Incidence of Intraoperative Cardiothoracic Intervention During Open Surgery Following Acute Posterior Sternoclavicular Joint Injury: A Case Series and Review of the Literature.

Background: Acute posterior sternoclavicular joint injuries are rare but potentially lethal injuries-signs of mediastinal compression range from nonspecific to neurovascular compromise. Currently, orthopaedic experts recommend a cardiothoracic surgeon be placed on standby during open surgery for potential intraoperative complications. However, few studies have reported on how often cardiothoracic intervention is required.

Methods: First, we identified patients in our institution by CPT codes 23530, 23525, and 23532 from January 1, 2002 to May 1, 2023. Demographic variables and intraoperative cardiothoracic intervention rates were collected. Second, we systematically reviewed the literature to identify articles on acute posterior sternoclavicular injury using PubMed, Embase, and CINAHL databases (through August 20, 2023). Exclusion criteria included conservative treatment, successful closed reduction, chronic injury (>6 wk) cadaver studies, reviews, and nonavailable text.

Results: Thirteen local patients underwent open surgery for an acute posterior sternoclavicular joint injury, 11 males and 2 females with an average age of 18.2 years old (range: 15 to 32.4). The most common mechanism of injury was sports (n=9; 69.2%). Four (30.8%) patients had physical or radiographic evidence of mediastinal compression. No patients required intraoperative cardiothoracic intervention in our institution. The literature search yielded 132 articles and 512 open surgeries for acute posterior sternoclavicular joint injuries. Four patients required intraoperative cardiothoracic intervention, all of whom presented with polytrauma and/or clinical or radiographic signs of neurovascular compromise, giving a combined overall rate of 0.76%.

Conclusions: Expert opinion commonly recommends cardiothoracic backup during open surgery for acute posterior sternoclavicular joint injuries. On the basis of our local data and systematic literature review, we found an overall cardiothoracic intervention rate of 0.76%. In the presence of polytrauma and/or findings of neurovascular compromise, we suggest having cardiothoracic surgery on close standby during the procedure. However, a patient with an isolated acute posterior sternoclavicular joint injury and no clinical or radiographic findings of neurovascular compromise does not appear to require a cardiothoracic surgeon on standby. Ultimately, the decision to involve cardiothoracic backup during open surgery for an acute posterior sternoclavicular injury should be made on a case-by-case basis after a thorough physical and radiographic evaluation of the patient.

Level of evidence: Level III.