This study is a prospective blinded randomized control trial (RCT) where two arms will be assembled. Consenting eligible patients will be randomized to either the physiotherapy + incentive spirometry (PT+IS-intervention) arm or physiotherapy only (PT-control arm). Patients will be randomized with an equal (1:1) chance of being allocated to either the PT (control) arm or PT+IS (intervention) arm. Both the treating surgeon and data interpreter will be blinded to the intervention.