By eHow Sports & Fitness Editor
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While the use of ankle locks has been generally discouraged in such grappling sports as judo and brazilian jiu-jitsu, this type of submission technique is making a comeback in sport sambo competition. Sambo, which is a Russian martial art similar to judo, emphasizes using leg and ankle locks and applying pressure to the Achilles tendon to force your opponent to surrender.
eHow Sports & Fitness Editor