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A random Abstract
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Clinical outcomes of medial patellofemoral ligament repair in recurrent (chronic) lateral patella dislocations.
[trochlear dysplasia]
The
specific
aim
of
this
project
was
to
review
a
homogenous
group
of
patients
who
had
chosen
to
undergo
medial
patellofemoral
ligament
(
MPFL
)
repair
to
stabilize
their
patella
after
repeat
(
chronic
)
patellofemoral
dislocations
and
to
record
the
success
of
this
procedure
in
stabilizing
the
patella
against
further
lateral
dislocations
.
This
is
a
retrospective
study
of
55
knees
in
48
patients
who
underwent
a
repair
of
the
medial
patellofemoral
ligament
by
a
single
surgeon
over
a
4
-
year
period
.
The
endpoint
of
the
study
was
a
documented
patellofemoral
dislocation
or
a
minimum
2
-
year
follow-up
.
Fifty
-
five
knees
in
48
patients
underwent
a
MPFL
repair
/
reattachment
.
Patella
alta
,
as
defined
by
the
Insall-
Salvati
(
I
/
S
)
ratio
,
was
within
normal
limits
in
6
(
14
%
)
.
The
I
/
S
ratio
was
greater
than
1
.
2
in
38
patients
(
86
%
)
and
greater
than
1
.
4
in
23
patients
(
52
%
)
.
Trochlear
dysplasia
as
defined
by
a
positive
crossing
sign
on
a
true
lateral
radiograph
and
/
or
a
sulcus
angle
on
axial
view
of
greater
than
145
was
present
in
45
/
47
(
96
%
)
.
Successful
management
of
the
knee
as
defined
by
no
further
patella
dislocation
occurred
in
22
knees
.
Nineteen
knees
sustained
a
redislocation
event
(
46
%
)
.
The
surgical
procedure
of
operative
repair
(
reattachment
)
of
the
MPFL
to
its
femoral
attachment
had
a
significantly
high
rate
of
failure
in
this
patient
group
of
chronic
(
repeat
)
lateral
patellar
dislocators
.