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Comparative Study
. 2024 Aug 5;14(1):18060.
doi: 10.1038/s41598-024-68696-x.

Comparison of mid-term clinical and radiological results of short and conventional femoral stems in total hip arthroplasty

Serhat Akçaalan  1 , Batuhan Akbulut  2 , Ceyhun Çağlar  2   3 , Mahmut Uğurlu  2   3
Affiliations
Comparative Study

Comparison of mid-term clinical and radiological results of short and conventional femoral stems in total hip arthroplasty

Serhat Akçaalan et al. Sci Rep. .

Abstract

This study aims to answer the question: Which are superior-conventional or short femoral stems?. An Optymis stem was used as a short-femoral stem, and an Accolade II stem was used as a conventional-femoral stem. There were 95 patients in the short femoral stem group (Group 1) and 90 in the conventional stem group (Group 2). The SF-36 Life Quality Score, thigh pain, and the Harris Hip Score were used to evaluate the patients' clinical outcomes. Pre-operative, immediate post-operative, and final follow-up x-rays were used for radiological evaluation. Stem varus/valgus alignment, hip offset changing, acetabular anteversion/inclination changing, femoral migration, acetabular migration, periarticular ossification, and osteointegration evaluation were assessed for both groups. The mean follow-up time was 5.5 years for Group 1 and 5.2 years for Group 2. No significant difference existed between the two groups in terms of clinical scores (Harris Hip Score, SF-36). Thigh pain was significantly higher in Group 2 (p = 0.0001). As for radiological parameters, Group 1 exhibited more varus position-related results. In terms of angular stability, Group 1 was found to be more unstable than Group 2 (p = 0.0001). The power to reconstruct femoral offset was superior in Group 1. Periarticular ossification was more frequent in Group 2. Femoral osteointegration was denser proximally in Group 1 and distally in Group 2. When mid-term radiological and clinical results of both femoral stems are evaluated, they have no superiority over each other.

Keywords: Conventional femoral stem; Femoral stem; Hip replacement; Short femoral stem.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Flow chart of patient selection.
Figure 2
Figure 2
Reference lines used for acetabular migration measurement (A), reference measurements used for acetabular inclination measurement and acetabular anteversion calculation (B), femoral stem shaft angle measurement (C), pre-operative femoral, acetabular and total off-set measurement (D), post-operative femoral, acetabular and total off-set measurement (E), reference lines used for femoral stem migration (F).
Figure 3
Figure 3
Showing Gruen zones of short and conventional femoral stem.
Figure 4
Figure 4
Demonstration of changing femoral, acetabular, and total off-set.
See this image and copyright information in PMC

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