Osteonics hip systemの臨床成績とX線学的変化

抄録

We performed total hip arthroplasy (THA) using the Osteonics hip system which consists of MS type, AD type and HA type. All patients underwent THA from 1990 to 1997 and were followed up for more than five years. There were 32 hips (4 males and 28 females) in 29 patients with an average age of 53 years (range: 34 to 64). The follow-up time ranged from 5.2 years to 10.9 years, averaging 8.2 years. MS type was used in 12 patients, AD type in 14 patients, and HA type in 6 patients. We evaluated the clinical results using the JOA score, and change in migration, subsidence, and osteolysis on X-ray. During the follow-up period of about 6 years, the JOA score of the HA type was higher than the other types. No migration, subsidence, or osteolysis was found in any type, but osteogenesis was detected in the HA type for the most port.