Motor control assessment for rhizotomy in cerebral palsy
1Department of Rehabilitation, Chang Gung Children and Memorial Hospital, Taipei, Taiwan.
Insights
Polyelectromyography (PEMG) patterns can help select spastic cerebral palsy children for selective posterior rhizotomy (SPR). Specific PEMG patterns predict ambulatory success post-SPR, guiding treatment decisions.
Area of Science:
- Neurology
- Orthopedics
- Rehabilitation Medicine
Background:
- Spastic cerebral palsy (CP) significantly impacts motor function and ambulation.
- Selective Posterior Rhizotomy (SPR) is a surgical option for managing spasticity in CP.
- Accurate patient selection is crucial for optimizing SPR outcomes.
Purpose of the Study:
- To evaluate the utility of motor control assessment using polyelectromyography (PEMG) for selecting pediatric spastic CP patients for SPR.
- To correlate pre-operative PEMG patterns with post-operative ambulatory outcomes.
Main Methods:
- Forty children with spastic CP (ages 3-16) were categorized by ambulatory status: independent, dependent, and nonambulatory.
- Motor control was assessed using polyelectromyography (PEMG) and clinical gait analysis (DynoGraphy) before and 12 months after SPR.
- PEMG patterns were classified based on electromyographic activity during hip/knee movements.
Main Results:
- PEMG patterns 2-3 correlated with independent ambulatory ability, while patterns 6-7 indicated interference with ambulation.
- Ambulatory groups showed significant PEMG pattern improvement post-SPR (P < 0.05); nonambulators did not.
- Children with proximal/distal co-contraction showed better SPR outcomes than those with diffuse co-contraction or reduced electromyography.
Conclusions:
- PEMG pattern analysis is a valuable tool for identifying spastic CP patients likely to benefit from SPR.
- This assessment can aid clinicians in selecting appropriate candidates for SPR to achieve favorable functional improvements.
Objective:
To apply motor control assessment for selection of appropriate spastic cerebral palsy children to receive selective posterior rhizotomy (SPR).
Design:
Forty children with spastic cerebral palsy (3-16 yr) were divided into three groups: "independent ambulator," "dependent ambulator," and "nonambulator." Another 18 healthy children were selected as the control group. Both motor control (tested by using polyelectromyography (PEMG)) and clinical ambulatory capability were assessed within 1 mo before SPR and 12 mo after. PEMG patterns were classified into seven patterns according to electromyographic activities during hip/knee flexion and extension. Gait patterns, which were analyzed by computer DynoGraphy, were classified into four patterns for children with ambulatory capability.
Results:
PEMG and gait patterns were correlated with ambulatory ability. PEMG patterns 2-3 could predict independent ambulatory ability, whereas patterns 6-7 will interfere with ambulatory ability. PEMG patterns showed significant improvement after SPR in the ambulatory groups (P < 0.05), whereas they did not improve in the nonambulator group. Children with cerebral palsy with co-contraction of proximal/distal muscles had better results after SPR, whereas those with diffuse co-contraction or reduced electromyography activities had poor results.
Conclusions:
PEMG patterns may allow the physician to select the appropriate children with spastic cerebral palsy to receive SPR with good results.
