Fig. 1.

Figs. 1-A through 1-D Standard and active locking plates. Fig. 1-A The standard locking plate (LP) and active locking plate (ACTIVE) were identical, with the exception of elastic suspension of locking holes in ACTIVE plates. Figs. 1-B and 1-C Cross-section and semitransparent illustration of an ACTIVE plate. Fig. 1-D Sliding element with locking hole, embedded in silicone envelope.