Juji-gatame from Mount

After tori (white gi) gained the full-mount, uke (black shirt) attempts to push him off with his arms. Tori takes advantage of uke's straightened arms and begins to apply juji-gatame.

Tori quickly shifts to the side and takes hold of uke's outstretched arm. He is now at a perpendicular angle to uke's body. Tori's left knee is brought up against the tricep of the attacked arm to eliminate space.

Maintaining the pull on uke's arm, tori brings his left leg over tori's face. The movement is kept tight and the pull upon the arm strong to prevent escape. Notice how tori's body is centered upon uke, keeping weight upon his body.

Tori's leg comes over uke's face. The control of the arm lock must come before tori's hips touch the ground. If the leg is placed over uke's face while sitting, it allows uke to turn into tori's body and come to his knees easily.

As tori's hips touch the ground, uke's arm is further extended and tori presses his knees together to maintain tight control of uke's arm. Tori's falling momentum assists in bringing uke's arm to full extension as tori leans backwards.

Tori straightens his body and raises his hips, hyper-extending uke's elbow joint. Downward pressure is applied by tori's legs across uke's chest to prevent a turn-in escape and to increase the leverage of juji-gatame. Having uke's thumb point away from tori's body (as shown above) reduces the resistance to the technique by decreasing the mechanical strength of uke's bicep. Once uke feels discomfort, he submits (tapping-out). If not, his elbow will be dislocated!