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Familial association of femoral trochlear dysplasia with recurrent bilateral patellar dislocation.
[trochlear dysplasia]
Femoral
trochlear
dysplasia
is
an
anatomic
deformity
that
predisposes
patients
to
patellar
instability
,
including
patellar
subluxation
and
dislocation
,
and
can
lead
to
severe
patellofemoral
joint
degeneration
if
left
untreated
.
Femoral
trochlear
dysplasia
leading
to
recurrent
bilateral
patellar
dislocation
has
rarely
been
reported
as
having
a
familial
association
.
Orthopedic
surgeons
who
encounter
patients
presenting
with
chronic
patellar
instability
with
no
underlying
disease
or
syndrome
should
be
aware
of
the
presence
of
femoral
trochlear
dysplasia
leading
to
recurrent
bilateral
patellar
dislocation
.
Although
femoral
trochlear
dysplasia
remains
uncommon
,
the
presence
of
bilateral
recurrent
patellar
dislocation
in
multiple
members
of
the
same
family
is
highly
suggestive
of
genetic
inheritance
.
This
article
describes
3
patients
from
1
family
who
presented
with
femoral
trochlear
dysplasia
leading
to
recurrent
bilateral
patellar
dislocation
.
To
our
knowledge
,
this
is
the
second
article
to
describe
a
familial
form
of
femoral
trochlear
dysplasia
associated
with
recurrent
bilateral
patellar
dislocation
and
is
the
first
article
in
English
.
A
lower
threshold
for
screening
and
early
intervention
for
symptomatic
family
members
may
be
indicated
to
prevent
the
long
-term
effects
of
chronic
patellar
subluxation
,
dislocation
,
and
patellofemoral
arthritis
.