Upper extremity tendon transfers in cerebral palsy: electromyographic and functional analysis
Insights
Tendon transfers improved function in children with spastic hemiplegia. Postoperative analysis revealed beneficial changes in muscle electrical activity, enhancing understanding of these procedures in cerebral palsy.
Area of Science:
- Orthopedic Surgery
- Pediatric Neurology
- Rehabilitation Medicine
Background:
- Spastic hemiplegia, a common form of cerebral palsy, often impairs upper extremity function.
- Tendon transfer surgery is a common intervention to improve hand and wrist function in affected children.
Purpose of the Study:
- To evaluate the effectiveness of tendon transfers in improving functional outcomes for children with spastic hemiplegia.
- To analyze changes in muscle electrical activity following tendon transfer surgery.
Main Methods:
- Preoperative and postoperative assessments included muscle grading, functional video recordings, and electromyography (EMG) in 12 pediatric patients.
- Postoperative EMG data were collected from 16 transferred tendons in eight patients during functional tasks.
Main Results:
- All patients demonstrated clinical improvement at an average 20-month follow-up.
- Four of the 16 transferred muscles exhibited altered electrical activity postoperatively.
- Specifically, three continuously firing muscles became phasic, and one muscle shifted its activation phase.
Conclusions:
- Tendon transfers lead to functional improvements in children with spastic hemiplegia.
- Pre- and postoperative EMG combined with video analysis offers valuable insights into tendon transfer mechanics in cerebral palsy.
- These findings contribute to a better understanding of tendon function post-transfer in this patient population.
Abstract:
This study was undertaken to evaluate tendon transfers in a group of children with spastic hemiplegia. Muscle grading, video recordings of function, and electromyographs were performed on 12 patients preoperatively. Postoperative electromyograms were obtained on 16 transferred tendons in eight patients as the children performed assigned tasks. Clinical evaluation demonstrated improvement in all patients at follow-up, which averaged 20 months. Four of the 16 muscles showed changes in their electrical activity postoperatively. Three muscles that fired continuously became phasic, and one muscle changed phase to match its recipient. Pre- and postoperative electromyography with video analysis provided a more complete understanding of the characteristics of tendon function with tendon transfers in cerebral palsy.
