title: Function of reinserted abductor muscles after femoral replacement.
abstract: We compared two methods of reconstruction of the abductor mechanism in 15 patients after prosthetic replacement of the upper femur, to assess abductor strength and function. Six patients in group I had direct fixation of the gluteus medius tendon and a segment of the original bone to the prosthesis. Nine patients in group 2 had the abductor tendon fixed to the iliotibial band. We assessed clinical function, isometric muscle strength and muscle cross-sectional area for each patient. The patients in group 1 had better clinical and functional results (p = 0.059), with average peak torques for hip abduction of 92% of that in the non-operated leg in group 1, and of 57% in group 2. Group 1 had a mean muscle cross-sectional area of 69% and a mean value of strength per cross-sectional area of 134% when compared with the control side. The respective values for group 2 were 52% and 91%. Direct fixation of the abductor muscles to the prostheses gave improved function and higher isometric abductor muscle force.
authors.affiliation: Department of Medical Computer Science, University of Vienna, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Giurea
authors.forename: T
authors.initials: T
authors.lastname: Paternostro
authors.forename: G
authors.initials: G
authors.lastname: Heinz-Peer
authors.forename: A
authors.initials: A
authors.lastname: Kaider
authors.forename: F
authors.initials: F
authors.lastname: Gottsauner-Wolf
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D001860:Bone Plates; D001863:Bone Screws; D002648:Child; D005260:Female; D005269:Femur / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D007085:Ilium; D007537:Isometric Contraction / Q000502:physiology; D008022:Ligaments / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology* / Q000601:surgery; D011474:Prosthesis Design; D016059:Range of Motion, Articular / Q000502:physiology; D013314:Stress, Mechanical; D013710:Tendons / Q000601:surgery; D013977:Tibia; D014057:Tomography, X-Ray Computed; D019415:Torque; D016896:Treatment Outcome