Daitō-ryū Aiki-jūjutsu
Hapkido is well known for its use of a wide variety of wristlocks. These techniques are believed to have been derived from Daitō-ryū Aiki-jūjutsu although their manner of performance is not always identical to that of the parent art. Still many of the techniques found in hapkido are quite similar to those of Daito-ryu and of Aikido, which was derived from that art. Examples of such techniques are: the supinating wristlock, pronating wristlock, internal rotational wristlock, and the utilization of pressure points on the wrist. These techniques are common to many forms of Japanese Jujutsu, Chinese chin na, and even "catch as catch can" wrestling.