Arthroplasty News and Research

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Arthroplasty is a orthopaedic surgery procedure, in which the arthritic or dysfunctional joint surface is replaced with something better or by remodeling or realigning the joint by osteotomy or some other procedure. Previously, a popular form of arthroplasty was interpositional arthroplasty with interposition of some other tissue like skin, muscle or tendon to keep inflammatory surfaces apart or excisional arthroplasty in which the joint surface and bone was removed leaving scar tissue to fill in the gap. Other forms of arthroplasty include resection(al) arthroplasty, resurfacing arthroplasty, mold arthroplasty, cup arthroplasty, silicone replacement arthroplasty, etc. Osteotomy to restore or modify joint congruity is also an arthroplasty.

Bone density after reverse shoulder arthroplasty declines over time

Driven by the potential advantages in bone stock preservation and easier implant removal during revision surgery, the use of cementless short-stem implants in shoulder arthroplasty has increased in recent years.

24 Aug 2026

Coral-inspired scaffold enhances bone repair by reprogramming immune cells

SONFH is one of the leading causes of non-traumatic osteonecrosis. Reported in up to 9%–40% of patients receiving prolonged or high-dose glucocorticoid therapy, the condition progressively weakens the femoral head and can eventually lead to joint collapse, making effective bone repair a major clinical challenge.

13 Aug 2026

GLP-1 treatments may reduce knee replacement surgery rates

GLP-1 receptor agonist drugs, used for the treatment of diabetes, and more recently, weight loss, are associated with a significantly lower long term risk of knee replacement surgery as a result of osteoarthritis, finds an analysis of medical records data, published in the open access journal Regional Anesthesia & Pain Medicine.

2 Jun 2026

Randomized controlled trial validates total hip arthroplasty for improving functional capacity

Total hip arthroplasty leads to the best outcomes in the treatment of moderate-to-severe hip osteoarthritis, according to a new study by the University of Eastern Finland and Kuopio University Hospital. During a one-year follow-up, surgery combined with conservative treatment was found to relieve pain and improve functional capacity and quality of life more effectively than conservative treatment alone, which was based on an exercise program.

4 May 2026

Dropped surgical implants are contaminated instantly and alcohol does not fix it

A study evaluates disinfectants for decontaminating dropped implants in surgery, highlighting risks and the efficacy of CHG and PI in reducing bacterial load.

31 Mar 2026

Study identifies risk factors for readmissions after shoulder replacement surgeries

Shoulder replacement is the third most common joint-replacement surgery in the U.S. and is likely to become more common as the population ages, according to Penn State researchers.

17 Mar 2026

Walking speed before surgery predicts who thrives after hip replacement

This study shows that preoperative gait speed is a strong predictor of patient-reported pain relief, function, and joint awareness after total hip arthroplasty for osteoarthritis. A walking speed of at least 1.0 m/s before surgery independently predicts excellent postoperative outcomes.

7 Dec 2025

Walking speed before hip replacement predicts long-term recovery success

Total hip arthroplasty (hip replacement) is a common treatment for hip osteoarthritis, a degenerative joint disease caused by cartilage in the hip joint wearing down.

1 Dec 2025

$Reducing femoral fractures in total hip replacement with safer implant designs$

Reducing femoral fractures in total hip replacement with safer implant designs

As populations continue to age, total hip replacement (THR) is becoming an increasingly common surgical procedure.

28 Oct 2025

Study highlights need to establish clinical practice guidelines for surgical patients receiving MOUDs

In an effort to stem the death toll from opioid overdose, United States public health officials have promoted the prescription and use of medications like buprenorphine that blunt the effects of illicit opioids such as fentanyl.

27 Oct 2025

Study uses artificial intelligence to classify patient pain archetypes after knee replacement

A study using artificial intelligence to classify patient pain archetypes and identify risk for severe pain after knee replacement has earned a Best of Meeting award at the 50th Annual Meeting of the American Society of Regional Anesthesia and Pain Medicine.

2 May 2025

Common diabetes drug can reduce the pain of people with knee osteoarthritis and obesity

A common diabetes drug can reduce the pain of people with knee osteoarthritis and overweight or obesity, possibly delaying the need for knee replacements, Monash University-led research has found.

24 Apr 2025

Muscle quality emerges as crucial factor in hip replacement recovery

Hip replacement surgery, or total hip arthroplasty (THA), can lessen pain and improve function in individuals with hip osteoarthritis, but some patients continue to experience long-term physical deficits-including muscle weakness, decreased functional mobility, and increased fall risk-after the procedure.

23 Apr 2025

HSS research highlights faster recovery methods after knee surgery

At this year's American Academy of Orthopedic Surgeons (AAOS) annual meeting, investigators at Hospital for Special Surgery (HSS) presented several significant studies, with three focused on new ways to help patients recover faster after total knee arthroplasty (TKA), also known as knee replacement surgery.

11 Mar 2025

Aston University collaborates on injectable paste for bone cancer treatment

Aston University is collaborating in research to develop an injectable paste which could treat bone cancer.

18 Feb 2025

Scientists pinpoint metabolic failure as the cause of muscle loss in aging

A multi-omics study reveals that impaired branched-chain amino acid (BCAA) catabolism is a key driver of sarcopenia, suggesting it as a potential therapeutic target.

17 Feb 2025

$New clinical trial aims to improve outcomes for older adults with hip fractures$

New clinical trial aims to improve outcomes for older adults with hip fractures

Hip fractures in older adults can lead to serious complications, disability and even death. Traditionally, orthopaedic surgeons have repaired a common fracture of the upper part of the thigh bone, or femur, near the hip using screws and plates to piece together slightly separated pieces of bone.

8 Feb 2025

$USC to lead $10.8 million study on hip fracture surgery options$

USC to lead $10.8 million study on hip fracture surgery options

The University of Southern California has been approved for $10.8 million in research funding by the Patient-Centered Outcomes Research Institute (PCORI) to compare approaches to treating older adults with a fracture of the hip.

4 Feb 2025

Knee replacement surgery outcomes improve with native alignment approach

When performing knee replacement surgery, also called total knee arthroplasty, doctors traditionally try to align the hip, knee, and ankle in a straight line, forming a neutral alignment, rather than replicating the patient's original alignment.

4 Nov 2024

Liposomal bupivacaine shows no advantage in postoperative pain management for older adults

For older adults undergoing hemiarthroplasty for hip fracture, intraoperative use of liposomal bupivacaine does not improve pain scores or other relevant outcomes, compared to conventional bupivacaine, reports a study in The Journal of Bone & Joint Surgery.

19 Sep 2024