Biofreeze and the Effect on Knee Osteoarthritis

Knee Osteoarthritis

Osteoarthritis, Pain management, Menthol, Knee

Knee osteoarthritis (OA) is a progressive disease that can be accompanied by considerable joint pain and dysfunction. It is a goal in the medical field to find effective treatments for knee OA that are non-interventional, have minor or no negative side effects, and are relatively easy to administer for the patient and health care professionals. Biofreeze, a topical analgesic containing menthol, is an easily accessible gel, with no known serious negative side effects. If the application of Biofreeze can reduce the pain and dysfunction associated with knee OA, it could be an effective treatment for patients. The objective of the study is to assess how 4 weeks of Biofreeze application to a knee affected by OA effects pain and dysfunction associated with the disease.

Knee osteoarthritis (OA) is a disease which results in deterioration with articular cartilage and bone tissue of the knee joint (Felson et al., 2000). The disease is prevalent in the elderly and as it progresses, can cause serious joint pain and a lot of knee dysfunction (National Collaborating Centre for Chronic Conditions, 2008). In addition to surgical intervention, there are currently a multitude of non-surgical interventional treatments which have been used to help patients deal with the pain and dysfunction associated with OA. This includes exercise, weight loss, orthotics, topical and oral medications, therapeutic modalities and even more (Dadabo, Fram, and Jayabalan, 2019). While the aforementioned treatments all have advantages, there are some disadvantages including but not limited to; negative side effects of oral medications, exercise intolerance secondary to pain as well as risk of injury, difficulty in maintaining a healthy diet, cost associated with receiving therapeutic modalities, all of which could make the treatments impractical for some or all patients. It is a goal for health researchers, to discover a treatment which can significantly reduce pain and dysfunction associated with knee OA while also limiting the negative side effects or difficulties associated with using the treatment. There are a few studies which have looked at the effect of topical treatments on symptoms associated with knee OA. One study performed a double-blind, randomized, placebo-controlled clinical trial using linseed oil (Mosavat et al., 2018). This study found that the administration of linseed oil significantly reduced pain and other symptoms associated with knee OA compared to the control. Another study used a topical non-steroidal anti-inflammatory drug (NSAID) to treat knee OA pain (Bookman, Williams, and Shainhouse, 2004).This study also found that the treatment helped with pain, the drug was accompanied with some local skin irritation and minimal systemic side effects (Bookman et al.,2004). Biofreeze, a topical analgesic containing menthol, is a relatively cost-efficient item with no known adverse side effects. If the administration of Biofreeze to a knee affected with OA relieves pain and symptoms associated with OA, it could be a safe and effective treatment for knee OA patients to use. The primary objective in this study is to assess the affects of a menthol based topical agent on osteoarthritis of the knee. Outcome measures are based on scores obtained from the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). The WOMAC questionnaire is a patient-administered questionnaire that contains 24 questions, targeting areas of pain, stiffness and physical function, and can be completed in less than 5 minutes. The questionnaire will be given to the patients at the beginning and at the end of the 4 week study to compare differences.

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