We evaluated forty-eight patients (fifty knees) with pes anserinus
transfer at an average of nine years after operation. There was a high
incidence of anteromedial and anterolateral rotatory instability. The
incidence (54 per cent) of significant roentgenographic changes at
follow-up was also high. Although many patients were improved
symptomatically after pes anserinus transfer, only nineteen patients (38
per cent) had no limitation of function.