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The Evolution of Proximal Femur Hemiepiphysiodesis in Children with Cerebral Palsy
Trevor Blanchard1, James J McCarthy1, Verena M Schreiber1
1Division of Orthopaedic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
Insights
Proximal femoral guided growth offers a minimally invasive option for hip displacement in children with cerebral palsy (CP). This technique shows promise in improving hip alignment and may delay or reduce the need for major surgery.
Area of Science:
- Orthopedics
- Pediatric Musculoskeletal Disorders
- Cerebral Palsy Research
Background:
- Hip displacement is a progressive complication in children with cerebral palsy (CP), often linked to coxa valga and muscle imbalance.
- Traditional treatments for advanced deformity include proximal femoral and pelvic osteotomies.
Purpose of the Study:
- To review the current evidence on proximal femoral guided growth (PFGG) as a treatment for hip displacement in children with CP.
- To summarize indications, surgical techniques, outcomes, complications, and future research directions for PFGG.
Main Methods:
- Narrative review of existing literature, including retrospective case series and one systematic review.
- Analysis of radiographic outcomes, complications, and patient factors influencing success.
Main Results:
- PFGG demonstrates improvements in migration percentage, head-shaft angle, and acetabular index, especially when initiated early (migration <50%) and combined with soft tissue release.
- Younger age and less severe hip displacement correlate with better outcomes.
- The most frequent complication is implant migration, often requiring revision, but serious adverse events are rare.
Conclusions:
- Proximal femoral guided growth is a viable intermediate treatment option for selected children with CP and hip displacement, potentially delaying or avoiding reconstructive surgery.
- Further high-quality prospective studies are necessary to establish long-term safety, efficacy, and optimal integration into treatment algorithms.
Abstract:
Hip displacement is a common and progressive musculoskeletal complication in children with cerebral palsy (CP), often driven by coxa valga, muscle imbalance, and spasticity. While proximal femoral and pelvic osteotomies remain the standard treatment for advanced deformity, proximal femoral guided growth (temporary medial hemiepiphysiodesis) has emerged as a minimally invasive alternative for selected patients with remaining growth potential. This narrative review summarizes the current evidence regarding indications, surgical technique, radiographic outcomes, complications, and future directions for proximal femoral guided growth in CP. The literature, consisting primarily of retrospective case series and one systematic review, consistently demonstrates improvements in migration percentage, head-shaft angle, and acetabular index, particularly when treatment is performed early in children with migration percentages below 50% and combined with soft tissue release. Younger age and less severe hip displacement are associated with more favorable outcomes. The most common complication is screw migration as the physis grows off the implant, frequently necessitating revision, although serious complications are uncommon. Concerns remain regarding premature physeal closure and potential femoral head deformity at skeletal maturity. Current evidence supports proximal femoral guided growth as a valuable intermediate treatment that may delay or reduce the need for reconstructive osteotomy in appropriately selected patients; however, high-quality prospective studies are needed to define better its long-term safety, efficacy, and optimal role in treatment algorithms.
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