Achieving a knee disability rating increase requires moving beyond static range of motion tests to prove functional loss during flare-ups under DeLuca and Mitchell. This strategy guide outlines how to leverage BVA case law to maximize ratings for instability, flexion, and extension.
To succeed at the BVA for knee increases, the legal strategy must shift from simple mechanical measurements to the 'functional loss' doctrine established in 38 C.F.R. §§ 4.40 and 4.45. The Board frequently remands or grants increases when the record shows that a C&P examiner failed to provide a quantitative estimate of range of motion loss during flare-ups or after repeated use. Practitioners should focus on the 'DeLuca' factors—pain, fatigue, weakness, and lack of endurance—ensuring the medical evidence reflects the veteran's worst days rather than a single, static point in time during a clinical exam. Furthermore, maximizing a knee rating often involves 'dual rating' strategies that avoid the rule against pyramiding. While a veteran cannot be rated twice for the same manifestation, they can frequently receive separate ratings for limitation of flexion (DC 5260), limitation of extension (DC 5261), and instability (DC 5257) if the symptoms are distinct. Evidence of 'giving way,' 'locking,' or the requirement of a brace is paramount for instability claims, while lay evidence must be used to bridge the gap between clinical findings and the actual functional impairment experienced during daily activities.