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Correlation between the presence of herniation pit and femoroacetabular impingement: a systematic review and meta-analysis

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Abstract

Purpose

The purpose of this systematic review and meta-analysis was to evaluate the correlation between the incidence of herniation pits (HPs) and femoroacetabular impingement (FAI)-related morphologies.

Methods

A systematic search of the MEDLINE, EMBASE, and Cochrane Library databases was performed for studies evaluating the relationship between the incidence of HPs and FAI-related morphologies published up to August 16, 2019. Subgroup analyses were also performed to determine the differences in the relationship between the presence/absence of hip symptoms and cam-/pincer-type FAI.

Results

Seven studies involving 7950 hips were included. The pooled odds ratio (OR) for the incidence of HPs in the presence of an FAI-related morphology was 1.64 (95% confidence interval [CI] = 1.09–2.46; P = 0.02). In the subgroup analyses, the ORs for the incidence of HPs in the symptomatic and asymptomatic hips were 1.00 (95% CI 0.40–2.51; P = 1.00) and 1.59 (95% CI 1.42–1.77; P < 0.0001), respectively; the ORs for the incidence of HPs in the cam- and pincer-type FAI were 1.61 (95% CI 1.43–1.81; P < 0.0001) and 1.42 (95% CI 0.77–2.61; P = n.s.), respectively.

Conclusions

The incidence of HPs has a significant relationship with FAI-related morphology, especially in asymptomatic patients and those with cam-type FAI morphology.

Level of evidence

III.

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Correspondence to Jun Ho Kim.

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Kim, C., Han, S., Yang, C. et al. Correlation between the presence of herniation pit and femoroacetabular impingement: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc (2020). https://doi.org/10.1007/s00167-020-05888-8

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Keywords

  • Herniation pit
  • Femoroacetabular impingement
  • Correlation