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. 2020 Dec 10:16:132-135.
doi: 10.1016/j.jcot.2020.12.010. eCollection 2021 May.

Changes in femoral offset is not associated with increased incidence of lateral hip pain following total hip arthroplasty

Michael Foy  1 , Daniel Kielminski  1 , Daniel Cavazos  1 , Awais Hussain  2 , Anshum Sood  2 , Mark Gonzalez  2
Affiliations

Changes in femoral offset is not associated with increased incidence of lateral hip pain following total hip arthroplasty

Michael Foy et al. J Clin Orthop Trauma. .

Erratum in

  • Erratum regarding previously published articles.
    [No authors listed] [No authors listed] J Clin Orthop Trauma. 2021 Aug 5;21:101560. doi: 10.1016/j.jcot.2021.101560. eCollection 2021 Oct. J Clin Orthop Trauma. 2021. PMID: 34414073 Free PMC article.

Abstract

Purpose: Increased femoral offset following total hip arthroplasty allows for greater stability of the hip joint. However, the increase in femoral offset can cause an impingement of local structures resulting in persistent lateral hip pain. There is conflicting evidence whether changes in femoral offset increases the rates of lateral hip pain following total hip arthroplasty.

Methods: This was a retrospective case control study that grouped patients based on the presence of persistent lateral hip pain following total hip arthroplasty. Patients were then stratified according to their change in femoral offset (<-5 mm, -5 mm < x < 5 mm, and 5 mm<). A chi squared analysis was then performed to see if there was a statistical difference in the rates of lateral hip pain amongst these groups.

Results: A change in femoral offset of the implanted hip relative to the native hip was not associated with increased rates of lateral hip pain following total hip arthroplasty (p = 0.35). A change in femoral offset of the implanted hip relative to the contralateral hip was not associated with increased rates of lateral hip pain following total hip arthroplasty (p = 0.40).

Conclusion: This study found that there was no association between increased femoral offset and rates of postoperative lateral hip pain following total hip arthroplasty. Future investigations should look at a larger sample size with multiple institutions to further assess the impact on femoral offset changes on rates of persistent lateral hip pain.

Keywords: Arthroplasty; Complications; Femoral offset; Hip; Pain.

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Figures

Fig. 1
Fig. 1
An example preoperative x-ray (left) and postoperative x-ray (right) are shown. In the left x-ray the femoral offset of the hip before the THA (a) and in the right x-ray the femoral offset of the hip after the THA (b).
Fig. 2
Fig. 2
An example postoperative x-ray with the femoral offset of the postoperative hip (b) and the femoral offset of the contralateral hip (c).
See this image and copyright information in PMC

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