This was a prospective study on 1991 female tubal sterilisations perfo
rmed in government and non-government clinics in Thika, Kenya, between
January 1985 and December 1988. There were 10 sterilisation failures,
giving a crude failure rate of 0.5%, 0.4% in the first year. Fifty pe
rcent appeared to be luteal phase pregnancies, twenty percent had prev
ious ectopic pregnancies and the ectopic site turned out to be patent.
The failure rate for post-partum tubal ligation was 0.2%, and 0.3% fo
r tubal ligation concomitant with caesarian section. The failure rate
for Laparascopic fallope ring tubal ligation was 3.6% but the denomina
tor was small. A client profile is presented. It is recommended that e
ven in clients with previous ectopic pregnancy tubal ligation should b
e, if possible, bilateral.