Fig. 2From: Bilateral severe heterotopic ossification following primary total knee arthroplasty: a case report in PakistanPostoperative AP view of right knee showing the result of cemented total knee arthroplasty (TKA). b AP view of left knee showing the result of cemented TKA. c. Lateral view of right knee. d Lateral view of left knee. e AP X-ray showing HO on the lateral aspect of distal femur 3 months after TKA. f Lateral view showing HO extending from the tibial tubercle to the proximal tibia. g Postoperative AP view of right knee showing HO on the lateral aspect of distal femur. h Lateral view of right knee showing severe HO on the anterior aspect of distal femurBack to article page