Study: Cementless femoral stem revision with the Wagner cone
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The procedure of femoral stem revision is challenging, and bone conservation with less stress shielding is a mandatory effort in these cases.

41 hips of 41 consecutive patients were subjected to femoral revision THA using the Wagner cone prosthesis. The mean age during revision surgery was 56.1 years, and the mean follow-up period was 14.8 years. The clinical results were evaluated, and the femoral component was assessed radiologically.

Results:
--The results showed that the average period from the first operation to revision THA was 8.0 years.

--Additionally, the mean Harris hip score improved from 52 points preoperatively to 83 points at the final follow-up.

--All stems showed bone integration in the radiological evaluation. A subsidence of more than 5 mm was observed in 3 out of 28 femoral stems.

--2 patients needed an acetabular revision for acetabular cup loosening during the follow-up period.

--Furthermore, one patient had recurrent dislocation and had to undergo revision surgery for soft tissue augmentation.

In the course of a final review of femoral stem employing the Wagner cone prosthesis, favorable clinical and long-term radiological results were achieved. In circumstances with somewhat good bone stock, this cementless femoral stem could be an option to revise a femoral stem.

Source: https://josr-online.biomedcentral.com/articles/10.1186/s13018-021-02457-8
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