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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 28 - 28
1 Sep 2012
Vinje T Gjertsen J Lie S Engesaeter L Havelin L Furnes O Matre K Fevang J
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Background

Systematic reviews disagree, but some recent studies have shown better function and less pain after operation with bipolar hemiarthroplasty compared to fixation by two screws in elderly patients operated for displaced femoral neck fractures. There is still uncertainty regarding the mortality associated with both procedures.

Aim of the study

To investigate mortality and the risk factors for death among patients with displaced femoral neck fractures within the first three years after surgery, comparing operation with bipolar hemiarthroplasty (HA) and internal fixation (IF) by two screws.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 30 - 30
1 Sep 2012
Vinje T Fevang J Engesaeter L Lie S Havelin L Matre K Gjertsen J Furnes O
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Background

A well conducted randomised study found similar functional results for patients with displaced femoral neck fracture comparing operation with a modern uncemented bipolar hemiarthroplasty with a cemented bipolar hemiarthroplasty. The mortality associated with the two procedures has not been sufficiently investigated.

Aim of study

To investigate the mortality and the risk factors for death among patients with displaced femoral neck fractures the first year after surgery, comparing operation with modern uncemented and cemented bipolar hemiarthroplasty (HA).


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 9 - 9
1 Sep 2012
Gothesen O Espehaug B Havelin L Petursson G Furnes O
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Background

Improving positioning and alignment by the use of computer assisted surgery (CAS) might improve longevity and function in total knee replacements. This study evaluates the short term results of computer navigated knee replacements based on data from a national register.

Patients and Methods

Primary total knee replacements without patella resurfacing, reported to the Norwegian Arthroplasty Register during the years 2005–2008, were evaluated. The five most common implants and the three most common navigation systems were selected. Cemented, uncemented and hybrid knees were included. With the risk for revision due to any cause as the primary end-point, 1465 computer navigated knee replacements (CAS) were evaluated against 8214 conventionally operated knee replacements (CON). Kaplan-Meier survival analysis and Cox regression analysis with adjustment for age, sex, prosthesis brand, fixation method, previous knee surgery, preoperative diagnosis and ASA category were used.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 563 - 563
1 Sep 2012
Petursson G Fenstad A Havelin L Gothesen O Röhrl S Furnes O
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Background

There are few studies of total knee replacements with cemented tibia and uncemented femur (hybrid). Previous studies have not shown any difference in revision rate between different fixation methods, but these studies had few hybrid prostheses. This study evaluates the results of hybrid knee replacements based on data from the Norwegian Arthroplasty Register (NAR).

Patients and Methods

Primary total knee replacements without patella resurfacing, reported to the NAR during the years 1999–2009, were evaluated. Hinged-, posterior stabilized- and tumor prostheses were excluded. LCS- and Profix prostheses with conforming plus bearing were included. With the risk for revision at any cause as the primary end-point, 2945 hybrid knee replacements (HKR) were evaluated against 20838 cemented knee replacements (CKR). Kaplan-Meier survival analysis and Cox regression analysis with adjustment for age, sex and preoperative diagnosis were used.