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 ToYourGoodHealth@med.cornell.edu or send mail to 628 Virginia Dr., Orlando, FL 32803.

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