Anatomically Contoured Head for THA

The use of ceramic bearings in hip arthroplasty has been rising steadily over the last years. Ceramic is meanwhile the preferred femoral head material in hip replacement. There is a consensus that the biological advantages of ceramics contribute to improve the clinical outcomes. 

BIOLOX CONTOURA® is a contoured ceramic femoral head mimicking the anatomical shape of the proximal femur. 

Designed with the goal of:​

  • Reducing the volume of material exposed to the soft tissue​

  • Reducing the potential for interaction with the surrounding tissues​

Development

The BIOLOX CONTOURA® head was conceived and developed at the Harris Orthopaedics Laboratory at Massachusetts Hospital in Boston, MA, USA. 

Research on the implant began in 2012, led by Drs. Ohrun Muratoglu and Kartik Mangudi Varadarajan, PhD, Associate Director for the TIRC at MGH, and Assistant Professor of Orthopedic Surgery at Harvard, together with Drs. Harry Rubash, Henrik Malchau, and Andrew Freiberg. The research team worked with Partners HealthCare Innovation, the business development unit of Partners, and partnered with CeramTec to design and test the anatomically contoured ceramic head. 
 

The biocompatibility of alumina matrix composites like BIOLOX®delta has been proven, clinically, in in-vitro studies and in in-vivo animal studies. The BIOLOX®delta particles fail to stimulate an inflammatory response and do not cause any DNA damage or oxidative stress in human cells in clinically-relevant doses. In other words, the material and its debris are not cytotoxic and/or genotoxic.​

  • Excellent biocompatibility​

  • Low immunological response

  • High wear resistance

  • Reduced bacterial adhesion

  • Safe in terms of metal ion release

  • Best clinical outcomes

  • High potential for cost-effectiveness in THA

Recent in-vitro studies and analyses of explants have demonstrated that the bacterial adhesion is reduced on BIOLOX® ceramic surfaces. Additionally, studies showed a reduced biofilm formation on BIOLOX® surfaces compared to metal and polymer surfaces.

Low Immunological Response​

The biocompatibility of alumina matrix composites like BIOLOX®delta has been proven, clinically, in in-vitro studies and in in-vivo animal studies. The BIOLOX®delta particles fail to stimulate an inflammatory response and do not cause any DNA damage or oxidative stress in human cells in clinically-relevant doses. In other words, the material and its debris are not cytotoxic and/or genotoxic.​

Using BIOLOX®delta Ceramics
  • Excellent biocompatibility​

  • Low immunological response

  • High wear resistance

  • Reduced bacterial adhesion

  • Safe in terms of metal ion release

  • Best clinical outcomes

  • High potential for cost-effectiveness in THA

Reduced Bacterial Adhesion​

Recent in-vitro studies and analyses of explants have demonstrated that the bacterial adhesion is reduced on BIOLOX® ceramic surfaces. Additionally, studies showed a reduced biofilm formation on BIOLOX® surfaces compared to metal and polymer surfaces.

Contoured Head

Smooth Transition

The contoured femoral head provides a smooth transition throughout ​the articular surface to the head-neck junction​. 

Contoured Head

Large-diameter

With the BIOLOX CONTOURA®, the large-diameter profile of a conventional implant is retained in the hemispherical portion above the equator. However, the distal portion of the femoral head below the equator is contoured using a smaller radius to reduce the volume of material exposed to the soft tissue.​

Available Sizes

BIOLOX CONTOURA® heads are available in the diamters 28, 32, 36, 40 and 44mm for the neck lengths S, M, L, XL.

An overlay of a 36mm BIOLOX CONTOURA® head and a 32mm conventional ceramic femoral head shows the volume reduction of BIOLOX CONTOURA®. See volume reduction here. 

 

Features & Benefits

  • Reduced volume and radius underneath equator
  • Available in different diameters and multiple neck lengths
  • Mimicks the anatomical shape of the femoral head
  • Made of proven BIOLOX®delta ceramics
  • Aims to reduce potential for interaction with surrounding tissues
Supporting Documents
Product Information
BIOLOX®delta Quick Reference Guide
6 MB, pdf
Product Information
BIOLOX® CONTOURA
3 MB, pdf

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References