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Changes in soft tissue interposition after reduction of developmental dislocation of the hip
T Tanaka1, Y Yoshihashi, T Miura
1Department of Orthopedic Surgery, Nagoya University School of Medicine, Japan.
Journal of Pediatric Orthopedics
|January 1, 1994
Summary
Overhead traction (OHT) for developmental dislocation of the hip (DDH) showed normal soft tissue interposition in most cases. However, a thick soft tissue pad at the acetabular floor persisted in over 60% of hips after reduction.
Area of Science:
- Orthopedics
- Pediatric Orthopedics
- Radiology
Background:
- Developmental dislocation of the hip (DDH) is a common pediatric orthopedic condition.
- Soft tissue interposition can complicate hip reduction, particularly with overhead traction (OHT).
- Understanding soft tissue changes is crucial for successful DDH treatment.
Purpose of the Study:
- To assess soft tissue interposition changes in DDH cases treated with OHT.
- To classify soft tissue interposition based on limbus shape and acetabular floor thickness.
- To determine the persistence of soft tissue interposition after reduction.
Main Methods:
- Arthrograms were used to evaluate 111 cases of DDH reduced by OHT.
- Soft tissue interposition was categorized into five types based on limbus morphology.
- Acetabular floor soft tissue thickness was measured and analyzed.
Main Results:
- 82.9% of hips (92/111) exhibited normal soft tissue interposition thickness.
- A significant proportion (61.5%) of hips with a thick acetabular floor soft tissue pad showed persistent interposition after reduction.
- Limbus shape correlated with soft tissue interposition patterns.
Conclusions:
- While most DDH hips treated with OHT have normal soft tissue interposition, persistent thick soft tissue at the acetabular floor is a notable finding.
- This persistent soft tissue may require further investigation or management in specific DDH cases.
- Arthrograms are effective in characterizing soft tissue interposition during DDH treatment.