An Unusual Presentation of Non Union of Patella with Full Range of Movements of the Knee Joint

We report a 70 year old retired male leading a sedentary lifestyle, who had presented to us with deformity of his left knee (Figure 1). The authors took a detailed history and traced that he had a history of fall 10 years back and suffered an injury to his left knee. He didn’t undergo any medical or surgical treatment for the same. He has been doing all his daily activities and work normally since then. Clinical examination revealed that there was no bony tenderness and had complete range of movements of his knee joint (Figure 2). Radiograph of his knee joint showed an old widely displaced two-part patella fracture (Figure 3). The possible explanation for his complete lack of symptoms and complete range of movements of the knee is due to development of pseudoarthosis of the patella.