The wrists are tied together in front of, not behind, the captive. The ankles are also tied together and the wrist and ankle ropes joined. Unlike a jackknife, the knees are bent. The wrist to ankle join prevents the captive from bringing his or her hands near the mouth to remove a gag or use the teeth to untie ropes.
The elbows may be outside the knees (so the knees can be tied together) or between them; in an asymmetric bondage, only one elbow is between the knees. Additional ropes can be placed around the elbows and knees to reinforce the bondage.