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. 2006 Dec 21;3(1):13–29. doi: 10.1007/s11420-006-9025-0

Fig. 20.

Fig. 20

A typical proximal tibial ring block consists of one ring with 4 points of fixation. Although the two wires have a narrow crossing angle (25 degrees), the 2 half pins prevent any sliding of the ring in the coronal plane. These two wires provide excellent resistance to medial–lateral bending forces