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Hamelynck Kj. Stability Of The Knee, A Dynamic Concept

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STABILITY OF THE KNEE A dynamic concept KJ Hamelynck Amsterdam/Roma
“ Why are total knee arthroplasties failing today?” Peter F. Sharkey, MD; William J. Hozack, MD; Richard H. Rothman, MD, PhD; Shani Shastri, MD; Sidney M. Jacoby, BA Clinical Orthopaedics and Related Research , november 2002 pag 7-14
“ Current etiologies and modes of failure in total knee arthroplasty revision” Kevin J. Mulhall, Hassan M. Ghomrawi, Sean Scully, John J. Callighan, Khaled J. Saleh Clinical Orthopaedics and Related Research 446, pg 45-50, 2006
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],int/ext rotation ad/abduction flexion/extension
[object Object],medial/lateral superior/inferior anterior/posterior
Forced internal/external rotation Blankevoort et al., J Biomech 1988 moment 3 external rotation -3 moment [Nm] internal rotation -30 º 30 º
Flexion and internal/external rotation Blankevoort et al., J Biomech 1988 External rotation Internal rotation Flexion 160 º 140 º 120 º 100 º 80 º 60 º 40 º -20 º 20 º -30 º -20 º -10 º 10 º 20 º 30 º
Flexion and internal/external rotation Blankevoort et al., 1988; Van Kampen, thesis 1987 External rotation Internal rotation Flexion 160 º 140 º 120 º 100 º 80 º 60 º 40 º -20 º 20 º -30 º -20 º -10 º 10 º 20 º 30 º
Flexion & rotation during gait M.A. Lafortune et al., J Biomech 1992
External rotation Internal rotation Flexion 80 º 60 º 40 º - 20 º 20 º -20 -10 º 10 º 20 º Flexion & rotation during gait M.A. Lafortune et al., J Biomech 1992 Swing phase Toe off Heel strike Stance phase
The envelope of passive motion M.A. Lafortune et al., J Biomech 1992 External rotation Internal rotation Flexion 160 º 140 º 120 º 100 º 80 º 60 º 40 º -20 º 20 º -30 º -20 º -10 º 10 º 20 º 30 º Swing phase Stance phase
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],80 20 100 20 Stair descending 60 10 275 6 Stair ascending 60 20 60 100 Ramp descending 100 15 140 15 Ramp climbing 50 20 80 40 Level walking LCL MCL PCL ACL
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Hamelynck Kj. Stability Of The Knee, A Dynamic Concept

  • 1. STABILITY OF THE KNEE A dynamic concept KJ Hamelynck Amsterdam/Roma
  • 2. “ Why are total knee arthroplasties failing today?” Peter F. Sharkey, MD; William J. Hozack, MD; Richard H. Rothman, MD, PhD; Shani Shastri, MD; Sidney M. Jacoby, BA Clinical Orthopaedics and Related Research , november 2002 pag 7-14
  • 3. “ Current etiologies and modes of failure in total knee arthroplasty revision” Kevin J. Mulhall, Hassan M. Ghomrawi, Sean Scully, John J. Callighan, Khaled J. Saleh Clinical Orthopaedics and Related Research 446, pg 45-50, 2006
  • 4.
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  • 7. Forced internal/external rotation Blankevoort et al., J Biomech 1988 moment 3 external rotation -3 moment [Nm] internal rotation -30 º 30 º
  • 8. Flexion and internal/external rotation Blankevoort et al., J Biomech 1988 External rotation Internal rotation Flexion 160 º 140 º 120 º 100 º 80 º 60 º 40 º -20 º 20 º -30 º -20 º -10 º 10 º 20 º 30 º
  • 9. Flexion and internal/external rotation Blankevoort et al., 1988; Van Kampen, thesis 1987 External rotation Internal rotation Flexion 160 º 140 º 120 º 100 º 80 º 60 º 40 º -20 º 20 º -30 º -20 º -10 º 10 º 20 º 30 º
  • 10. Flexion & rotation during gait M.A. Lafortune et al., J Biomech 1992
  • 11. External rotation Internal rotation Flexion 80 º 60 º 40 º - 20 º 20 º -20 -10 º 10 º 20 º Flexion & rotation during gait M.A. Lafortune et al., J Biomech 1992 Swing phase Toe off Heel strike Stance phase
  • 12. The envelope of passive motion M.A. Lafortune et al., J Biomech 1992 External rotation Internal rotation Flexion 160 º 140 º 120 º 100 º 80 º 60 º 40 º -20 º 20 º -30 º -20 º -10 º 10 º 20 º 30 º Swing phase Stance phase
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