title: Gait after knee arthroplasty for femoral tumor. Foot pressure patterns recorded in 20 patients.
abstract: We evaluated pressure distribution patterns under the feet during gait in 20 patients after resection of malignant bone tumor and endoprosthetic replacement of the distal femur. In all cases, a modular cementless, hinged prosthesis had been used. The examination was performed after 4 (1-6) years. Shortened contact phase, decreased peak pressure, and reduced force-time integral during gait analysis were observed on the operated side. Peak pressure in the heel and the toe regions was decreased and the load (force-time integral) in the metatarsal heads and the big toe regions was reduced. There was a positive correlation between load under the foot and knee extension strength, measured isokinetically.
authors.affiliation: Department of Orthopedics, University of Vienna, Austria.
authors.forename: T
authors.initials: T
authors.lastname: Tsuboyama
authors.forename: R
authors.initials: R
authors.lastname: Windhager
authors.forename: T
authors.initials: T
authors.lastname: Bochdansky
authors.forename: T
authors.initials: T
authors.lastname: Yamamuro
authors.forename: R
authors.initials: R
authors.lastname: Kotz
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001696:Biomechanical Phenomena; D002648:Child; D005260:Female; D005266:Femoral Neoplasms / Q000503:physiopathology / Q000601:surgery*; D005528:Foot / Q000503:physiopathology*; D005684:Gait / Q000502:physiology*; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology*; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D011312:Pressure; D016474:Weight-Bearing