بررسی ضرورت رادیوگرافی در دررفتگی قدامی مفصل شانه

Background and Purpose: Anterior shoulder dislocation is the most common major joint dislocation. In most cases, this dislocation is being relocated in emergency departments. Routinely, pre and post reduction radiographs are performed. This study was done to determine the necessity of radiographs in the emergency department for management of patients with suspected anterior shoulder dislocation. Materials and Methods: In this case series study, 116 patients suspected of anterior shoulder dislocation were referred to Hazrat Rasoul Akram and Haftome Tir Hospitals emergency departments in Tehran, and were investigated for a one year period. The emergency physicians evaluated and documented the possibility of dislocation or relocation, before obtaining radiographs. Outcome measures were the assessment of joint positions on the x-rays by an orthopedic surgeon. Results: 84 cases (72%) were male and 32 cases (28%) were female. Mean age of the patients was 31.5±8.5 yrs. Thirty (30) patients had recurrent dislocations without traumatic mechanism (group 1) and eighty six (86) patients had no prior dislocation or a blunt mechanism of injury (group 2). The accuracy of the emergency physician’s assessment in dislocations was 100% in group 1 and 98% in group 2. False assessments occurred only in patients with fractures. There is no significant difference between emergency physicians and orthopedic surgeons in the assessment of dislocations and relocations, when the emergency physicians did accuralty diagnose them. Conclusion: Our study showed that the physicians are highly accurate in clinical determination of anterior shoulder dislocation and relocation. Pre-reduction films should be obtained when the mechanism of injury is trauma. Post-reduction films should be obtained in fracture-dislocations or when the physicians are uncertain of correct relocation.