Transforaminal Lumbar Interbody Fusion (TLIF) Features & Benefits of the Transforaminal Lumbar Interbody Fusion (TLIF): The comprehensive and versatile Tyber Medical TLIF Interbody Spacer was designed for ease of use. The Transforaminal Lumbar Interbody Fusion (TLIF) spacer offers the following features and benefits: Optional TyPEEK™ Titanium Plasma Spray Anatomical Endplate Contact Large Graft Window PEEK-Optima™ Core Simple Instrumentation Non-sterile and Sterile Packaging Options Low or High Curvature Multiple Lordotic Angles (0 to 5°) Multiple Lengths (26 to 34mm) Width Options (10 and 12mm)