| 摘要 |
<p>One embodiment of a spinal spacer (10) includes an anterior wall (11) having a convexly curved anterior surface and opposite ends (12, 13), a posterior wall (15) having opposite ends (16, 17), two lateral walls (20, 21), each integrally connected between the opposite ends (12, 13, 16, 17) of the anterior (11) and posterior (15) walls to define a chamber (30). The walls (11, 15, 20, 21) include a superior face (35) and an inferior face (38), each defining friction or vertebral engaging surfaces. In one specific embodiment, a solid D-shaped spacer (40) is provided. In another specific embodiment, the spacer (10, 40) is composed of a biocompatible bone ingrowth material that has a sufficient surface roughness to provide a friction fit. In a still another embodiment, the bone ingrowth material includes a plurality of continuous interconnected pores that contain a bone morphogenic protein to facilitate bone ingrowth into the spacer.</p> |
