirty
-
one
consecutive
patients
(
37
knees
)
,
21
women
and
10
men
,
with
a
median
age
of
19
(
12
-
39
)
underwent
the
procedure
.
Results
were
obtained
for
29
knees
with
a
minimum
of
12
-
month
follow-up
(
average
29
months
;
range
12
-
57
)
.
No
complications
,
redislocations
or
arthrofibrosis
have
been
recorded
.
Five
patients
needed
further
surgery
.
The
median
pre-
and
postoperative
scores
(
range
)
are
as
follows
:
Kujala
64
(
12
-
90
)
to
95
(
47
-
100
)
;
Tegner
4
(
1
-
6
)
to
6
(
4
-
9
)
;
KOOS
score
pain
86
-
94
;
symptoms
82
-
86
;
ADL
91
-
99
;
sport
40
-
86
;
QDL
25
-
81
.
No
significant
correlation
was
found
with
respect
to
the
results
and
recorded
parameters
.
Significant
improvement
for
all
of
the
scores
was
observed
(
p
<
0
.
001
)
.
The
use
of
arthroscopic
deepening
trochleoplasty
in
combination
with
reconstruction
of
the
medial
patellofemoral
ligament
was
found
to
be
a
safe
and
reproducible
procedure
.
Considering
the
stability
achieved
,
the
knee
scores
and
the
patient
's
level
of
satisfaction
,
the
results
are
encouraging
.
Prospective
consecutive
case
series
,
with
evaluation
of
confounding
factor
.
No
control
group
,
Level
IV
.
Diseases
Validation
Diseases presenting
"medial patellofemoral ligament"
symptom
trochlear dysplasia
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