[Spontaneous uni- and bilateral Achilles tendon rupture--a frequent complication after kidney transplantation].

In our clinic we observed uni- or bilateral ruptures of the Achilles tendon as a complication in 5% of all renal transplant patients. The majority of ruptures took place within the first two months following transplantation in a phase of increasing physical activity. Besides steroid treatment, elevated uric acid and hyperparathyroidism, advanced age at the time of transplantation as well as long duration of chronic hemodialysis must be considered as risk factors.