Traditional African circumcision procedures performed in the bush do not always remove the foreskin completely.
Among other possible medical problems that may arise the protection against infections such HIV is not as good as if the patient had a full circumcision.
Of course using a condom is a far better protection against HIV -- just because you are cut it does not mean it is safe to have sex with HIV positive partners.
Circumcision: A case of all or nothing?
Some other sources also claim that e.g. traditional Xhosa circumcision sometimes leaves more loose skin than some people with a naturally short foreskin have.
The article above states the figure as 27% of the traditionally circumcised Xhosa men who have part of their foreskin remaining, thus the traditional technique can create a fully circumcised result. The majority of men circumcised the traditional way have a medically adequate circumcision. But some end up with results that look like a partial circumcision which does not have the same medical benefits.
Everything may depend on the skill and care of the practitioner performing the procedure.
