The Board has remanded the claims for a back disability, left hip strain, and right knee strain as secondary to service-connected disabilities due to incomplete reasoning in previous VA medical opinions.

The Board remands the issue of entitlement to service connection for a back disability due to a duty to assist error, specifically regarding VA's failure to provide the Veteran with a VA examination prior to the rating decision.

The Board granted service connection for left knee strain, right knee strain, right wrist strain, and TBI. The Veteran's PTSD rating was remanded for further development.

The Board remands the claims for a rating in excess of 10 percent for bilateral hip and knee disabilities, as well as a TDIU claim, to ensure adequate VA examinations are conducted.

The Board granted service connection for left hip iliopsoas tendonitis, right knee strain, and left knee strain as secondary to lumbosacral strain. Service connection was also granted for cannabis use disorder as secondary to mental health conditions of PTSD, major depressive disorder with alcohol use disorder, and TBI. However, the Board denied an initial disability rating in excess of 70 percent for PTSD and granted a separate disability rating of 40 percent for TBI.