In this era of subspecialty care in orthopedics, iterations of implant design can occur in a silo which then precludes gaining knowledge from failures of implant design that may have occurred in different subspecialties. This literature review describes the history of failures in hip and shoulder arthroplasties with the purpose of identifying similar factors that led to previous implant failures. A review of the literature was performed by two reviewers assessing articles that described failed hip and shoulder arthroplasty systems over time. We identified and analyzed 53 implant failures—23 in hip arthroplasty and 30 in shoulder arthroplasty. These failures were categorized as material, mechanical, and technical. In hip arthroplasty, 48% were material, 39% mechanical, and 13% technical failures. In shoulder arthroplasty, the distribution was 10% material, 70% mechanical, and 20% technical failures. The distribution of these failures highlights similar and sometimes repeated failure mechanisms between subspecialties. This accentuates the importance of a collaborative approach to improve future arthroplasty designs.

Objective: The objective of this study is to assess the accuracy of two intraoperative radiographic markers, corner congruency (CC), and tibiotalar symmetry (TTS), in determining anatomic reduction of the syndesmosis. Methods: Eight cadaveric specimens were used. Each specimen underwent baseline imaging with C-arm fluoroscopy to confirm native presence of the CC and TTS radiographic markers and with axial CT to assess the native syndesmosis reduction. Unstable syndesmotic injuries were simulated through complete sectioning of the syndesmosis; malreductions were then performed, confirmed on CT, and CC and TTS markers were recorded. Open syndesmotic reductions were then performed and confirmed with CT, and the presence or absence of anatomically aligned CC and TTS radiographic markers were again recorded. All measurements were done independently by three reviewers. Results: CT measurements demonstrated intercorrelation coefficient values of >0.8, indicating excellent interobserver reliability. Anatomically aligned CC and TTS radiographic markers were present in all specimens at baseline. Fluoroscopic images obtained after malreductions demonstrated the presence of an anatomically aligned CC radiographic marker in 3/8 specimens, presence of TTS marker in 2/8 specimens, and anatomic malalignment of both markers in 3/8 specimens. None of the malreduced specimens demonstrated the concomitant presence of intact CC and TTS radiographic markers. After open reduction of the syndesmosis, all specimens demonstrated restoration of both the CC and TTS radiographic markers. Independently, CC as a marker of syndesmotic reduction was found to have a sensitivity of 62.5% and a specificity of 100%, whereas TTS as an independent marker of syndesmotic reduction was found to have a sensitivity of 75% and a specificity of 100%. In combination, the presence of both CC and TTS radiographic markers were found to have 100% sensitivity and specificity. Conclusion: In combination, intact CC and TTS radiographic markers are reliable predictors of anatomic reduction of the syndesmosis.