O. Robertsson et al., The routine of surgical management reduces failure after unicompartmental knee arthroplasty, J BONE-BR V, 83B(1), 2001, pp. 45-49
Citations number
15
Categorie Soggetti
Ortopedics, Rehabilitation & Sport Medicine","da verificare
A total of 10 474 unicompartmental knee arthroplasties was performed for me
dial osteoarthritis in Sweden between 1986 and 1995. We sought to establish
whether the number of operations performed in an orthopaedic unit affected
the incidence of revision. Three different implants were analysed: one wit
h a high revision rate, known to have unfavourable mechanical and design pr
operties; a prosthesis which is technically demanding with a known increase
d rate of revision; and the most commonly used unicompartmental device.
Most of the units performed relatively few unicompartmental knee arthroplas
ties per year and there was an association between the mean number carried
out and the risk of later revision. The effect of the mean number of operat
ions per year on the risk of revision varied, The technically demanding imp
lant was most affected, that most commonly used less so, and the outcome of
the unfavourable design was not influenced by the number of operations per
formed.
For unicompartmental arthroplasty, the long-term results are related to the
number performed by the unit, probably expressing the standards of managem
ent in selecting the patients and performing the operation.