Editor’s Choice – Feb 3, 2014

The article “Adult human mesenchymal stem cells delivered via intra-articular injection to the knee following partial medial menisectomy” is an interesting report of a randomized, double-blind, controlled study carried out over a 2-year period following subtotal medial menisectomy.

While the positive impact of mesenchymal stem cells (MSCs) on both the meniscus and articular cartilage has been demonstrated in animal models, this study looks at the potentially  beneficial effects in humans after partial menisectomy. MSC injection in this setting resulted in no apparent complication secondary to these injections. Pain in patients with osteoarthritis was also improved over 2 years compared to those patients treated only with hyaluronate injection.  Most intriguing, though, was that in 24% of patients with lower dose MSC and in 6% with higher dose MSC, there was an increase in meniscal volume on MRI by > 15%. None in the control group showed any volume change.

With the large number of meniscal injuries treated surgically in all age groups, MSC injection following partial menisectomy may prove to be a safe method to decrease osteoarthritic pain and potentially increase the volume of the remaining meniscus.

Read more here.

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