Percutaneous vs Open Zadek Osteotomy for Treatment of Insertional Achilles Tendinopathy and Haglund's Deformity: A Systematic Review

Yianni Bakaes; SarahRose Hall; J Benjamin Jackson 3rd; A Holly Johnson; Oliver N Schipper; Ettore Vulcano; Jonathan R M Kaplan; Tyler A Gonzalez

doi:10.1177/24730114241241320

Percutaneous vs Open Zadek Osteotomy for Treatment of Insertional Achilles Tendinopathy and Haglund's Deformity: A Systematic Review

Foot Ankle Orthop. 2024 Apr 12;9(2):24730114241241320. doi: 10.1177/24730114241241320. eCollection 2024 Apr.

Authors

Yianni Bakaes¹, SarahRose Hall¹, J Benjamin Jackson 3rd^{1

2}, A Holly Johnson³, Oliver N Schipper⁴, Ettore Vulcano⁵, Jonathan R M Kaplan⁶, Tyler A Gonzalez^{1

2}

Affiliations

¹ School of Medicine, University of South Carolina, Columbia, SC, USA.
² Prisma Health Orthopedics, Lexington, SC, USA.
³ Hospital for Special Surgery, New York, NY, USA.
⁴ Anderson Orthopaedic Clinic, Arlington, VA, USA.
⁵ Columbia University Division of Orthopedics at Mount Sinai Medical Center, Miami Beach, FL, USA.
⁶ Duke Orthopaedic Surgery, Morrisville, NC, USA.

Abstract

Background: Percutaneous Zadek osteotomy (ZO) has emerged as a surgical treatment of insertional Achilles tendinopathy (IAT) over the last decade. Existing literature is limited regarding the comparison of this approach with the more established, open ZO technique. This systematic review aims to evaluate and compare the current data on open vs percutaneous ZO approaches to help set evidence-based guidelines.

Methods: A systematic literature search was performed using the keywords (Zadek osteotomy) OR (Keck and Kelly osteotomy) OR (dorsal closing wedge calcaneal osteotomy) OR (Haglund Deformity) OR (Haglund Syndrome) OR (Insertional Achilles Tendinopathy) and MeSH terms Osteotomy, Calcaneus, Syndrome, Insertional, Achilles tendon, and Tendinopathy. Our search included the following databases: PubMed, Embase, and the Cochrane Library. The PRISMA protocol and the Cochrane Handbook guidelines were followed. All studies included were published from 2009 to 2024 and included the use of open or percutaneous approaches of ZO for the treatment of IAT with at least a 12-month follow-up. The MINORS score criteria were used to evaluate the strength and quality of studies.

Results: A total of 17 studies were reviewed, including 611 subjects and 625 ZO procedures. Of these procedures, 81 (11%) subjects had a percutaneous and 544 (89%) subjects had an open ZO. The mean follow-up time was 16.1 months for patients treated with percutaneous ZO and 36.1 months for patients treated with open ZO. Both open and percutaneous studies included in this review showed postoperative improvements in AOFAS, FFI, VISA-A, and VAS scores in patients with IAT. The reported complication rate was 5.8% among patients treated with percutaneous ZO and 10.2% among patients treated with open ZO.

Conclusion: Percutaneous ZO is an emerging approach with substantially fewer documented cases compared with the open ZO. Both percutaneous and open ZO appear to be relatively effective treatments for insertional Achilles tendinopathy with Haglund's deformity. The lower complication rates reported for percutaneous ZO is encouraging. Further investigation with more subjects undergoing percutaneous ZO is clearly needed.

Keywords: Haglund’s deformity; MIS; Zadek osteotomy; insertional Achilles tendinopathy; minimally invasive surgery; percutaneous; systematic review.