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Acetabuloplasty with bone grafting in uncemented hip replacement for protrusion

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Abstract

Purpose

This retrospective study investigated midterm outcomes of uncemented total hip replacement with acetabuloplasty using impacted bone grafts in acetabular protrusion or primary hip arthritis with an inadequate thickness of the medial acetabular wall.

Methods

The medial acetabular wall was augmented by impaction bone grafting, and an uncemented cup was implanted in all cases. Hip centre of rotation, medial acetabular wall thickness and cup positioning were evaluated radiologically, with the Harris Hip Score determined at each follow-up.

Results

A total of 32 patients (39 hips) were followed for a mean of 4.5 years, with significant improvement of the Harris Hip Score at the last follow-up. Hip centre of rotation was restored close to the optimal position. Medial acetabular wall thickness and cup position obtained immediately postoperatively were maintained up to the last follow-up, without statistically significant differences. Bone graft integration was observed in all cases by one or two years postoperatively, with no signs of loosening or cup migration at the last follow-up. Heterotopic ossification was identified in 15.4 % of cases, without clinical evidence of hip mobility impairment or pain.

Conclusions

Impaction bone grafting for acetabuloplasty, associated with the implantation of an uncemented cup, yields good midterm results in patients with acetabular protrusion and with primary hip arthrosis with a thinned medial acetabular wall. The restored bone stock and medial acetabular wall thickness enable the placement of the hip centre of rotation close to the optimal location, which could offer further long-term benefits.

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Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethics approval

All procedures performed involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. For this type of study formal consent is not required.

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Authors and Affiliations

  1. Department of Orthopaedics and Traumatology I, University of Medicine and Pharmacy Tîrgu Mureş, Mihai Viteazul Street no. 31, Tîrgu Mureş, 540096, Romania

    Sándor-György Zuh, István Gergely & Tudor Sorin Pop

  2. Clinic of Orthopaedics and Traumatology, Mureş County Hospital, Mihai Viteazul Street no. 31, Tîrgu Mureş, 540096, Romania

    Ancuţa Zazgyva

Authors
  1. Sándor-György Zuh
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  2. Ancuţa Zazgyva
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  3. István Gergely
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  4. Tudor Sorin Pop
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Correspondence to Ancuţa Zazgyva.

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Zuh, SG., Zazgyva, A., Gergely, I. et al. Acetabuloplasty with bone grafting in uncemented hip replacement for protrusion. International Orthopaedics (SICOT) 39, 1757–1763 (2015). https://doi.org/10.1007/s00264-015-2804-9

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  • DOI: https://doi.org/10.1007/s00264-015-2804-9

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