ArticleCureus2022
A Retrospective Study: Is Low-Intensity Pulsed Ultrasound (LIPUS) an Effective Alternate Treatment Option for Non-union?
Article in Cureus, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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Abstract
Background There is ongoing controversy regarding the use of low-intensity pulsed ultrasound (LIPUS) therapy in patients with delayed union or non-union. Exogen (Bioventus, Durham, NC) is a well-known brand of LIPUS, and according to their data, 86% of non-union fractures will heal without the need for surgery. A few independent retrospective studies reported much lower healing rates. Method A retrospective observational study was performed assessing all the patients who underwent Exogen therapy in a single centre. All patients who were initiated on Exogen after three months with radiographic signs of the delayed union were included in the study. Routine follow-up appointments were organised until clinical and radiological healing could be confirmed. Daily 20-minute Exogen sessions were continued until the fracture was healed or up to a maximum of four months as recommended by the manufacturer. Results A total of 37 patients received Exogen therapy from 2012 to 2021, of which only 28 patients met our inclusion criteria and were subsequently analysed. The mean age of the patients was 52.0 (SD ± 20.2) with a male to female ratio of 1.7:1. The average time to healing was 115 (±51.2) days with a success rate of 82.14%. The average interfragmentary gap was 7.5 mm (±5.8) for the fractures that healed whereas the failed treatment was 16.1 mm (±13.8). There was no obvious association between outcomes after Exogen therapy and the patient's age, sex, time to initiate Exogen, diabetes, and smoking status. Conclusion This study demonstrated a high success rate of LIPUS therapy for patients with delayed union and non-union. LIPUS represents a safe, non-invasive alternative to revision surgery. An independent risk factor for a potentially poor outcome is an increased interfragmentary gap.
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