The Value of High-Frequency Repetitive Transcranial Magnetic Stimulation of the Motor Cortex to Treat Central Pain Sensitization Associated With Knee Osteoarthritis

AimChronic pain associated with knee osteoarthritis may develop in connection with a maladaptive process of pain sensitization in the central nervous system. Repetitive transcranial magnetic stimulation (rTMS) has been proposed to treat various pain syndromes related to central sensitization phenomenon, but was never applied in the context of knee osteoarthritis.MethodsA 71-year-old woman presenting clinical evidence of central sensitization of pain associated with left knee osteoarthritis underwent monthly sessions of rTMS delivered at 10 Hz over the right motor cortex.ResultsFrom the week following the third session, she began to improve on various clinical aspects, including pain. After 10 sessions (i.e., almost one year of follow-up), pain was reduced by 67%, especially regarding neuropathic components, while sleep disorders and fatigue also improved by 57–67%. The central sensitization inventory (CSI) score was reduced by 70%.ConclusionThis observation suggests that high-frequency motor cortex rTMS could be a therapeutic option to treat neuropathic pain and psychological symptoms associated with central sensitization developing in the context of chronic osteoarthritis of the knee joint

Prevention of iatrogenic infections in interventional rheumatology: Optimal measures but adapted to each risk

International audienceOsteoarticular iatrogenic infections may be serious and justify suitable and optimised preventive measures depending on each risk, as much in terms of mortality as of morbidity. Its appreciation has been the subject of more and more studies, which allow the importance of the problem to be better evaluated. The level of iatrogenic infections after arthroscopy is evaluated at 1 to 5‰ on a recent series of knee operations, but they may be much higher for the elbow [1] and [2]. In practice, this examination is no longer used for diagnosis as it was 10 years ago, the progress in imagery means this invasive act is no longer necessary..