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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. 

Infographic: headline "Unraveling Wear – What Really Drives THA Longevity?" with hip joint schematic and clinical results label

Which factors really drive long-term performance in total hip arthroplasty?

A new systematic review from Nikam et al. (Manipal Academy of Higher Education, India, & Izmir Institute of Technology, Turkey) synthesizes the results of 109 studies conducted between 2010-2025 to revisit a recurrent question in orthopedics: implant longevity.

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BIOLOX® ceramic femoral head and acetabular insert with clinical results banner and ceramic fracture graphic

Outcomes of revision for ceramic fracture in Dual Mobility implants with a metallic inner head

Ceramic component fracture is rare in total hip arthroplasty (THA), but when it occurs, the choice of revision bearing can significantly influence long-term patient outcomes.

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Skeleton with joint implant icons; metal particles dispersing toward a brain — illustrating systemic metal migration in total joint arthroplasty.

What implications does implant material choice carry beyond the joint itself?

We know from recent evidence that metal implant debris and metal ions don’t stay only at the joint. They travel to the heart, liver, spleen, kidneys, and bone marrow. But do they reach the brain? And if they do, what happens there?

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Ceramic femoral head in a white acetabular cup, labeled Clinical Results — illustrating Prozyr® zirconia-on-polyethylene bearing in THA.

A 25-year lesson from ceramic hip bearings

A new study by Ishida, Takahashi, Tateiwa, et al. followed 62 hips for over 20 years, comparing 31 monolithic zirconia ceramic-on-polyethylene (Prozyr®, Saint Gobain Desmarquest) with 31 cobalt-chromium metal-on-polyethylene bearings.

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H1® ceramic hip resurfacing implant — BIOLOX®delta acetabular cup and femoral head, Zimmer Biomet

New study: Ceramic hip resurfacing and implant stability

Hip resurfacing is known for preserving femoral bone stock. But the acetabular side has received less attention – and implant geometry matters there too.

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3D medical illustration of a human knee joint with highlighted inflammation, labeled "Clinical Results"

New systematic review in The Knee: What does the clinical evidence say about metal-free ceramic knee arthroplasty?

The biological response to implant materials remains a central question in knee arthroplasty. Metal wear debris can trigger adverse local tissue reactions, and an estimated 10-15% of the general population shows some degree of metal hypersensitivity (Desai et al., 2019, Akil et al., 2018). These factors drive growing interest in bearing materials with a fundamentally different immunological profile.

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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.

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