This is one of my favorite armbars - hizagatame - the knee armlock. It is very versatile, and in this video you see the instructor demonstrate a lot of wildly divergent variations - some of which we call different things. Here's to the BJJ guys that say judo doesn't have the omoplata...
Patrick Parker, is a Christian, husband, father, judo and aikido teacher, Program Director for a Cardiac Rehab, and a Ph.D. Contact: firstname.lastname@example.org or phone 601.248.7282