Lateral wedge insoles use in osteoarthrtis does not lead to improvement in knee pain, a new study published in JAMA has reported. The study by parkes and colleagues is a meta-analysis to assess the efficacy of lateral wedge treatments and has been published on August 21.
Study found no significant or clinically important association between use of wedge insoles and reduction in knee pain.
osteoarthritis of knee is a very common problem which is chronic, increasing in prevalence and still lacks effective treatment options. Total knee replacement is an effective but costly and is not without the risks of surgery.
Lateral wedge insoles has been commonly used as pain relieving measure after initial studies suggested them to be effective. This kind of wedge is put under the sole of the foot. Its outer [lateral] end is thicker than medial and thus it angulates the foot which helps to transfer loading during weight bearing from the medial to the lateral knee compartment.
In a normal knee, most of the load is transferred through medial compartment
From the medical literature, randomized trials that compared shoe-based treatments like lateral heel wedge insoles or shoes with 5 to 15 degrees angulation, variable stiffness soles with a neutral or no wedge control condition.
For inclusion, the studies must have reported patient-reported pain as an outcome.
A total of 12 trials were chosen. Number of total participants were 885 and 502 persons received lateral wedge treatment.
The researchers found that the overall there was a moderately significant effect of a lateral wedge on pain reduction.
However, the findings were highly heterogeneous across studies.
Moreover the larger trials with a lower risk of bias suggested a no association.
- Lateral Wedge Insoles Not Associated With Improvement of Knee Pain in Osteoarthritis, JAMA Media Release
- Lateral Wedge Insoles as a Conservative Treatment for Pain in Patients With Medial Knee OsteoarthritisA Meta-analysis. JAMA. 2013;310(7):722-730. doi:10.1001/jama.2013.243229
Get more stuff on Musculoskeltal Health
Subscribe to our Newsletter and get latest publications on Musculoskeletal Health your email inbox.
Thank you for subscribing.