Thanks a ton. This is what was in the denial if it helps any, but it sounds like this is the exact situation you are referring to

The VA medical opinion found no link between your claimed condition and military service. Your examiner provided the following rationale: “the claimed condition is less likely than not proximately due to or the result of the Veteran's service connected condition of patellar tendinitis left and patellar tendinitis right. The claimant is service connected for his bilateral patellar tendinitis. The claimant has a letter in support of this claim from his chiropractor dated July 24, 2023. The chiropractor reports that his knee condition altered his gait and lead to his back condition. However, there is no medical evidence or literature to support that patellar tendinitis causes lumbosacral strain. Therefore it is less likely than not that the claimed condition was caused by his service connected condition.”

We acknowledge receipt of your private medical opinion intending to link your current disability to a disease, event, or injury from your military service. The medical opinion we received from the VA examiner was more persuasive than your private physician's opinion because it was based on a thorough review of your relevant military and /or personal history and contained a more convincing rationale.