Bridging Neurosurgery and Orthopedics
While FSPR surgery effectively removes the "neurological handbrake" of spasticity, years of high muscle tone often leave patients with physical contractures and skeletal misalignments. CP-MMA (Cerebral Palsy Muscle Strength & Tone Adjustment) is the surgical bridge that translates nerve-level improvement into physical, functional alignment.
Key Components of CP-MMA
The surgery is highly individualized, often involving multiple procedures in a single session:
- Tendon Lengthening: Safely extending shortened tendons (like the Achilles) to allow full joint extension.
- Muscle Transfers: Moving a muscle's attachment point to change its function (e.g., turning a muscle that causes inward rotation into one that helps with outward rotation).
- Myotomy & Tenotomy: Precise release of over-tight muscle fibers or tendons.
- Skeletal Alignment: Addressing rotational deformities in the long bones or joints caused by chronic spastic pull.
The "Balance" Principle
Prof. Sun Chenyan's CP-MMA technique is grounded in the principle of dynamic balance. We don't just "loosen" tight muscles; we carefully calculate the ratio of strength between opposing muscle groups (agonists and antagonists) to ensure the limb moves smoothly and stays in a neutral, functional position during rest and activity.
Clinical Indication
CP-MMA is recommended for patients who have achieved spasticity reduction but still struggle with fixed joint positions, tip-toe walking (equinus), "scissoring" of the legs, or hand deformities that prevent grasping.
Surgical Outcomes
- Flat-Foot Walking: Correction of equinus foot allows for a natural heel-to-toe gait.
- Increased Stability: Better muscle balance leads to improved center of gravity and reduced fall risk.
- Functional Reach: In upper limbs, CP-MMA helps straighten the wrist and open the palm for grasping objects.
- Enhanced Rehab Efficiency: Corrected limbs respond significantly faster to physical therapy and robotic training.