Fretting and Corrosion in Modular Shoulder Arthroplasty: A Retrieval Analysis

Table 3

The modified Goldberg score [9] according to Cusick et al. [11].

Damage	Score	Criteria
Minimal	1	Fretting on <10% of the surface and no corrosion damage
Mild	2	Fretting on >10% of the surface and/or corrosion attack confined to one or small areas
Moderate	3	Fretting on >30% of the surface and/or aggressive local corrosion attack with corrosion debris
Severe	4	Damage over the majority (>50%) of the surface with severe corrosion attack and abundant corrosion debris