The fixation of porous-coated femoral stems. A radiographic study of 113 cases with a 4 to 8 year follow up.
Changes occurring in the fixation of 113 porous-coated PCA uncemented femoral stems were studied in 90 patients who were operated on between 1984 and 1988. The average follow up was 5 years. Fixation was classified in radiographs as osteointegration, stable fibrous fixation or unstable. Four femoral components were revised. Metaphyseal osteoporosis was associated with those with a stem diameter greater than 13 mm. After 2 years, osteointegration was present in 73% and instability in 24% which was not related to the position of the stem. At the end of the follow up period, 20% of the stems showing osteointegration had changed and become unstable.
Munuera
L
L
Department of Orthopaedics, Hospital La Paz, Universidad Autónoma de Madrid, Spain.
Garcia-Cimbrelo
E
E
Cordero
J
J
D000328:Adult; D000368:Aged; D001843:Bone Cements; D015519:Bone Density; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016348:Osseointegration; D016062:Porosity; D011379:Prognosis; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
D001843:Bone Cements