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Deap-seated infection and nonunion following internal fixation for Charcot foot deformity correction. A proportional meta-analysis of level 4 evidence.
Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association 2024 March 28
BACKGROUND: Given the paucity of literature on the management of infected metalwork and nonunion in neuropathic diabetic patients, a meta-analysis was designed to investigate the two major complications following Charcot reconstruction performed by means of internal fixation methods.
METHODS: We searched PubMed, Scopus and CENTRAL until the 17th of May 2022 for completed studies investigating outcomes following midfoot and/or hindfoot and/or ankle diabetic Charcot reconstruction. For a paper to qualify for inclusion, an internal fixation element should have been considered. Random effects meta-analysis of proportion was performed to calculate the rate of post-operative deep-seated infections with the associated amputation rate and nonunions by using Open Meta-analyst software. Sub-analysis linked to anatomical location of reconstruction was performed and the quality of the included studies was appraised using the Moga tool.
RESULTS: Thirty studies with 492 eligible reconstructions were considered. Of those, deep-seated infections were diagnosed in 46 cases (Estimated proportion was 6.7%, 95% CI [4.2%-9.2%]). Debridement and antibiotic administration with or without metalwork removal were considered in the majority of the participants with successful clinical outcomes. Amputation was performed in 15 patients due to unmanageable post-operative infection and nonunion was reported in 17 studies (Estimated rates were 36.6%, 95% CI [18.4%-56.3%]; and 11.9%, 95%CI [6.6%-18.1%]; respectively).
CONCLUSIONS: Meta-analysis showed that although the overall risk of infection development is less than 10%, just below one third of the infected cases undergo late amputation. Moreover, internal fixation reconstructions carry a nonunion risk of just above 10%.
METHODS: We searched PubMed, Scopus and CENTRAL until the 17th of May 2022 for completed studies investigating outcomes following midfoot and/or hindfoot and/or ankle diabetic Charcot reconstruction. For a paper to qualify for inclusion, an internal fixation element should have been considered. Random effects meta-analysis of proportion was performed to calculate the rate of post-operative deep-seated infections with the associated amputation rate and nonunions by using Open Meta-analyst software. Sub-analysis linked to anatomical location of reconstruction was performed and the quality of the included studies was appraised using the Moga tool.
RESULTS: Thirty studies with 492 eligible reconstructions were considered. Of those, deep-seated infections were diagnosed in 46 cases (Estimated proportion was 6.7%, 95% CI [4.2%-9.2%]). Debridement and antibiotic administration with or without metalwork removal were considered in the majority of the participants with successful clinical outcomes. Amputation was performed in 15 patients due to unmanageable post-operative infection and nonunion was reported in 17 studies (Estimated rates were 36.6%, 95% CI [18.4%-56.3%]; and 11.9%, 95%CI [6.6%-18.1%]; respectively).
CONCLUSIONS: Meta-analysis showed that although the overall risk of infection development is less than 10%, just below one third of the infected cases undergo late amputation. Moreover, internal fixation reconstructions carry a nonunion risk of just above 10%.
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