Paper35-Histological-biological-effects-granulation-tissue-loosened hip-development-osteolysis-J-Ort

Many histological studies have shown the existence of

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Unformatted text preview: a long-term complication. Many histological studies have shown the existence of polyethylene Offprint requests to: T. Matsumoto Received: January 27, 2004 / Accepted: June 3, 2004 Eighty-two samples were obtained from 40 patients at revision surgery for aseptic loosening of the hip. Informed consent was obtained after receiving approval from the local ethics committee. The samples were 23 capsules, 23 granulation tissues from around the stem (femoral), and 36 from around the socket (acetabular). The mean patient age was 67 years at revision. The mean interval between the initial surgery and revision surgery was 14 years. The first appearance of loosening could not be identified in 18 patients, because osteolysis was already present when they visited our hospital. Mechanical instability was determined by subsidence or S. Ito et al.: Granulation tissue in osteolysis 479 Table 1. Patients and prostheses Case number (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) (17) (18) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) (29) (30) (31) (32) (33) (34) (35) (36) (37) (38) (39) (40) Sex Age Duration of implant (y) Duration of osteolysis (y) Original disease Type of...
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