Contact pressure and three-dimensional tracking of unresurfaced patella in total knee arthroplasty

Abstract Ten fresh-frozen cadaver knees were studied to investigate the contact pressure distribution and three dimensional (3-D) tracking of the patella under consecutive three different conditions. They have included (a) an intact knee, (b) the unresurfaced patella in bicompartmental knee arthroplasty (Bi-TKA), and (c) the resurfaced patella in tricompartmental knee arthroplasty (Tri-TKA). A pressure-sensitive conductive rubber (PSR) sensor system was developed to measure the patellar contact pressure dynamically, and two sets of high resolution video cameras with direct linear transformation method was used to measure the 3-D patellar tracking. Total contact area on the patella was decreased in Bi-TKA, and further decreased in Tri-TKA. However, patellar contact area was significantly less in Tri-TKA than in the intact knee in 0 to 100 degrees of knee flexion ( P P

[1]  L. Whiteside,et al.  The effect of patellar button placement and femoral component design on patellar tracking in total knee arthroplasty. , 1992, Clinical orthopaedics and related research.

[2]  R Poss,et al.  Long-term complications after total knee arthroplasty with or without resurfacing of the patella. , 1993, The Journal of bone and joint surgery. American volume.

[3]  R. L. Linscheid,et al.  Force distribution across wrist joint: application of pressure-sensitive conductive rubber. , 1992, The Journal of hand surgery.

[4]  H. Daubert,et al.  Should the patella be resurfaced in total knee arthroplasty? Efficacy of patellar resurfacing. , 1988, Clinical orthopaedics and related research.

[5]  L. Latta,et al.  Comparison of patellar resurfacing versus nonresurfacing in bilateral total knee arthroplasty. , 1990, Clinical orthopaedics and related research.

[6]  R. E. Jensen,et al.  All‐Polyethylene Patellar Components Are Not the Answer , 1991, Clinical orthopaedics and related research.

[7]  J D Reuben,et al.  The effect of femoral component position on patellar tracking after total knee arthroplasty. , 1990, Clinical orthopaedics and related research.

[8]  R. Scott,et al.  The patellofemoral component of total knee arthroplasty. , 1988, Clinical orthopaedics and related research.

[9]  W C Hayes,et al.  Patellofemoral contact pressures. The influence of q-angle and tendofemoral contact. , 1984, The Journal of bone and joint surgery. American volume.

[10]  G. Makris,et al.  Evaluation of Contact Stress in Metal‐Backed Patellar Replacements , 1991, Clinical orthopaedics and related research.

[11]  G. Picetti,et al.  The patellofemoral joint after total knee arthroplasty without patellar resurfacing. , 1990, The Journal of bone and joint surgery. American volume.

[12]  J. Insall,et al.  Total knee arthroplasty without patellar resurfacing. , 1986, Clinical orthopaedics and related research.

[13]  L. Whiteside,et al.  The effects of axial rotational alignment of the femoral component on knee stability and patellar tracking in total knee arthroplasty demonstrated on autopsy specimens. , 1993, Clinical orthopaedics and related research.

[14]  C. Ranawat,et al.  The patellofemoral joint in total condylar knee arthroplasty. Pros and cons based on five- to ten-year follow-up observations. , 1986, Clinical orthopaedics and related research.

[15]  R Huiskes,et al.  The three‐dimensional tracking pattern of the human patella , 1990, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[16]  J. Challis,et al.  Accuracy assessment and control point configuration when using the DLT for photogrammetry. , 1992, Journal of biomechanics.

[17]  Y. Yoshioka,et al.  The anatomy and functional axes of the femur. , 1987, The Journal of bone and joint surgery. American volume.

[18]  J. Goodfellow,et al.  Patello-femoral joint mechanics and pathology. 1. Functional anatomy of the patello-femoral joint. , 1976, The Journal of bone and joint surgery. British volume.