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. 2024 Dec 1;106-B(12):1443-1450.
doi: 10.1302/0301-620X.106B12.BJJ-2024-0219.R1.

Single-stage orthoplastic treatment of complex calcaneal osteomyelitis with large soft-tissue defects

Billy Down  1 , Jamie Ferguson  1 , Constantinos Loizou  1 , Martin McNally  1 , Alex Ramsden  1 , David Stubbs  1 , Adrian Kendal  1   2
Affiliations

Single-stage orthoplastic treatment of complex calcaneal osteomyelitis with large soft-tissue defects

Billy Down et al. Bone Joint J. .

Abstract

Aims: Calcaneal osteomyelitis remains a difficult condition to treat with high rates of recurrence and below-knee amputation, particularly in the presence of severe soft-tissue destruction. This study assesses the outcomes of single-stage orthoplastic surgical treatment of calcaneal osteomyelitis with large soft-tissue defects.

Methods: A retrospective review was performed of all patients who underwent combined single-stage orthoplastic treatment of calcaneal osteomyelitis (01/2008 to 12/2022). Primary outcome measures were osteomyelitis recurrence and below-knee amputation (BKA). Secondary outcome measures included flap failure, operating time, complications, and length of stay.

Results: A total of 30 patients (14 female, 16 male; mean age 53.7 years (95% CI 48.0 to 59.5)) underwent combined orthoplastic surgical treatment for BACH "complex" calcaneal osteomyelitis with a median follow-up of 31 months (IQR 11.75 to 49.25). Of these, 19 received a local flap and 11 received a free flap. The most common causes were fracture-related infection (n = 12; 40%) and ulceration (n = 10; 33%); 21 patients (70%) had already undergone at least one operation elsewhere. Osteomyelitis was eradicated in 23 patients (77%). There were seven patients who developed recurrent osteomyelitis (23%), all in the local flap group. One patient required a BKA. Univariate analysis revealed that local flap reconstruction (OR 13.5 (95% CI 0.7 to 269.7); p = 0.029) and peripheral vascular disease (OR 16.5 (95% CI 1.35 to 203.1); p = 0.008) were associated with increased risk of recurrence. Free flap reconstruction took significantly longer intraoperatively than local flaps (mean 481 minutes (408 to 554) vs mean 168 minutes (119 to 216); p < 0.001), but without significant differences in length of stay or frequency of outpatient appointments.

Conclusion: In our study involving 30 patients, single-stage orthoplastic management was associated with 77% (n = 23) eradication of infection and only one amputation in this complex and comorbid patient group. Risk factors for failure were peripheral vascular disease and local flap reconstruction. While good outcomes can be achieved, this treatment requires high levels of inpatient and outpatient care.

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Conflict of interest statement

J. Ferguson reports payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from BoneSupport, Smith & Nephew, and Johnson & Johnson, unrelated to this study. M. McNally reports payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events and support for attending meetings and/or travel from BoneSupport, unrelated to this study. A. Ramsden reports payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from BoneSupport, unrelated to this study.

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