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Published in: European Journal of Orthopaedic Surgery & Traumatology 3/2018

01-04-2018 | Original Article • HIP - ARTHROPLASTY

Cementless modular neck stems: are they a safe option in primary total hip arthroplasty?

Authors: José M. Pelayo-de-Tomás, José L. Rodrigo-Pérez, Carlos D. Novoa-Parra, Alejandro Lizaur-Utrilla, María Morales-Suárez-Varela, José Antonio Blas-Dobón

Published in: European Journal of Orthopaedic Surgery & Traumatology | Issue 3/2018

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Abstract

Purpose

The objective was to assess aseptic complications and functional outcome using a primary total hip arthroplasty with modular neck.

Methods

Prospective cohort of 317 consecutive patients. The mean age was 61.1 (range, 41–84) years. The H-Max-M model (Lima, Italy) system was used in all patients. The functional assessment was made by the Harris Hip Score, Short Form-36 (SF-36), Western Ontario and McMaster Universities Osteoarthritis Index and visual analogue scale for pain. Radiological outcomes were also assessed, and adverse events and complications were noted.

Results

The mean follow-up was 6.1 (range, 2–8) years. Functional outcome significantly improved in most patients. There were 3 deep infections (0.9%) and 17 aseptic complications (5.3%) including 1 intraoperative acetabular fracture, 3 later periprosthetic femoral fractures, 1 broken ceramic insert, 1 acetabular loosening, 3 femoral loosening and 1 broken titanium modular neck in a obese patient. No pseudotumors or elevated serum levels of metal ions were found among the patients with radiolucent lines or aseptic loosening.

Conclusions

The findings in the present study showed that the H-MAX-M stem provided satisfactory functional outcome in most patients with a low rate of complications attributable to the modular neck design. We consider that using this novel modular neck-stem coupling design can be an alternative to the conventional monoblock stems in patients without overweight.
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Metadata
Title
Cementless modular neck stems: are they a safe option in primary total hip arthroplasty?
Authors
José M. Pelayo-de-Tomás
José L. Rodrigo-Pérez
Carlos D. Novoa-Parra
Alejandro Lizaur-Utrilla
María Morales-Suárez-Varela
José Antonio Blas-Dobón
Publication date
01-04-2018
Publisher
Springer Paris
Published in
European Journal of Orthopaedic Surgery & Traumatology / Issue 3/2018
Print ISSN: 1633-8065
Electronic ISSN: 1432-1068
DOI
https://doi.org/10.1007/s00590-017-2071-0

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