Thank you for your question.  Your picture is very clear, but my research through many pictures of apple diseases and pests did not find anything like what is affecting your tree.  My advice would be to prune a sample and take it to your local extension agent.  Franklin County office is at 2548 armack Rd. Columbus.  Telephone number:<personal data hidden>.  I think that pruning will be the answer in the long run, but a definite identification would be needed.  Please let me know what you find.  Contact me as needed.  <personal data hidden> should appear with my signature.