A lot of people who match do not have any research. But they do have excellent credentials otherwise. with ortho being as competitive as it is, for many applicants, doing research seems to be a way to seperate themselves from the rest of the field. From my expirience, labs always need a med student do to some of the less attractive work, so finiding a spot can be as simple as asking around. Seemed to work for me and my friends. good luck.