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Functional analysis of upper limb deformities in osteogenesis imperfecta
Masatoshi Amako1, François Fassier, Reggie C Hamdy
1Department of Orthopedic Surgery, Japan Self-Defense Force Sapporo General Hospital, Sapporo, Hokkaido, Japan.
Journal of Pediatric Orthopedics
|October 27, 2004
Summary
Upper limb deformities in children with osteogenesis imperfecta (OI) are common, especially in type 3. These deformities significantly impact daily living activities, affecting mobility and self-care.
Area of Science:
- Pediatric Orthopedics
- Genetics
- Rehabilitation Medicine
Background:
- Osteogenesis imperfecta (OI) is a genetic disorder characterized by brittle bones.
- Upper limb deformities are a known complication, but their functional impact requires further elucidation.
Purpose of the Study:
- To assess the prevalence and severity of upper limb deformities in children with OI.
- To evaluate the functional outcomes related to these deformities using the Pediatric Evaluation of Disability Inventory (PEDI).
Main Methods:
- Retrospective review of charts and radiographs of 159 children with OI.
- Classification of patients based on the modified Sillence classification (types 1, 3, 4, 5).
- Assessment of upper limb deformities and functional status via PEDI scores.
Main Results:
- 37.1% of patients exhibited upper limb deformities, with type 3 OI showing the highest incidence and severity.
- The humerus was the most frequently affected bone, followed by the ulna and radius.
- Severe deformities significantly lowered PEDI self-care scores, while moderate and severe deformities drastically reduced mobility scores.
Conclusions:
- Upper limb deformities in OI are not merely cosmetic issues.
- These deformities substantially impair functional activities, particularly mobility and self-care, in affected children.