Uncemented application of cemented LCS knee prosthesis leading to knee pain.

(DePuy Orthopaedics Inc, Warsaw, Ind) prosthesis is a total condylar, low contact stress, mobile bearing prosthesis, which allows retention or excision of the posterior cruciate ligament. The cemented version has a sandblasted finish on cobalt-chromemolybdenum metallic surface for cement fixation, whereas the cementless version uses Porocoat sintered beads (DePuy) for bone ingrowth (Figure 1). This article highlights a previously unreported cause of knee pain after arthroplasty, and emphasizes the importance of a surgeon’s familiarity with implant components. This is particularly relevant to the low-volume arthroplasty surgeon who is more susceptible to complications.1