Takashi Matsuo, M.D.

Cerebral Palsy:
Spasticity-control Surgery
TaTakashi Matsuo, M.D.
  A new revolutionary concept
and surgical techniques
are documented,
leading the treatment
of cerebral palsy in a new era
What is OSSCS?:
OSSCS is an orthopaedic procedure desaigned to control spasticity and athetosis
in cerebral palsy(Fig.1ABCD).
Fig. 1: Fundamentals of orthopaedic          spasticity-control surgery.
A: Antigravity muscles which support the body to
be upright.
B: Multiarticular muscles co-exist in human body.
C: Black lines show hypertonicity of the multiarticular
D: The multiarticular muscles are lengthened or
sectioned selectively, then hypertonicity of these
muscles are reduced. The monoarticular muscles are
preserved and facilitated.
Encouraging results and a new path:
By combing OSSCS with conventional orthpaedic surgery,we can deal with a wide range of
problems in motor activities and ADL with encouraging results while providig a new path for
functional improvements in cerebral palsy (Fig.6AB,8AC,96AB,109AB,113AB).
Fig. 6: A 5-year-old boy
Spastic diplegia,
6A: Crouched posture with marked
flexion and adduction
deformity of the hips was
6B: Seven years after OSSCS on the
hips,, knees and foot and ankle.
He is now a community
ambulator with crutches. He is
also an independent ambulator
in the house.
Fig. 8: 18-year-old male,
Athetosis quadriplegia
8A: Involuntary movement
and deformities of the fingers,
thumb and wrist with rigidity
were characteristic.
8C: After OSSCS, rigidity and
deformity of the fingers,
thumb and wrist were reduced,
and dexterity of the fingers improved.
Fig. 96: Improvements in gait
after OSSCS
96A: A 9-year-old girl.
Spastic diplegia
Preoperatively, crouched
posture with marked equinus
in feet and internal rotation of
both the hips were observed.
Lumbar lordosis was also
96B: Postoperatively, correction of
equinus was achieved.
Crouched posture was also
corrected without operations on
the hips and knees. Stability
during gait was also improved.