Figures & data
Figure 1. Schematic view of the test set-up according to Stukenborg-Colsmanetal. (Citation2002). 1. Control unit 2. Interface 3. Valve 4. Pressure-valve 5. Tibia frame 6. Femur frame 7. Cylinder (tibia) 8. Cylinder frame 9. Cylinder (quadriceps) 10. Cylinder (hamstrings) 12. Force transducer (quadriceps) 13. Force transducer (tibia) 14. Angle measurement (tibia)
![Figure 1. Schematic view of the test set-up according to Stukenborg-Colsmanetal. (Citation2002). 1. Control unit 2. Interface 3. Valve 4. Pressure-valve 5. Tibia frame 6. Femur frame 7. Cylinder (tibia) 8. Cylinder frame 9. Cylinder (quadriceps) 10. Cylinder (hamstrings) 12. Force transducer (quadriceps) 13. Force transducer (tibia) 14. Angle measurement (tibia)](/cms/asset/dfa67564-bdc9-4b42-8a4e-9abb8aa17160/iort_a_11327418_f0001_b.gif)
Figure 3. Quadriceps forces required to generate an extension moment of 31 Nm under physiological knee conditions, after implantation of non-hinged knee prosthesis (Gemini (GEM; Link, Germany) or Interax I.S.A. (INT;Stryker/Howmedica, Ireland)), or a hinged knee prosthesis (RO, Rotations-Knie; Link, Germany) from 120° knee flexion to full extension. Mean values of 3 repetitions. (Bars represent SD).
![Figure 3. Quadriceps forces required to generate an extension moment of 31 Nm under physiological knee conditions, after implantation of non-hinged knee prosthesis (Gemini (GEM; Link, Germany) or Interax I.S.A. (INT;Stryker/Howmedica, Ireland)), or a hinged knee prosthesis (RO, Rotations-Knie; Link, Germany) from 120° knee flexion to full extension. Mean values of 3 repetitions. (Bars represent SD).](/cms/asset/880bf561-0a68-4f3d-86d5-614a62c2ac8a/iort_a_11327418_f0003_b.jpg)
Quadriceps force to generate an extension moment of 31 Nm under physiologic knee conditions, after implantation of non-hinged knee prosthesis (GEM and INT) and a hinged knee prosthesis (RO): Mean values of 3 repetitions at specific knee flexion angle, with standard deviation (SD), percentage of forces of physiologic knee conditions, significance compared to physiologic knee conditions (p1) and between the types of knee prostheses (p2 and p3)