Trinity - design rationale
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Advanced Bearing Acetabular System Design rationale Corin Responsible Innovation

Performance | Versatility | Technology Patient demographics have changed over time1 and today’s patients have both an increased expectation of post-operative functional outcome and the need for a more durable, long lasting implant solution. All patients expect optimised function of their joints to suit their lifestyles and true intra-operative versatility is an essential requirement of any modern day acetabular cup system. In addition to durability and a low wear solution, both stability and a high range of motion are essential in optimising function and quality of life for today’s more...

The advanced solution for acetabular hip replacement |3

The Trinity™ advanced bearing acetabular system consists of a universal acetabular shell designed for use with a seamless range of high performance bearings. ■ BIOLOX® delta ceramic-on-ceramic ■ HXLPE highly cross-linked polyethylene ■ ECiMa™ (vitamin E) highly cross-linked polyethylene The Trinity™ two-in-one shell allows all three bearings used in one design that seamlessly integrates the maximum articulation size. The ceramic and metal inserts lock securely onto the taper providing high axial resistance. The 18o taper is designed for optimal security and ease of insertion without...

Trinity™ hemispherical titanium shell is designed for excellent initial press-fit and long-term stability Vacuum plasma pure titanium and Biomimetic Cementless Technology for clinically proven longterm fixation2,3 Highly polished Prime™ rim to prevent irritation and impingement of the psoas Biomimetic Cementless Technology -coated Hydrolok occluders fill the screw holes minimising fluid pathways Screws can be used by removing Hydrolok occluders for versatile fixation Thirteen shell sizes for pati

The Trinity™ advanced bearing system is designed to allow maximum bone preservation without compromising range of motion or stability. The system includes shell sizes from 44mm to 68mm and provides a full range of bearing sizes from 28mm through to 40mm in all high performance bearing options. ■ 28mm bearing in a 44mm and 46mm shell The BIOLOX® delta ceramic-on-ceramic, HXLPE and ECiMa™ (vitamin E) highly cross-linked polyethylene bearings all follow this size range philosophy, allowing the surgeon to deliver a patient matched solution.

compatible with BIOLOX® delta and ECiMa only Taper size Trinity™ shell outer diameter Polyethylene liner (UHMWPE, HXLPE and ECiMa™) Polyethylene liner (HXLPE and ECiMa™ only) Ceramic liner

BIOLOX® delta ceramic BIOLOX® delta ceramic is an alumina composite which is a low wear ceramic high performance bearing and to date there have been over half a million implanted worldwide4. This fourth generation composite contains 82% alumina, 17% zirconia and other trace elements such as strontium oxide. The zirconia and strontium oxide reduce the incidence of micro-crack propagation within the matrix. In addition the oxide mixture forms platelet shaped crystals which prevent crack propagation by deflecting the crack pathway and neutralising crack energy. The high density and small grain...

ECiMa™ ECiMa™ material is a highly cross-linked polyethylene containing vitamin E which has been designed for high performance and long-term durability. E vitamin E enhanced polyethylene C cold i irradiated ECiMa™ material contains vitamin E which provides a protective barrier that prevents both on shelf and in vivo oxidative degradation. Vitamin E is a naturally occurring anti-oxidant and is therefore fully biocompatible. The technology was developed to solve the issue of in vivo oxidation of conventional highly cross-linked polyethylene that has recently been highlighted5. The oxidation...

Versatility The Biomimetic Cementless Technology-coated Hydrolok occluders are pre-assembled within the shell which gives the surgeon two options within one design. The Trinity™ shell gives the option for three screws to be used for additional fixation. If only one or two screws are utilised the other screw holes remain occluded, preventing a pathway for fluid between the insert and the acetabular bone. The Hydrolok occluders are Biomimetic Cementless Technology-coated to increase the surface area for bone on-growth. The apical occluder is also delivered within the shell packaging so the...

ementiess ecnnooq Biomimetic Cementless Technology is a bioactive calcium phosphate (CaP) coating with a microcrystalline structure which maintains substrate surface roughness, providing a large area for bone integration. The biphasic composition of this coating (>70% brushite) has been shown to promote short and long term osseointegration while the bone like (biomimetic) coating morphology can provide a potent capillary effect which may help to accelerate the implant healing process2’3’12’13’14’15’16’17’18. The room temperature electrolytic deposition process results in the formation of a...

12. Schwarz ML, Kowarsch M, Rose SB, Jani L. Histomorphometrical and mechanical evaluation of various surfaces on titanium test bodies placed into femora of the Göttinger minipig. Can a resorbable CaP coating increase osteointegration? 49th Annual Meeting of the Orthopaedic Research Society 2003; Poster. Health profile of England 2008, Department of Health. Wood PLR, Deakin S. Total ankle replacement. The results in 200 ankles. J Bone Joint Surg (Br) 2003; 85-B:3:334. Saxler G, Temmen D, Bontemps G. Medium-term results of AMC-unicompartmental knee arthroplasty. The Knee 2004; 11:39-355....