Many people who live with ongoing pain are constantly searching for better ways to feel relief. Knee arthritis, also known as knee osteoarthritis, is one of the most common causes of pain, especially in older adults.
It happens when the cartilage in the knee joint wears down over time, leading to stiffness, swelling, and pain during movement.
Because pain can be difficult to manage, some patients and even doctors have started to explore new treatment combinations. One idea is to use cannabis together with opioids. Opioids are strong pain-relieving drugs often used for moderate to severe pain, while cannabis contains compounds that may affect how the brain processes pain signals.
Some earlier studies in animals suggested that these two substances might work better together than alone. This raised hope that combining them could offer stronger pain relief while possibly lowering the need for high doses of opioids. However, a new study published in the journal Anesthesiology suggests that this may not be the case in humans.
The study was led by researchers including Dr. Katrina R. Hamilton from Ohio University and Johns Hopkins School of Medicine. It carefully tested how cannabis and opioids affect pain, both separately and together.
The study included 21 adults with knee osteoarthritis. Each participant took part in four different sessions. In each session, they received a different combination of treatments. These included a placebo (an inactive pill), an opioid called hydromorphone, a cannabis-based drug called dronabinol, or a combination of both drugs.
The order of these treatments was random, and neither the participants nor the researchers knew which treatment was given at each session. This type of design helps ensure the results are fair and unbiased.
During each session, the researchers tested how sensitive participants were to different types of pain, including pressure, heat, and cold. They also asked participants to rate their knee pain and checked how the treatments affected thinking, memory, and overall wellbeing.
The results were surprising. The opioid alone did reduce sensitivity to certain types of pain in the laboratory tests. However, it did not significantly reduce the participants’ own reports of knee pain. The cannabis-based drug did not show clear pain relief in the tests either.
Most importantly, combining the two drugs did not improve pain relief. Instead, it led to stronger side effects. Participants reported feeling more drowsy, dizzy, and mentally slowed when taking both drugs together. This suggests that the combination may increase risks without offering extra benefits.
The researchers noted that many people believe cannabis can boost the effects of opioids, but this study does not support that idea, at least in this controlled setting.
However, there are some limits to the study. The participants had never used cannabis before, and they were given a single dose in a laboratory environment. In real life, people may use cannabis differently, starting with low doses and adjusting over time. This could change both its effects and side effects.
In reviewing the study, the findings are important because they challenge a common belief and are based on a well-designed clinical trial. However, the small number of participants and the controlled setting mean that the results may not fully reflect real-world use. More research is needed to explore long-term use, different doses, and different patient groups.
Overall, the study suggests that combining cannabis with opioids may not be an effective way to treat knee arthritis pain and may increase unwanted side effects.
If you care about pain, please read studies about how to manage your back pain, and Krill oil could improve muscle health in older people.
For more health information, please see recent studies about how to live pain-free with arthritis, and results showing common native American plant may help reduce diarrhea and pain.
Source: Ohio University.
