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Articular cartilage abnormalities in dysplastic hips without joint space narrowing
1Department of Orthopaedic Surgery, Osaka University Medical School, Suita, Japan.
Clinical Orthopaedics and Related Research
|February 24, 2001
Summary
Early hip cartilage damage is common, even before X-rays show problems. Sagittal magnetic resonance imaging (MRI) is best for detecting these subtle abnormalities, aiding early diagnosis of hip conditions.
Area of Science:
- Orthopedics
- Radiology
- Medical Imaging
Background:
- Hip dysplasia often presents with subtle early changes.
- Conventional radiography may not detect early cartilage abnormalities.
Purpose of the Study:
- To investigate the prevalence of cartilage abnormalities in hips using 3D MRI.
- To assess the correlation between cartilage defects, patient age, and hip pain.
- To compare the diagnostic utility of coronal and sagittal MRI planes for early cartilage lesions.
Main Methods:
- Three-dimensional magnetic resonance imaging (MRI) was performed on 25 normal hips and 70 dysplastic hips.
- Patients had clinical symptoms but no radiographic joint space narrowing.
- Abnormalities were assessed in acetabular and femoral cartilage, focusing on the anterosuperior region.
Main Results:
- A high prevalence of cartilage abnormalities (44% acetabular, 7% femoral) was detected in dysplastic hips.
- Cartilage defects showed a significant correlation with patient age and hip pain severity.
- Sagittal MRI identified abnormalities in 97% of affected hips, compared to 35% for coronal MRI.
Conclusions:
- Early-stage cartilage abnormalities are prevalent in symptomatic hips without radiographic joint narrowing.
- Sagittal plane MRI is a highly sensitive tool for detecting early cartilage defects.
- Advanced imaging like MRI is crucial for the early diagnosis and management of hip conditions.