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Stride analysis after proximal tibial replacement

G L Zohman1, D L Boardman, J J Eckardt

  • 1Department of Orthopaedic Surgery, University of California, Los Angeles, USA.

Clinical Orthopaedics and Related Research
|June 1, 1997
PubMed
Summary
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Intraarticular proximal tibial replacement provides comparable gait to above-knee amputation prostheses. This study found similar stride length and stance time symmetry between the two groups, suggesting effective endoprosthetic reconstruction.

Area of Science:

  • Orthopedic Surgery
  • Biomechanics
  • Prosthetics

Background:

  • Intraarticular proximal tibial replacement is a reconstructive surgical procedure.
  • Above-knee amputation often requires external prostheses for mobility.

Purpose of the Study:

  • To compare gait parameters between patients with intraarticular proximal tibial replacement and those with above-knee amputation using external prostheses.
  • To evaluate the functional outcomes of endoprosthetic reconstruction in the knee.

Main Methods:

  • Stride analysis was conducted on ten patients who underwent intraarticular proximal tibial replacement and five control subjects with above-knee amputation.
  • Gait velocity, stride length, cadence, and stance time symmetry were measured over a 6-m walkway at a self-selected pace.

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Main Results:

  • Gait velocity was 79.2 m/min for tibial replacement versus 71.4 m/min for amputation.
  • Cadence was 112.4 steps/min for tibial replacement versus 110.1 steps/min for amputation.
  • No significant differences were found in stride length (1.41 m vs 1.43 m) or stance time symmetry (0.90 vs 0.87).

Conclusions:

  • Endoprosthetic reconstruction of the proximal tibia results in gait parameters comparable to those achieved with external prostheses after above-knee amputation.
  • This suggests that intraarticular proximal tibial replacement can restore functional mobility effectively.