Fig. 11From: Polyetheretherketone implants with hierarchical porous structure for boosted osseointegrationSurface modification of PEEK-based intervertebral fusion cage. A, B Lateral view and C, D) Top view of PEEK-cage and SPCP-cage. PEEK-cage: unmodified cage, SPCP-cage: cage surface with 3D hierarchical porous structure coupled with low-temperature oxygen plasma treatmentBack to article page