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Congenital lumbar spinal stenosis with ossification of the ligamentum flavum in achondroplasia: a case report.
[achondroplasia]
Achondroplasia
is
a
genetic
disorder
of
bone
growth
.
Congenital
spinal
stenosis
is
a
well-known
complication
of
this
disease
,
but
,
to
the
best
of
our
knowledge
,
no
cases
involving
combined
stenosis
with
congenital
lumbar
spinal
stenosis
and
ossification
of
the
ligamentum
flavum
in
achondroplasia
have
been
reported
previously
.
In
this
report
,
we
describe
a
case
of
a
patient
with
congenital
spinal
stenosis
with
achondroplasia
combined
with
ossification
of
the
ligamentum
flavum
at
the
lumbar
spine
,
which
we
treated
with
decompressive
surgery
.
A
75
-
year
-old
Japanese
woman
with
achondroplasia
was
unable
to
walk
due
to
a
neurological
deficit
of
the
lower
extremities
caused
by
congenital
spinal
stenosis
that
resulted
from
achondroplasia
and
ossification
of
the
ligamentum
flavum
at
the
lumbar
spine
.
Congenital
spinal
stenosis
was
observed
from
L
1
to
L
5
,
and
ossification
of
the
ligamentum
flavum
was
identified
from
L
1
/
2
to
L
3
/
4
.
A
decompressive
laminectomy
from
L
1
to
L
5
and
removal
of
the
ossification
of
the
ligamentum
flavum
were
performed
.
The
patient
's
neurological
symptoms
improved
after
surgery
.
She
could
walk
with
T
-
cane
at
the
time
of
her
four
-
year
follow-up
examination
.
In
this
report
,
we
describe
what
is
,
to
the
best
of
our
knowledge
,
the
first
known
published
case
of
ossification
of
the
ligamentum
flavum
in
congenital
spinal
stenosis
associated
with
achondroplasia
at
the
lumbar
spine
.
Although
resection
of
the
ossification
of
the
ligamentum
flavum
at
the
congenital
spinal
stenosis
at
the
lumbar
spine
was
technically
difficult
because
of
congenital
narrowing
of
the
spinal
canal
,
thickening
of
the
lamina
and
adhesion
of
the
ossified
ligamentum
flavum
,
a
wide
laminectomy
and
resection
of
the
ossification
of
the
ligamentum
flavum
resulted
in
acceptable
improvement
of
the
patient
's
neurological
symptoms
.
Diseases
Validation
Diseases presenting
"but"
symptom
achondroplasia
cushing syndrome
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