Abstract: Implantable surgical articles are provided which are at least partially bioresorbable and which consist at least partially of a copolyester of succinic acid and oxalic acid possessing receiving units of the general formulae: ##STR1## in which each R radical in the chain, which may be identical or different, represents a linear or branched alkylene radical possessing 2 to 6 carbon atoms, at least 2 of which carbon atoms form part of the polymer chain, a cyclo-alkylene radical possessing 5 to 8 carbon atoms, or a radical of the general formula: ##STR2## in which each of R.sub.1 and R.sub.2, which may be identical or different, represents a methylene or ethylene radical. They are particularly suitable as sutures.