DEAR DR. ROACH: I have arthritis in both knees, but otherwise, I'm in good health (I'm 5'6" and weigh 130 pounds). My Fitbit indicates I get about 9,000 steps per day. I am ready for knee replacement, but I'm concerned about one activity I do. We usually spend two consecutive weeks at the beach, and I love to boogie board. When the tide is strong, it can take a lot of effort to get out to where the waves are.

Will I still be able to do this after knee surgery? I only do this activity during those two weeks. I live in Ohio, so I am not sure that doctors here understand beach life. -- B.H.

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Dr. Roach regrets that he is unable to answer individual letters, but will incorporate them in the column whenever possible. Readers may email questions to or send mail to 628 Virginia Dr., Orlando, FL 32803.

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