iOvera Therapy and Knee Replacement
In physical therapy, we are generally trying to avoid pain. The one exception; knee replacement. Total knee replacement is well known to be the most painful of the rehab experiences, with rotator cuff repair to be a closed second. IOvera therapy is a relatively new treatment (2014) that may help the process.
iOvera Therapy is a treatment designed to reduce knee pain before surgery. It works by targeting the small sensory nerves around the knee that send pain signals to the brain. Using a controlled cold therapy, the nerves are temporarily numbed, helping to reduce the pain without the need for heavy medications. The effects are temporary, usually lasting several weeks, which makes it an ideal solution for pre-surgery preparation.
The process is simple and done in an outpatient setting. The clinician will first identify the nerves causing your knee pain. Then, the iOvera device delivers precise cold therapy to those nerves. Most patients notice reduced pain within a few days, which can make everyday activities like walking or stretching more comfortable. The hope is that this therapy will extend well into the rehab process making it more tolerable.
Using iOvera Therapy before surgery also helps reduce the need for pain medications and lowers the stress and anxiety often associated with chronic knee pain. Many patients report feeling more confident and prepared going into their procedure because their knee is already less painful and easier to move. This can translate into a smoother recovery and better overall outcomes. After treatment, most people can resume daily activities immediately. Temporary numbness or tingling around the knee is normal and usually goes away as the nerves gradually regain sensation.
What the research says:
Pain Reduction Before and After Surgery
Studies have shown that iOvera can significantly reduce knee pain in patients with osteoarthritis or chronic knee pain.
A clinical trial published in The Journal of Pain Research evaluated patients with knee osteoarthritis who underwent targeted cryoneurolysis. Patients reported meaningful reductions in pain scores for several weeks, often long enough to cover the preoperative period before knee replacement.
Patients also noted improved function and mobility, which is crucial for pre-surgery physical conditioning.
Reduced Need for Opioids
Research indicates that iOvera can help reduce reliance on opioid pain medications. A study in Pain Medicine found that patients treated with targeted cryoneurolysis used fewer postoperative pain medications and reported less opioid-related side effects compared with traditional pain management.
Safety and Side Effects
iOvera is generally considered safe. Reported side effects are mostly mild and temporary, including numbness, tingling, or mild bruising at the treatment site.
There’s minimal risk of motor impairment because the therapy targets sensory nerves specifically.
Preoperative Benefits
Emerging evidence suggests that managing pain effectively before knee replacement can lead to better surgical outcomes and faster recovery. While research specifically studying iOvera as a preoperative intervention is limited, studies on cryoneurolysis in general support the idea that reducing pain and improving mobility before surgery can enhance post-operative rehabilitation.
References:
Manchikanti L, et al. (2019). “Cryoneurolysis for the management of chronic knee pain: a systematic review.” Pain Physician, 22(6): 571–582.
Hayes Inc. (2021). “iOvera Cryoneurolysis for Osteoarthritis Knee Pain.” Health Technology Assessment.
Chin KJ, et al. (2020). “Cryoneurolysis in the treatment of chronic knee pain.” Journal of Pain Research, 13: 2489–2498.
Ilfeld BM, et al. (2019). “Targeted Peripheral Nerve Cryoneurolysis Before Knee Arthroplasty: Pilot Study.” Pain Medicine, 20(12): 2455–2462.
Maheshwari AV, et al. (2020). “Peripheral Nerve Cryoablation for Pain Management After Total Knee Arthroplasty.” Anesthesia & Analgesia, 130(1): 50–58.
