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Orthopaedic implants and arthroplasty
Research Guide
What is Orthopaedic implants and arthroplasty?
Orthopaedic implants and arthroplasty refers to the surgical replacement of damaged joints with artificial implants, such as hip and knee prostheses, and the development of biocompatible materials for bone repair and reconstruction.
The field encompasses over 123,219 published works on orthopaedic implants and arthroplasty. Key materials include titanium-based alloys, bioceramics, and magnesium alloys evaluated for implant applications. Projections indicate substantial increases in primary and revision hip and knee arthroplasties in the United States from 2005 to 2030.
Research Sub-Topics
Titanium Alloys for Orthopedic Implants
This sub-topic investigates Ti-6Al-4V and beta-titanium alloys for hip and knee implants, emphasizing biocompatibility, corrosion resistance, and fatigue performance. Researchers study surface modifications to enhance osseointegration.
Bioceramics in Arthroplasty
This sub-topic covers alumina, zirconia, and zirconia-toughened alumina ceramics for bearing surfaces in total joint replacements. Researchers examine wear debris, fracture toughness, and third-body damage.
Biodegradable Magnesium Alloys
This sub-topic focuses on Mg-based implants that degrade over time, studying corrosion rates, hydrogen evolution, and coating strategies for controlled resorption. Researchers evaluate mechanical integrity during bone healing.
Porous Scaffolds for Bone Tissue Engineering
This sub-topic explores 3D-printed and foam-based scaffolds with controlled porosity for osteogenesis in implant coatings and grafts. Researchers optimize pore architecture for cell infiltration and vascularization.
Hip and Knee Arthroplasty Epidemiology
This sub-topic analyzes projections, revision rates, and risk factors for primary and revision total joint arthroplasties. Researchers use registries to study demographics, outcomes, and healthcare burden.
Why It Matters
Orthopaedic implants and arthroplasty address the rising demand for joint replacements, with Kurtz et al. (2007) in "Projections of Primary and Revision Hip and Knee Arthroplasty in the United States from 2005 to 2030" projecting large increases in procedures that inform policy on surgeon numbers and resources. Titanium biomaterials, reviewed by Geetha et al. (2008) in "Ti based biomaterials, the ultimate choice for orthopaedic implants – A review", provide strength and biocompatibility for long-term implants. Recent developments include Zimmer Biomet's FDA Breakthrough Designation for an iodine-treated total hip replacement system to prevent infections and CustoMED's $6M funding for AI-powered 3D printed orthopedic solutions, enhancing surgical precision and patient outcomes.
Reading Guide
Where to Start
"Projections of Primary and Revision Hip and Knee Arthroplasty in the United States from 2005 to 2030" by Kurtz et al. (2007), as it provides essential quantitative projections on procedure volumes, foundational for understanding clinical demand and resource planning.
Key Papers Explained
Kurtz et al. (2007) in "Projections of Primary and Revision Hip and Knee Arthroplasty in the United States from 2005 to 2030" establish demand forecasts that contextualize material needs addressed by Geetha et al. (2008) in "Ti based biomaterials, the ultimate choice for orthopaedic implants – A review". Kokubo and Takadama (2006) in "How useful is SBF in predicting in vivo bone bioactivity?" build testing standards for bioactivity relevant to Hench (1991) "Bioceramics: From Concept to Clinic", which classifies ceramics foundational to scaffolds in Karageorgiou and Kaplan (2005) "Porosity of 3D biomaterial scaffolds and osteogenesis".
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Recent news highlights Zimmer Biomet's FDA Breakthrough Designation for an iodine-treated hip implant system and CustoMED's $6M funding for AI-powered 3D printed solutions. AI applications show 99% accuracy in classifying knee and hip implants per Dr. Ramkumar's studies in The Journal of Arthroplasty.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | How useful is SBF in predicting in vivo bone bioactivity? | 2006 | Biomaterials | 9.2K | ✕ |
| 2 | Projections of Primary and Revision Hip and Knee Arthroplasty ... | 2007 | Journal of Bone and Jo... | 6.8K | ✕ |
| 3 | Porosity of 3D biomaterial scaffolds and osteogenesis | 2005 | Biomaterials | 6.3K | ✕ |
| 4 | Traumatic Arthritis of the Hip after Dislocation and Acetabula... | 1969 | Journal of Bone and Jo... | 5.6K | ✕ |
| 5 | Projections of Primary and Revision Hip and Knee Arthroplasty ... | 2007 | Journal of Bone and Jo... | 5.4K | ✕ |
| 6 | Ti based biomaterials, the ultimate choice for orthopaedic imp... | 2008 | Progress in Materials ... | 5.1K | ✕ |
| 7 | Traumatic Arthritis of the Hip After Dislocation and Acetabula... | 2013 | — | 5.1K | ✕ |
| 8 | Bioceramics: From Concept to Clinic | 1991 | Journal of the America... | 4.9K | ✕ |
| 9 | Magnesium and its alloys as orthopedic biomaterials: A review | 2005 | Biomaterials | 4.3K | ✕ |
| 10 | Biodegradable and bioactive porous polymer/inorganic composite... | 2006 | Biomaterials | 3.7K | ✕ |
In the News
Zimmer Biomet Announces FDA Breakthrough Designation ...
This system recently received approval from the Japan Pharmaceutical and Medical Devices Agency (PMDA) in September , becoming the world's first approved orthopedic implant with Iodine Technology. ...
Zimmer wins FDA's breakthrough status for tech to prevent ...
* Zimmer Biomet has received breakthrough device status for an iodine-treated total hip replacement system, the company said Tuesday.
CustoMED announces $6M funding to scale 3D printed ...
** CustoMED ** has announced the successful completion of its seed round, bringing total funding to 6 million USD. The company will use the funding to scale its cloud-based platform, which combines...
Durham-based restor3d secures $104M investment
Restore3d, a Durham maker of three-dimensional printed orthopedic implants, has secured a new investment round valued at $104 million, including $65 million from a global private equity firm and $3...
CustoMED Announces $6M Funding to Scale AI-Powered ...
- Financial - Recon # CustoMED Announces $6M Funding to Scale AI-Powered 3D Printed Solutions for Orthopedic Surgery by Tim Allen October 29, 2025
Code & Tools
Accurate identification of orthopedic implant design is essential to pre-operative planning of revision arthroplasty. Current systems are inadequat...
To assist in this complex decision making the goal of this project is to develop a framework that will advance existing geometrical pre-operative p...
This package uses a collection of machine learning models to detect anatomic landmarks on 3d models of shoulder bones and also generates patient sp...
Total knee arthroplasty (TKA) is a common orthopaedic surgery to replace a damaged knee joint with artificial implants. The inaccuracy of achieving...
## Repository files navigation # 3D-Modeling-mimics-3matic Using Python scripts for creating volume mesh of implanted cemented human femoral bone...
Recent Preprints
The Journal of Arthroplasty: Home Page
The Journal of Arthroplasty brings together the clinical and scientific foundations for joint replacement. This peer-reviewed journal publishes original research and manuscripts of the highest qual...
Reporting Guidelines for Artificial Intelligence Use in ...
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Latest Articles : Clinical Orthopaedics and Related ...
Latest Articles
Evolutionary patterns and future perspectives of joint ...
- This study aimed to comprehensively review the current research status and trends of joint replacement for arthritis patients worldwide. ### Methods
AI and Arthroplasty: New Study Shows 99% Accuracy of ...
Dr. Ramkumar and members of the Department of Orthopaedic Surgery designed two separate studies to classify knee and hip arthroplasty implants using a deep learning algorithm. Both studies were pub...
Latest Developments
Recent developments in orthopaedic implants and arthroplasty research include the successful clinical use of the FDA-approved Freedom Total Knee implant with robotic assistance in April 2026 (Bonezone), advancements in materials science and digital technologies enhancing implant performance (Springer Nature, BMC), and promising long-term results of cementless total knee arthroplasty with 10-year survivorship rates exceeding 96% (Arthroplasty Journal00171-8/abstract)).
Sources
Frequently Asked Questions
What are the projected increases in hip and knee arthroplasties in the US?
Kurtz et al. (2007) in "Projections of Primary and Revision Hip and Knee Arthroplasty in the United States from 2005 to 2030" project large increases in primary and revision total hip and knee arthroplasties from 2005 to 2030. These projections provide a basis for policy decisions on orthopaedic surgeons and resources.
Why are Ti-based materials used for orthopaedic implants?
Geetha et al. (2008) in "Ti based biomaterials, the ultimate choice for orthopaedic implants – A review" highlight titanium alloys for their mechanical properties and biocompatibility in orthopaedic applications. They offer the ultimate choice due to strength, corrosion resistance, and integration with bone.
What types of bioceramics are used in musculoskeletal repair?
Hench (1991) in "Bioceramics: From Concept to Clinic" describes bioceramics as bioinert (alumina, zirconia), resorbable (tricalcium phosphate), bioactive (hydroxyapatite, bioactive glasses), or porous for tissue ingrowth. These ceramics repair and reconstruct diseased or damaged musculoskeletal parts.
How does porosity affect osteogenesis in biomaterial scaffolds?
Karageorgiou and Kaplan (2005) in "Porosity of 3D biomaterial scaffolds and osteogenesis" examine how scaffold porosity influences bone formation. Optimal porosity levels enhance cell migration, vascularization, and new bone growth in tissue engineering.
What role does SBF play in assessing bone bioactivity?
Kokubo and Takadama (2006) in "How useful is SBF in predicting in vivo bone bioactivity?" evaluate simulated body fluid (SBF) for predicting implant bioactivity. SBF testing simulates in vivo conditions to assess apatite formation on biomaterials.
What are the applications of magnesium alloys in orthopaedics?
Staiger et al. (2005) in "Magnesium and its alloys as orthopedic biomaterials: A review" review magnesium alloys for their biodegradability and mechanical properties matching bone. They degrade over time, reducing long-term implant removal needs.
Open Research Questions
- ? How can porosity in 3D scaffolds be optimized for maximal osteogenesis in load-bearing implants?
- ? What improvements in SBF testing are needed for more accurate prediction of in vivo bone bioactivity?
- ? Which titanium alloy modifications best balance strength, biocompatibility, and osseointegration for long-term implants?
- ? How do biodegradable magnesium alloys perform under physiological loads without premature degradation?
- ? What design parameters in porous polymer/inorganic composites maximize bone tissue engineering outcomes?
Recent Trends
Demand for hip and knee arthroplasties continues to rise per Kurtz et al. projections.
2007Investments include restor3d's $104M for 3D printed implants and CustoMED's $6M for AI-3D platforms.
Zimmer Biomet gained FDA Breakthrough status for an iodine-treated hip system approved in Japan.
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