>>10675539quick mspaint diagram of the three most common elbow/knee joint types
A is the standard Western action figure elbow/knee joint with a fixed hinge (pinned or pinless). B is the most common Japanese import elbow/knee joint with a round hinge joint that pegs in at both ends. and C is the joint on that Revoltech Yoko, which is probably the most rudimentary joint you can make, as limited in range as A, but ugly asymmetrical sculpting and trivially easy to pop out out place
