Background: Selective dorsal rhizotomy (SDR) is a well accepted neurosurgical procedure performed for the relief of spasticity interfering with motor function in children with spastic cerebral palsy (CP). The goal is to improve function, but long-term outcome studies are rare. The aims of this study were to evaluate long-term functional outcomes, safety and side effects during five postoperative years in all children with diplegia undergoing SDR combined with physiotherapy.

Aim  The aim of this study was to explore changes in motor function up to 10 years after selective dorsal rhizotomy (SDR). Method  The participants comprised 29 children (20 males, nine females) with bilateral spastic diplegia who were consecutively operated on at a median age of 4 years and 3 months and followed until a median age of 15 years. SDR was combined with physiotherapy and regular follow‐up visits. The distribution of preoperative Gross Motor Function Classification System (GMFCS) levels was as follows: I, n=1; II, n=7; III, n=8; IV, n=12; and V, n=1. Muscle tone in hip flexors, hip adductors, knee flexors, and plantar flexors was assessed with the modified Ashworth scale, passive range of motion in hip abduction, popliteal angle, maximum knee extension, dorsiflexion of the foot was measured with a goniometer, and gross motor function was assessed using the Gross Motor Function Measure (GMFM‐66). The results were compared with preoperative values, taking into account age at the time of SDR. Results  After 10 years, muscle tone in hip flexors, hip adductors, knee flexors and plantar flexors was normalized in 19, 24, 13 and 23 participants respectively; mean change in passive range of motion ranged from −2.0° to 8.6°, and the mean increase in GMFM‐66 was 10.6. Changes in GMFM‐66 were associated with preoperative GMFCS level and GMFM‐66 scores. Interpretation  Children who underwent SDR and physiotherapy and were regularly followed up by an experienced team showed improved gross motor function for up to 10 years postoperatively.

All 3 scoring options showed large longitudinal construct validity in the long-term follow-up. The GMFM-88 total and goal total scores revealed large changes in gross motor function earlier postoperatively than the GMFM-66 scores.

AIM To explore changes in performance in daily activities (self-care and mobility) 10 years after selective dorsal rhizotomy (SDR).METHOD Twenty-four children with bilateral spastic cerebral palsy were followed; the median age at SDR was 4 years 1 month (range 2y 5mo-6y 4mo) and at 10-year follow-up was 14 years 6 months (range 12y 3mo-16y 9mo). The preoperative Gross Motor Function Classification System (GMFCS) levels were: I (n=1), II (n=7), III (n=4), IV (n=11), and V (n=1). The Pediatric Evaluation of Disability Inventory (PEDI) was used to assess performance in functional skills, caregiver assistance, and frequency of modifications and adaptive equipment (MAE) in self-care and mobility domains. Changes were analysed in relation to preoperative GMFCS levels, PEDI scores, and age at operation.RESULTS All scores improved significantly (p<0.01) during the first 5 years in patients assigned to GMFCS levels I-III and IV-V. Between 5 years and 10 years, changes were seen in patients grouped in GMFCS levels I-III in the functional skills, mobility (p=0.04), caregiver assistance self-care (p=0.03), and caregiver assistance mobility (p=0.03) domains. Those grouped in GMFCS levels IV-V showed small changes between 5 years and 10 years after surgery. Changes were dependent on the preoperative GMFCS levels in all domains; caregiver assistance, self-care and mobility changes were dependent on preoperative values. The use of MAE increased in participants in GMFCS levels IV-V.INTERPRETATION Children who underwent SDR and physiotherapy improved in functional performance in self-care and mobility and were more independent 10 years postoperatively.