Patterns of Wear in Total Knee Replacement
Fig. 12.1 Total knee replacement after 18 years of implantation with massive wear of the tibial polyethylene insert In order to improve the wear performance of TKR, local stresses need…
Extensor Mechanism Deficiency in Total Knee Replacement
Level of deficiency Type of deficiency Treatment options Quadriceps muscle Palsy Functional bracing of ankle and knee to allow knee stability with heel strike and knee flexion with toe loading…
Joint Line Restoration in Revision Total Knee Replacement
Fig. 52.1 Joint line elevation after revision TKR for infected primary TKR. Joint line elevation occurred as a consequence of attempting to match the extension space with the intraoperatively noted…
Discussion to Chap. 15: Lateral Oversizing of Tibial TKR Component Leading to Chronic Irritation of the Iliotibial Tract
Fig. 1 Radiographs (anteroposterior, lateral) of the left knee showing a cruciate-retaining fixed-bearing TKR (Triathlon, Stryker, Switzerland). The patella was unresurfaced. The tibial TKR was slightly oversized in the mediolateral…
Discussion to Chap. 12: Chronic Pain Due to Metallosis After TKR
Fig. 1 Radiographs (anterior, lateral radiographs, skyline view) of the right knee showing a femoral and tibial cemented TKR (Emotion, Aesculap, B.Braun Medical AG, Sempach, Switzerland). A pseudo-patella baja was…
Instability of Total Knee Replacement
Fig. 16.1 Lateral radiograph demonstrating flexion instability with a CR TKR 1. Creating an excessive flexion gap by either undersizing the femoral component or having an excessive posterior tibial slope…
Discussion to Chap. 16: Mid-Flexion Instability After TKR Due to Femoral Malrotation
Fig. 1 Radiographs (anteroposterior, lateral and axial patella) of the left knee showing the posterior-stabilised rotating platform TKR. The patella has not been resurfaced. The TKR component position (varus-valgus) appeared…
Magnetic Resonance Imaging in Total Knee Replacement
Fig. 30.1 MRI of 75-year-old woman after posterior stabilized TKR with a zirconium femoral component. The sagittal MR image shows very little metal susceptibility artifact. The soft tissues including the…
Cementless Versus Cemented Revision Total Knee Replacement
Fig. 47.1 Male patient complaining about stiffness after primary guided motion cruciate substituting TKR (left). After single-stage cemented revision TKR (right, Peter Brehm BPKS RH) Cementing the stems in revision…
Discussion to Chap. 21: “Mechanical” Arthrofibrosis
Fig. 1 Anterior–posterior and lateral weight-bearing radiographs of the right knee indicating osteoarthritis Kellgren–Lawrence grade 3 in several knee compartments A cruciate-retaining total knee replacement (PFC Sigma RP, DePuy, Warsaw,…
