Minimally Invasive Treatment of Inversion Shortening Calcaneal Fractures in the “Out-In” Position

Xu-Song Li, Lin Ye, Jun-Le Wu, Li-Ben Huang, Jie-Feng Huang

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Orthopaedic Surgery ›› 2024, Vol. 16 ›› Issue (1) : 263-268. DOI: 10.1111/os.13867
OPERATIVE TECHNIQUE

Minimally Invasive Treatment of Inversion Shortening Calcaneal Fractures in the “Out-In” Position

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Abstract

Objective:: Heel fractures need extensive surgical incisions and are challenging to successfully reposition using traditional prying. The goal of this study is to evaluate the clinical effectiveness of using a Kirschner pin-guided distractor to treat inversion shortening calcaneal fractures in the “out-in” position.

Methods:: A total of 40 data from 37 patients with inversion shortened calcaneal fractures from January 2018 to March 2020 were reviewed. Preoperative lateral and axial X-rays and 3D CT were taken to assess the fracture type, and minimally invasive internal fixation was performed in the “out-in” position with distractor repositioning, and intraoperative and postoperative images were taken to assess fracture repositioning and fixation. During the follow-up period, the postoperative functional recovery status was assessed using the VAS score, AOFAS score, and FAOS score. Paired-samples t-test was used for all data comparisons.

Results:: All cases received a mean follow-up of 28.49 ± 3.25 months, and the mean fracture healing time was 7.84 ± 0.71 weeks. The postoperative images showed well-fixed fracture repositioning, and calcaneal height, length, width, and inversion angles were significantly improved. At the final follow-up, the calcaneal height, length, and width recovered from 39.35 ± 4.44mm, 79.35 ± 2.7mm, and 45.75 ± 2.87mm preoperatively to 50.93 ± 3.18mm, 82.23 ± 1.90mm, and 39.67 ± 1.58mm postoperatively (p < 0.001; p < 0.001; p < 0.001). The calcaneus inversion angle restored from 7.73° ± 2.26° to 3.80° ± 1.80° (p < 0.001). Böhler's angle and Gissane's angle improved from 13.13° ± 3.02° and 105.15° ± 8.94° to 27.95° ± 3.41° and 122.85° ± 5.54° (p < 0.001; p < 0.001). No non-healing fractures, osteomyelitis, or traumatic arthritis were observed.

Conclusion:: Minimally invasive internal fixation with distractor repositioning in the “out-in” position is effective in the treatment of inversion shortening calcaneal fractures while restoring the anatomy and protecting the soft tissue.

Keywords

“Out-In” Position / Calcaneal Fractures / Distractor / Minimal Invasive

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Xu-Song Li, Lin Ye, Jun-Le Wu, Li-Ben Huang, Jie-Feng Huang. Minimally Invasive Treatment of Inversion Shortening Calcaneal Fractures in the “Out-In” Position. Orthopaedic Surgery, 2024, 16(1): 263‒268 https://doi.org/10.1111/os.13867

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