Non-metal inserts for bone support assembly

A bone support assembly for treatment of a bone, comprising:

• a bone support implant formed of of a nonresorbable material, the bone support implant having at least one window defined therein for exposure of a selected spacer;
• a first spacer formed of a non-metal material, the first spacer being sized such that it is receivable in the window in an exposed position for transverse fastening through the bone support implant and through the first spacer with a bone fastener;
• and
• a second spacer formed separately from the first spacer, the second spacer being sized such that it is receivable in the window in an exposed position for transverse fastening through the bone support implant and through the second spacer with a bone fastener, the second spacer having different mechanical or chemical treatment properties than the first spacer.

A bone support assembly for treatment of a bone, comprising:

• a bone support implant formed of a non-resorbable material, the bone support implant having a first window extending therethrough, the first window having a first window shape;
• and
• a first insert formed of a non-metal material, the first insert having outer dimensions which correspond to the first window shape, the first insert being received by the first window to secure the first insert relative to the bone support implant, the first insert defining a first insert axis, the first insert having a contact surface which contacts the bone support implant, the contact surface comprising:
• a first portion extending generally parallel to the first insert axis;
• and
• a second portion extending at an angle relative to the first portion, the second portion being wider than the first portion.