The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform

Ola Wahlström - One of the best experts on this subject based on the ideXlab platform.

  • 20 year results of McKee Farrar versus charnley Prosthesis
    Clinical Orthopaedics and Related Research, 1996
    Co-Authors: Sven-arne Jacobsson, Krister Djerf, Ola Wahlström
    Abstract:

    The results of 107 consecutive McKee-Farrar and 70 Charnley total hip arthroplasties performed in 169 patients between 1975 and 1976 are reviewed. At an average followup of 20 years (range, 19-21 years), 29 patients with 20 McKee-Farrar and 11 Charnley prostheses were available for clinical and radiologic evaluation; 102 patients (107 hips) had died, 3 patients were lost to followup, and 5 patients (6 hips) were unavailable for review because of medical problems. There were 5 revisions for sepsis and 1 Girdlestone procedure for recurrent dislocation. Sixteen McKee-Farrar and 8 Charnley prostheses were revised for aseptic loosening, giving a 20-year aseptic probability of survival of 77% and 73%, respectively. Radiographic signs of loosening were present in 52% of the surviving prostheses. Clinical scores showed weak correlation with the radiographic loosening in both groups, and 18 McKee-Farrar and 8 Charnley prostheses were still considered satisfactory by the patients. The mean annual linear polyethylene wear was 0.12 mm. Osteolytic lesions were observed in association with 2 McKee-Farrar and 5 Charnley prostheses in surviving hips. The long term results of the McKee-Farrar Prosthesis are comparable with those of the low friction arthroplasty in this series. Wear of the polyethylene bearing and accumulation of polyethylene particles in the periprosthetic tissue may become an increasing problem. Second generation all metal implants seem to be worth considering in patients with long life expectancy.

  • A comparative study between McKee-Farrar and Charnley arthroplasty with long-term follow-up periods.
    Journal of Arthroplasty, 1990
    Co-Authors: Sven-arne Jacobsson, Krister Djerf, Ola Wahlström
    Abstract:

    Abstract One hundred seventy-seven consecutive total hip arthroplasties on 169 patients, 107 with a McKee-Farrar Prosthesis and 70 with a Charnley low-friction arthroplasty, were followed in a prospective study. Fifty-five patients (31%) representing 55 hips died during the study period. Four (2%), two McKee-Farrar and two Charnley, were lost to follow-up study. The remaining 55 McKee-Farrar and 41 Charnley hips were evaluated after a mean follow-up period of 11.5 years (range, 10.1–13.5 years). Twenty-two (12%) of the hips had been revised. A survival study was performed and the two techniques were compared with regard to walking ability, Harris hip score, and radiologic assessment. No major differences were observed. The mean annual revision rate in this series was 1.3%. Walking distance increased from 200 m before operation to 2,000 m 1 year after operation and then remained constant during the observation time. The results, using the Harris hip score, were good or excellent (> 80 points) in 47%. Thirty hips (32%) showed signs of prosthetic loosening; 17 of these caused pain on weightbearing occasionally or regularly and 13 caused no pain at all.

Sven-arne Jacobsson - One of the best experts on this subject based on the ideXlab platform.

  • 20 year results of McKee Farrar versus charnley Prosthesis
    Clinical Orthopaedics and Related Research, 1996
    Co-Authors: Sven-arne Jacobsson, Krister Djerf, Ola Wahlström
    Abstract:

    The results of 107 consecutive McKee-Farrar and 70 Charnley total hip arthroplasties performed in 169 patients between 1975 and 1976 are reviewed. At an average followup of 20 years (range, 19-21 years), 29 patients with 20 McKee-Farrar and 11 Charnley prostheses were available for clinical and radiologic evaluation; 102 patients (107 hips) had died, 3 patients were lost to followup, and 5 patients (6 hips) were unavailable for review because of medical problems. There were 5 revisions for sepsis and 1 Girdlestone procedure for recurrent dislocation. Sixteen McKee-Farrar and 8 Charnley prostheses were revised for aseptic loosening, giving a 20-year aseptic probability of survival of 77% and 73%, respectively. Radiographic signs of loosening were present in 52% of the surviving prostheses. Clinical scores showed weak correlation with the radiographic loosening in both groups, and 18 McKee-Farrar and 8 Charnley prostheses were still considered satisfactory by the patients. The mean annual linear polyethylene wear was 0.12 mm. Osteolytic lesions were observed in association with 2 McKee-Farrar and 5 Charnley prostheses in surviving hips. The long term results of the McKee-Farrar Prosthesis are comparable with those of the low friction arthroplasty in this series. Wear of the polyethylene bearing and accumulation of polyethylene particles in the periprosthetic tissue may become an increasing problem. Second generation all metal implants seem to be worth considering in patients with long life expectancy.

  • A comparative study between McKee-Farrar and Charnley arthroplasty with long-term follow-up periods.
    Journal of Arthroplasty, 1990
    Co-Authors: Sven-arne Jacobsson, Krister Djerf, Ola Wahlström
    Abstract:

    Abstract One hundred seventy-seven consecutive total hip arthroplasties on 169 patients, 107 with a McKee-Farrar Prosthesis and 70 with a Charnley low-friction arthroplasty, were followed in a prospective study. Fifty-five patients (31%) representing 55 hips died during the study period. Four (2%), two McKee-Farrar and two Charnley, were lost to follow-up study. The remaining 55 McKee-Farrar and 41 Charnley hips were evaluated after a mean follow-up period of 11.5 years (range, 10.1–13.5 years). Twenty-two (12%) of the hips had been revised. A survival study was performed and the two techniques were compared with regard to walking ability, Harris hip score, and radiologic assessment. No major differences were observed. The mean annual revision rate in this series was 1.3%. Walking distance increased from 200 m before operation to 2,000 m 1 year after operation and then remained constant during the observation time. The results, using the Harris hip score, were good or excellent (> 80 points) in 47%. Thirty hips (32%) showed signs of prosthetic loosening; 17 of these caused pain on weightbearing occasionally or regularly and 13 caused no pain at all.

T Rybak - One of the best experts on this subject based on the ideXlab platform.

Krister Djerf - One of the best experts on this subject based on the ideXlab platform.

  • 20 year results of McKee Farrar versus charnley Prosthesis
    Clinical Orthopaedics and Related Research, 1996
    Co-Authors: Sven-arne Jacobsson, Krister Djerf, Ola Wahlström
    Abstract:

    The results of 107 consecutive McKee-Farrar and 70 Charnley total hip arthroplasties performed in 169 patients between 1975 and 1976 are reviewed. At an average followup of 20 years (range, 19-21 years), 29 patients with 20 McKee-Farrar and 11 Charnley prostheses were available for clinical and radiologic evaluation; 102 patients (107 hips) had died, 3 patients were lost to followup, and 5 patients (6 hips) were unavailable for review because of medical problems. There were 5 revisions for sepsis and 1 Girdlestone procedure for recurrent dislocation. Sixteen McKee-Farrar and 8 Charnley prostheses were revised for aseptic loosening, giving a 20-year aseptic probability of survival of 77% and 73%, respectively. Radiographic signs of loosening were present in 52% of the surviving prostheses. Clinical scores showed weak correlation with the radiographic loosening in both groups, and 18 McKee-Farrar and 8 Charnley prostheses were still considered satisfactory by the patients. The mean annual linear polyethylene wear was 0.12 mm. Osteolytic lesions were observed in association with 2 McKee-Farrar and 5 Charnley prostheses in surviving hips. The long term results of the McKee-Farrar Prosthesis are comparable with those of the low friction arthroplasty in this series. Wear of the polyethylene bearing and accumulation of polyethylene particles in the periprosthetic tissue may become an increasing problem. Second generation all metal implants seem to be worth considering in patients with long life expectancy.

  • A comparative study between McKee-Farrar and Charnley arthroplasty with long-term follow-up periods.
    Journal of Arthroplasty, 1990
    Co-Authors: Sven-arne Jacobsson, Krister Djerf, Ola Wahlström
    Abstract:

    Abstract One hundred seventy-seven consecutive total hip arthroplasties on 169 patients, 107 with a McKee-Farrar Prosthesis and 70 with a Charnley low-friction arthroplasty, were followed in a prospective study. Fifty-five patients (31%) representing 55 hips died during the study period. Four (2%), two McKee-Farrar and two Charnley, were lost to follow-up study. The remaining 55 McKee-Farrar and 41 Charnley hips were evaluated after a mean follow-up period of 11.5 years (range, 10.1–13.5 years). Twenty-two (12%) of the hips had been revised. A survival study was performed and the two techniques were compared with regard to walking ability, Harris hip score, and radiologic assessment. No major differences were observed. The mean annual revision rate in this series was 1.3%. Walking distance increased from 200 m before operation to 2,000 m 1 year after operation and then remained constant during the observation time. The results, using the Harris hip score, were good or excellent (> 80 points) in 47%. Thirty hips (32%) showed signs of prosthetic loosening; 17 of these caused pain on weightbearing occasionally or regularly and 13 caused no pain at all.

łukasz łapaj - One of the best experts on this subject based on the ideXlab platform.