Brittle Bones, Torn Shoulders: New Study Reveals Genetic Link Between Osteoporosis and Rotator Cuff Tears
Table of Contents
A groundbreaking new study published October 3, 2025, in Bone Research reveals a meaningful connection between osteoporosis and rotator cuff tears (RCTs), offering fresh insights into the biological factors driving both conditions and potentially paving the way for more targeted prevention and treatment strategies. Researchers have discovered that individuals with osteoporosis are considerably more likely to experience painful shoulder injuries, particularly women, and have identified shared genetic variants influencing both bone and tendon health.
The Rising Burden of Shoulder Pain and Bone Weakness
Rotator cuff tears are a common cause of shoulder pain and disability, affecting nearly one in three people over the age of 60. Osteoporosis, a condition characterized by weakened bones, affects millions worldwide, increasing the risk of fractures.This new research suggests a previously underappreciated link between these two prevalent conditions.
jin Ma and Dr. Hongmin Cai from South China University of Technology, along with Dr. Xiaofei Zheng from Jinan University, the research team analyzed health and genetic data from nearly 458,000 individuals within the UK Biobank – a extensive resource tracking the health of over half a million people. Over an 11-year period, they tracked more than 268,000 participants, employing advanced statistical methods to isolate the relationship between osteoporosis and RCTs, accounting for factors like age, sex, and lifestyle.
“Our results provide strong evidence that osteoporosis significantly increases the risk of rotator cuff tears,” explained a senior researcher involved in the study. “This suggests that managing bone health could also play a critical role in preventing these painful shoulder injuries.”
Striking Findings: A 56% Increased Risk, Especially for Women
The findings were compelling. Individuals diagnosed with osteoporosis were 1.56 times more likely to suffer a rotator cuff tear compared to those without the condition. Notably, the risk was particularly pronounced among women, suggesting a link to hormonal changes, specifically the decline in estrogen following menopause, which can accelerate both bone loss and tendon damage.
“The sex differences we observed suggest that women may require special monitoring and earlier interventions for rotator cuff health if they also have osteoporosis,” noted a lead investigator.
Genetic Roots: Identifying the PKDCC Gene
to explore the underlying mechanisms, researchers delved into the genetic data, identifying six points in the genome that appear to influence both osteoporosis and RCTs. A variant near the PKDCC gene stood out, consistently appearing across multiple datasets. This gene is known to play a role in regulating both bone and tendon tissue,offering a potential biological explanation for the observed connection.
Beyond Calcium and Vitamin D: Implications for Treatment
Interestingly, the study found that common supplements like calcium and vitamin D did not demonstrate a reduction in the risk of shoulder injuries. This suggests that more robust osteoporosis treatments – including prescription medications or hormone therapies – may offer greater preventative benefits, tho further inquiry is needed. Currently, nearly a quarter of rotator cuff surgical repairs fail within two years, highlighting the urgent need for improved preventative strategies.
A Dual Benefit: Protecting Bones and Shoulders
Dr.Zheng emphasized, “Our study suggests that preventing or treating osteoporosis may also reduce the likelihood of rotator cuff tears. This dual benefit could improve quality of life for millions of aging individuals worldwide.” While the study focused on individuals with diagnosed tears, the authors acknowledge the need for further research to examine undiagnosed cases and fully elucidate the mechanisms linking osteoporosis to tendon weakness through laboratory studies.
The research represents a significant advancement in musculoskeletal research, demonstrating the interconnectedness of bone and tendon health. “These findings remind us that bone and tendon health are deeply interconnected,” concluded Dr. ma. “by recognizing and addressing this relationship, we might potentially be able to develop new strategies to protect both, ensuring healthier and more active lives as people age.”
More information:
Yibin Liu et al, Association between osteoporosis and rotator cuff tears: evidence from causal inference and colocalization analyses, Bone Research (2025). DOI: 10.1038/s41413-025-00450-z
