الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The hip joint is a stable, major weight-bearing joint with significant mobility. Hip pain is a common problem in patients of all ages. It can be attributed to many causes, such as osteonecrosis, transient osteoporosis or bone marrow edema, trauma with suspected occult fracture and stress fractures, labral tears, osteochondritis dissecans, tendon tears, septic arthritis, osteomyelitis, ,and other conditions common to all joints, such as bursitis, synovial osteochondromatosis, inflammatory conditions, and bone and soft-tissue tumors .
Different diagnostic imaging modalities play an important role in the diagnosis and staging of the hip joint diseases but due to high soft-tissue contrast resolution of MRI combined with recent technologic developments, variety of conditions involving the hip joint and adjacent bony structures can be well evaluated using MRI, with or without contrast material.
The aim of this study was to evaluate the diagnostic value of MRI in assessment of painful hip joint.
This study included one hundred patients, fifty-five females (55%) and forty-five males (45%), their ages ranged from 10 to 60 years with a mean age of 35 years complaining of hip pain. The most frequently involved age group was the group > 30-40 years in both males and females.
Based on the positive findings obtained by MRI, 15% of the patients had normal studies, however abnormal studies were determined in the remaining 85% of the patients. The final diagnoses of the 85 patients with abnormal scan were avascular necrosis in 25 (25%) patients, osteoarthritis in 10 (10%) patients, migratory osteoporosis in 10 (10%) patients , transient synovitis in 10 (10%) patients, septic arthritis in 7 (7%) patients, Perthe’s disease in 5 (5%) patients, extraarticular tumor in 5 (5 %) patients, intramuscular inflammatory lesions in 5 (5%) patients , slipped femoral capital epiphysis in 4 (4%) patients, stress fractures in 4 (4%) patients.
The final diagnoses achieved through the MRI findings were confirmed by surgical data in 20 patients, culture and sensitivity of the aspirated joint effusion in 10 patients, histopathology in 5 patients and follow up by clinical, laboratory and other imaging studies in 50 patients.
The sensitivity of MRI in diagnosis of different hip joint diseases was 88% of patients with avascular necrosis, 80 % of patients with osteoarthritis, 90 % of patients with migratory osteoporosis, 100 % of patients with transient synovitis, 72 % of patients with septic arthritis, 80 % of patients with Perthe’s disease, 80 % of patients with extraarticular tumor, 100 % of patients with intramuscular inflammatory lesions, 75 % of patients with slipped femoral capital epiphysis and 100 % of patients with Stress fractures.
Finally we conclude that MRI is sensitive imaging modality for diagnosis and characterizing of different hip joint lesions and accurate for assessing the full extent of osseous, chondral and soft tissue abnormalities of the hip joint.