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The role of trochleoplasty in patellofemoral instability.
[trochlear dysplasia]
The
management
of
recurrent
patellofemoral
instability
is
challenging
.
The
etiology
of
the
instability
is
multifactorial
,
requiring
the
examination
of
lower
limb
alignment
,
relationship
of
the
patella
to
the
trochlear
groove
and
tibial
tubercle
,
and
the
soft
-tissue
restraints
.
As
initial
surgical
efforts
were
aimed
at
isolated
soft
-tissue
repair
or
reconstruction
,
patients
often
had
continued
instability
.
Thus
,
a
heightened
interest
in
trochleoplasty
has
occurred
as
trochlear
dysplasia
has
been
found
in
85
%
of
patients
with
recurrent
instability
.
Different
types
of
trochleoplasties
have
been
developed
depending
on
the
type
of
dysplasia
including
the
trochlear
lengthening
osteotomy
,
the
proximal
open
trochleoplasty
,
the
deepening
trochleoplasty
,
and
the
arthroscopic
deepening
trochleoplasty
.
The
techniques
,
benefits
,
and
results
of
these
trochleoplasties
will
be
presented
in
this
review
.
Diseases
Validation
Diseases presenting
"relationship of the patella to the trochlear groove and tibial tubercle"
symptom
trochlear dysplasia
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