Great care needs to be exercised especially around bony areas such although ankle or knee.
Electrical devices range about $30 to $60. Also could be costly depending around size for this area in order to become treated. https://ijcjvqcfsj2znvgh6so66hfod2MGQ6Vijvqp36xa36rjkfqccajq.webpkgcache.com/doc/-/s/Topnj.CO.Kr%2Fbbs%2Fboard.php%3Fbo_table%3Dfree%26wr_id%3D354170