Forty Lisfranc's joint injuries from 1992 to 1996 were retrospectively reviewed. These injuries included 18 sprains, acute fracture/dislocations, 11 cases of post-traumatic degenerative joint disease, and 7 fusions. The patients included 28 femails and 12 males of average age 36.2 years. Patients were evaluated for their ability to return to activiites and function. The American Orthopedic Foot and Ankle Society Midfoot Rating Scale was used for fusion patients, yielding an average score of 86.4/100, and 71% good to excellent results. Patients with sprains took an average of 3.5 months to return to normal activities (ranging from 1 month with grade 1 injuries to 6 montsh with some grade 3 injuries). Those with fracture/dislocations took 4.75 months to return to activities with no additional degenerative changes developing on follow-up evaluation after an average of 24 months. Patients who presented with post-traumatic pain often were undertreated initially and, owing to continued symptoms, were generally unable to maintain their desired activity level. An algorithm was created to aid in treateing future patients. The result obtained were similar to those of other studies on trauma to Lisfranc's joint.