The Veteran's left knee conditions have been evaluated, but the current ratings do not meet or approximate the criteria for a higher rating.

The Veteran's left knee disability, including limitation of flexion and instability, has been rated at 10 percent since January 26, 2011. The appeal for a higher rating is denied.,A separate 10 percent rating for left knee instability is granted, effective from the date of the decision.

The Veteran's left knee disability, including status post reconstruction and degenerative disease, is rated at 20 percent for flexion limitation since January 15, 2019.,An effective date of October 11, 2012, has been granted for the increased rating of 20 percent for left knee status post reconstruction limitation of flexion.,The Veteran's meniscal tear is rated at 10 percent since November 13, 2017.,A separate 10 percent evaluation has been assigned for left knee extension limitation from November 13, 2017.,Left knee instability is separately evaluated at 10 percent throughout the appeal period.,Left knee genu recurvatum is rated at 10 percent beginning December 21, 2021.,Painful left knee scars are rated at 10 percent.,An initial compensable rating of zero percent has been assigned for superficial left knee scars since December 21, 2021.,The Veteran's TDIU claim was denied.

The Board has reopened the Veteran's service connection claims for right and left knee disabilities, but remanded to obtain additional evidence and provide a medical opinion.

The Board denied the veteran's claims for increased ratings for his service-connected lumbar myositis, psychoneurosis and conversion hysteria, residuals of shrapnel wounds of the left thigh and pelvis with retained foreign bodies and scars, and residuals of shell fragment wounds of the right thigh and left leg. The veteran was also denied entitlement to a total disability rating based on individual unemployability due to service-connected disabilities.