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# Weight-Bearing/High-Utilization Areas & Cartilage Grading


# Cartilage Grade Levels
*Determined by Defect **Location** Relative to the Weight Bearing or High Utilization Region of a Graft.*

Grade 1: Pristine cartilage, no defects of that type (minor Rough Areas and striations OK)
Grade 2: Defects **outside** a WB/HU region.
Grade 3: Defects **inside** a WB/HU region.
Grade 4: No usable cartilage. 

# Weight Bearing Regions of HemiCondyles
*The Weight Bearing Regions begin where the trochlear cut would be made (45° from intercondylar notch) and end at where the posterior curvature starts. *

![Lateral HemiCondyle](https://storage.crisp.chat/users/helpdesk/website/45175be43c538400/rlhc-wb_dl7lge.jpg)

![Medial HemiCondyle](https://storage.crisp.chat/users/helpdesk/website/45175be43c538400/rmhc-wb_1129l2l.jpg)

# Weight Bearing/High Utilization Regions of the Distal Tibia and Talus
*The WB/HU Region of the Distal Tibia comprises of the lateral 1/3 of the cartilage surface. The WB/HU Region of the Talus encompasses most of the talar dome, skewed slightly to the medial portion of the dome.*

![Distal Tibia](https://storage.crisp.chat/users/helpdesk/website/45175be43c538400/rdta-hu_1o777q8.jpg)

![Talus](https://storage.crisp.chat/users/helpdesk/website/45175be43c538400/ltal-wb2_1crtfxm.jpg)