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Pathological fractures secondary to unicameral bone cysts
1Department of Orthopaedic Surgery, Wonju Christian Hospital, Yonsei University Wonju College of Medicine, Republic of Korea.
International Orthopaedics
|February 1, 1994
Summary
Unicameral bone cysts in children pose a fracture risk, especially when occupying over 85% of bone width. Fractures in these cysts rarely accelerate healing and often lead to recurrence.
Area of Science:
- Pediatric Orthopedics
- Skeletal Radiology
- Pediatric Bone Pathology
Background:
- Unicameral bone cysts (UBCs) are common benign bone lesions in children.
- Pathological fractures through UBCs can complicate management.
- Predicting fracture risk and healing response is crucial for treatment planning.
Purpose of the Study:
- To identify risk factors for pathological fractures in pediatric unicameral bone cysts.
- To evaluate whether pathological fractures accelerate healing in UBCs.
- To determine the typical locations and characteristics of UBCs prone to fracture.
Main Methods:
- Retrospective review of 75 pediatric patients with unicameral bone cysts.
- Analysis of 52 pathological fractures occurring in these cysts.
- Radiographic assessment of cyst size, location, and bone occupancy.
Main Results:
- Most UBCs were located in the metaphysis of long bones, particularly the humerus and femur.
- Cysts occupying >85% of bone width in both anteroposterior and lateral views were associated with pathological fractures.
- Fractures did not accelerate healing and often resulted in cyst recurrence and enlargement.
Conclusions:
- Large unicameral bone cysts (>85% bone occupancy) are at high risk for pathological fracture.
- Fracture through a UBC does not typically promote healing and may lead to recurrence.
- Early identification of high-risk UBCs is essential for appropriate management and prevention of fractures.