Figure 1
From: Comparison of transverse wires and half pins in Taylor Spatial Frame: A biomechanical study
A typical test setup suing half pins. The bone is held by the mount at the top end of the test frame and the ring is held rigidly by the bottom end of the frame. The weakest link in the setup is wires or pins connecting the bone to the rings. When load is applied to the bone from the top end it will displace depending on how rigidly it is held by wires or pins.