**Abstract**

Total knee arthroplasty (TKA) is one of the most successful surgical procedures with effective treatment in patients suffering from end-stage knee osteoarthritis. The goal of the operation is to improve pain, correct the deformity, and increase function. However, complications after surgery are the important factors related to dissatisfied TKA. Stiffness, periprosthetic joint infection (PJI), and periprosthetic fracture are among the most common complications following TKA and usually raise issues as concern points for both patients and the surgeons. Each complication needs precise assessment and specific care to prevent further serious issues. In this chapter, the authors will focus and describe all of these three frequent complications in details from their definition to management.

**Keywords:** total knee arthroplasty, complications, stiffness, periprosthetic joint infection, periprosthetic fracture
