Total Knee Arthroplasty Designed to Accommodate the Presence or Absence of the Posterior Cruciate Ligament

Figure 3

In vivo sagittal plane fluoroscopic images acquired during kneeling and lunge activities (a, b) were analyzed using a shape-matching procedure for fitting the prosthesis surface models to the image silhouettes (c, d) and calculating the position and orientation of the femoral component relative to the tibial component (e, f).