Low viscosity biodegradable polymer solutions of a liquid biodegradablepolymer and biocompatible solvent and methods using the compositions to forma biodegradable liquid polymer implant are provided. Liquid biodegradablepolymers are dissolved in non-toxic biocompatible organic solvents to form lowviscosity solutions that can be easily injected into the body with standardsyringes and small gauge needles. Once the liquid polymer solution is placedwithin the body, the solvent dissipates or diffuses away from the polymerleavinga more viscous liquid polymer implant suitable, for example, for delivery of abiologically active agent or for use as a medical or surgical device. Becausethepolymer composition is a low viscosity liquid, it can be injected into muscleorsubcutaneous tissue without damage to the surrounding tissue and without thenoticeable bump observed with solid implant.
