Full Breakdown
Testosterone Therapy and Knee Replacement Surgery: New Study Raises Concerns
3/5/2026, 10:48:37 PM
Increased Risks Associated with Testosterone Therapy
A recent study presented at the American Academy of Orthopaedic Surgeons meeting in New Orleans has raised alarms regarding the use of testosterone therapy in patients undergoing knee replacement surgery. The research indicates that individuals who received testosterone therapy within a year prior to their surgery exhibited significantly higher risks of various complications, including infections, blood clots, kidney damage, pneumonia, and knee instability. The study tracked over 13,000 total knee replacement patients, comparing outcomes between those on testosterone therapy and those not receiving the hormone.
Key Findings from the Study
The findings revealed that within 90 days post-surgery, patients on testosterone therapy had increased rates of health complications. Specifically, the incidence of blood clots in the lungs was 1.6% for testosterone users compared to 1.2% for non-users. Similarly, pneumonia rates were 3.3% versus 1.9%, kidney injury rates were 4.2% versus 2.9%, and sepsis rates were 1.9% versus 1.1%. These elevated risks persisted even one year after surgery, with notable differences in rates of deep vein thrombosis, cardiac events, and joint-related complications.
Background on Testosterone Therapy Usage
Testosterone therapy has seen a significant rise in prescriptions, increasing from 7.3 million in 2019 to over 11 million in 2024. Both men and women utilize testosterone to promote healthy aging, enhance muscle and bone density, and improve sexual drive. As knee replacement surgeries are projected to exceed one million annually by 2030, understanding the implications of testosterone therapy on surgical outcomes is becoming increasingly critical.
Official Statements & Responses
Dr. Brian Chalmers, the senior researcher and orthopedic surgeon at the Hospital for Special Surgery in New York City, emphasized the importance of investigating testosterone's effects on post-surgical outcomes, given the growing number of patients undergoing knee replacements. Researchers Arsen and Argen Omurzakov, both medical students involved in the study, noted that testosterone may influence bone remodeling and the immune system, which could affect healing processes.
Criticism & Opposition
While the study highlights significant concerns, researchers also acknowledged the need for further investigation to fully understand how testosterone therapy interacts with knee replacement surgery. The preliminary nature of findings presented at medical meetings necessitates caution until they are published in peer-reviewed journals.
Conflicting Reports & Gaps
Despite the study's findings, there remains a gap in comprehensive understanding regarding the long-term effects of testosterone therapy on surgical outcomes. Further research is essential to clarify the mechanisms by which testosterone may contribute to increased risks in knee replacement patients.
Verbatim Quotes
“Studies also suggest that testosterone influences the way our bones naturally rebuild themselves over time,” — Arsen Omurzakov, Medical Student, Weill Cornell Medical College
“Testosterone levels may also affect the immune system and the microbiomes that affect the immune system, healing and other key functions in the body,” — Argen Omurzakov, Medical Student, Case Western Reserve University
As the medical community continues to explore the implications of testosterone therapy, patients considering knee replacement surgery should consult their healthcare providers regarding the potential risks associated with hormone therapy.
