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News, Trends, and Insights from the World of Hip and Knee Replacement and Beyond

Read up on the research transforming total joint arthroplasty – and the BIOLOX® ceramic components shaping the future of patient care. 

3D render of the H1® ceramic-on-ceramic hip resurfacing implant (BIOLOX®delta, Zimmer Biomet) – Clinical Results.

Can ceramic hip resurfacing match the functional outcomes of healthy joints? New peer-reviewed evidence suggests it can.

Prof. Justin Cobb and researchers at Imperial College London aim to close the gap between functional promise and assessed outcomes for ceramic-on-ceramic hip resurfacing arthroplasty at 12 months.

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3D render of a BIOLOX®delta ceramic-on-ceramic hip resurfacing implant (ReCerf®) on a dark background, labeled Clinical Results.

Ceramic-on-ceramic hip resurfacing: first MRI data analysis

Metal-on-metal hip resurfacing has a well-documented imaging problem. MRI scans are routinely degraded by metal artifact, making it harder to assess bone vascularity, cement interfaces, and early signs of avascular necrosis (AVN).

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3D render of a ceramic femoral head and acetabular liner bearing couple, illustrating the clinical context of the Sweeney & Broderick (J Orthop 2025) systematic review on cobalt toxicity following metal-on-polyethylene revision after ceramic hip bearing fracture

Bearing choice matters: the case against metal revision

When a ceramic hip bearing fractures, revising to metal-on-polyethylene (MoP) is contraindicated. A 2025 systematic review & meta-analysis published in the Journal of Orthopaedics analyzed 30 peer-reviewed case reports describing the consequences of using metal bearings in revising a ceramic failure.

Explore the Clinical Findings
Icons of a ceramic-on-ceramic bearing couple featuring BIOLOX®delta and BIOLOX®forte, illustrating clinical survivorship data from the Pentland et al. (Lancet 2026) systematic review and meta-analysis of 30-year total hip replacement outcomes

Pentland et al. (2026) review 30-year survivorship of modern total hip replacement

The Lancet has published the largest survivorship analysis of contemporary THR to date, pooling data from 29 clinical studies and 8 national joint registries – Australia, Canada, Denmark, Finland, the US, the UK, Norway, and Sweden – to cover 1,904,237 primary THRs.

Explore the Evidence
Illustration of a hip implant in situ with dispersed metal particles shown migrating from the implant surface. Circular insets display microscopic metal ions labeled Co and Ti, and a second inset shows clinical imaging scans. A purple banner at the bottom reads “Clinical Results.”

Total joint arthroplasty + brain metal concentrations: findings from the Mayo Clinic

A peer‑reviewed study (2025) by investigators at the Mayo Clinic examined to what extent total joint arthroplasty (TJA) is associated with metal accumulation in brain tissue and Alzheimer’s disease (AD) neuropathology.

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Title graphic showing two ceramic-on ceramic bearing components -BIOLOX®delta and BIOLOX®forte -positioned on a dark background with curved line elements. A purple banner at the bottom reads “AAOS 2026 Recap,” representing a summary of long‑term performance data for BIOLOX®delta and BIOLOX®forte ceramic bearings in total hip arthroplasty.

AAOS 2026: long-term performance of BIOLOX®delta & BIOLOX®forte ceramic bearings in THA

The AAOS2026 congress was a welcome chance to reconnect with colleagues and to hear how surgeons think about bearing choices. As a ceramic manufacturer with a long clinical history in this field, we focused on the long-term data for ceramic-on-ceramic (CoC) and ceramic-on-HXLPE (CoHXLPE) bearings presented this year.

Three studies in particular – from Kim et al., Park et al., and Seddigh et al. – offered clinically relevant big-picture insights…

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Graphic showing three hip implant concepts: a ceramic‑on‑ceramic hip resurfacing design, a metal‑on‑metal hip resurfacing design, and a conventional total hip replacement with a femoral stem. The lower banner reads “Clinical Results,” indicating a comparison of clinical performance outcomes.

Gait analysis at higher walking speeds following ceramic resurfacing, metal resurfacing, and total hip arthroplasty: a comparison

Prof. Justin Cobb of Imperial College London, inventor of Embody Orthopaedic’s H1® hip resurfacing (made with BIOLOX®delta technology), has co-authored a first peer-reviewed study showing a head-to-head comparison of BIOLOX®delta ceramic-on-ceramic hip resurfacing (CoC-HRA), metal-on-metal resurfacing (MoM-HRA), and total hip replacement (THR).

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New Zealand national flag used as a visual backdrop for content summarizing key messages from the New Zealand Joint Replacement Registry Report 2025

Key insights from the New Zealand Joint Replacement Registry Report 2025

The NZJR’s latest Annual Report portrays several important trends and outcomes in hip arthroplasty in New Zealand over 26 years (1999-2024).

Here are the takeaways to know.

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Australien national flag used as a visual backdrop for content summarizing key messages from the 2025 AOA NJRR Annual Report

AOA NJRR 2025: Ceramic Bearings in the Modern THA Era

The 2025 Australian Registry reflects some consistent realities in primary total hip arthroplasty for osteoarthritis (OA) in Australia: cross-linked polyethylene (XLPE) is widely used (97.2%), cementless fixation dominates, and heads larger than 32mm are the norm.

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