Cost of Headless vs Headed Screw Fixation for Calcaneal Osteotomy and Subtalar Arthrodesis

Abstract

Background: Screw head prominence in the heel following fixation for calcaneal osteotomy or subtalar arthrodesis has resulted in high rates of symptomatic hardware and screw removal. A cost analysis was performed to determine the financial implications of screw removal. Furthermore, we compared the rate of nonunion following fixation. Methods: Current Procedural Terminology codes were used to identify all patients who had a subtalar arthrodesis or calcaneal osteotomy (with screw fixation) performed between 2010 and 2016. The cohort was divided into 2 groups: 7.0-mm headless screw or 6.7-mm headed screw. The primary outcome measure was the rate of symptomatic screw removal. Secondary outcomes included the rate of nonunion. The expense associated with symptomatic hardware removal was determined by cost analysis. Results: Seventy-six patients underwent headless screw fixation, and 2 patients (2.6%) required screw removal. Fifty-four patients underwent headed screw fixation and 12 patients (22.2%) required screw removal. Symptomatic hardware removal was performed more frequently in the headed screw group ( P < .001). There was no difference in the rate of nonunion after subtalar arthrodesis between the 2 groups ( P = .363). The calcaneal osteotomy united in 100% of patients. There was a $51 755 cost savings per 100 cases using headless screw fixation. Conclusion: The rate of symptomatic screw removal was lower with headless screw fixation. The calcaneal osteotomy healed in 100% of patients, and there was no difference in the rate of subtalar nonunion between the 2 groups. Cost analysis demonstrated a significant benefit when the expense of hardware removal was considered. Level of Evidence: Level III, retrospective cohort study.

Response to “Letter Regarding: Cost of Headless vs Headed Screw Fixation for Calcaneal Osteotomy and Subtalar Arthrodesis”

“…We would like to thank you for the opportunity to respond to the questions raised about our recent article "Cost of Headless vs Headed Screw Fixation for Calcaneal Osteotomy and Subtalar Arthrodesis." 1 We would also like to thank those who took an interest in our article and for taking the time to express their concerns.…”

Letter Regarding: Cost of Headless vs Headed Screw Fixation for Calcaneal Osteotomy and Subtalar Arthrodesis

“…I congratulate the team of Dr Boren and colleagues on publication of their study “Cost of Headless vs Headed Screw Fixation for Calcaneal Osteotomy and Subtalar Arthrodesis,” published in Foot & Ankle Orthopaedics , volume 6(1). 1 Their work presents an interesting analysis of costs associated with hardware removal in calcaneal osteotomy and subtalar arthrodesis cases. The clinical literature is lacking on cost analyses, which assess extended patient care, including revisions and removals, and this work adds much-needed data in that area.…”