Abstract Objective To investigate the mid-term effect of total hip replacement in patients with osteoarthritis secondary to pyogenic hip arthritis.Methods From January 2007 to November 2012,7 adolescent patients with hip osteoarthritis caused by hip infection were treated,including 4 males and 3 females,aged 34~54 years,with an average age of 42.57 years.Hip joint infection occurred in childhood or adolescence.The age of infection ranged from 4 to 12 years,with an average age of 6.86 years.The average infection time was 35.71 years (28~42 years).Results All patients were followed up for 41 to 80 months,with an average of 52 months.The lower limbs of 7 patients were shortened 3~11 cm before operation,with an average of 5.9 cm.The unequal length of lower limbs improved 1~3 cm after operation,with an average of 1.5 cm.Harris score increased from 49.85 points (27~70 points) before operation to 90.29 points (77~95 points) after operation.During the follow-up period,no prosthesis loosening or osteolysis occurred in all patients.Conclusion Total hip arthroplasty is safe and satisfactory for patients with osteoarthritis sequelae of pyogenic hip arthritis,and can effectively relieve joint pain.
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