Bicon-threaded cup for treating hip rheumatoid arthritis in 24 cases / 中国组织工程研究

ABSTRACT

OBJECTIVE:To observe the clinical effect of Zweymüller bicon-threaded cup in total hip arthroplasty for treating hip rheumatoid arthritis.METHODS:A retrospective analysis was performed on 24 cases (39 hips) of rheumatoid arthritis selected at the Department of Joint surgery of the Affiliated Provincial Hospital of Shandong University,including 8 males (14 hips) and 16 females (25 hips),aged from 32 to 64 years (average 49.2 years old),course of disease being from 4 to 15 years (average 8.5 years).All the cases the state of wound healing and perioperativ complications were examined,and the position of acetabulum prosthesis was observed by X-ray film.RESULTS:All patients were followed up,and the follow-up time ranged from 14 to 62 months (average 37.5 months).They were all obtained first-stage wound healing,and two cases of gastrocnemius vein thrombus were found among them,occurred by non-operation.All patients were free from pain with stable fixation and mobility increasing.The process of osseo integration being well,the radiolucent line and radiographic loosening of acetabulum prosthesis and sedimentation of stem were not found on antero-posterior pelvis-radiograph and lateral radiograph of ipsilateral hip.The Harris hip score increased from preoperative 33.5 points (17-46 points) to postoperative 86.5 points (79-96 points) at 3 months.There were no complication appeared such as dislocation,fracture and nerve injury.rheumatoid arthritis.