Traumatic ruptures of the diaphragm (TRD) are serious lesions that are often part of polytrauma. The diagnosis of wounds and diaphragmatic rupture remains difficult and often delayed. Methods: We conducted a descriptive observational study with retrospective data collection. It took place in two referral hospitals in Algeria. Results: Our study involved 19 cases of diaphragmatic injuries. The sex-ratio was 8.5. The mean age was 29 years. Traffic accident represented 78.95%. The diaphragmatic rupture was on the left side in 84.21 % (16 cases). The surgical procedure involved a reduction of herniated viscera and a suture of the diaphragm by “X” non absorbable points in 73.68 % (15 cases). The evolution was favorable in all patients, except one death. Conclusion: A diaphragmatic rupture is often integrated into a polytrauma, of which it is a criterion of Severity; however the diagnosis may be overlooked in the acute phase because it poses a real diagnostic and therapeutic challenge.