Fractures of the lateral malleolus AO-44B1 – An evaluation study of treatment after the implementation of a structured treatment algorithm at Sahlgrenska University Hospital
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Introduction The lateral malleolar fracture classified as AO-44B1 (B1-fracture) is still difficult to assess regarding ankle-fracture stability and deciding subsequent correct treatment and follow-up procedure. With a structured treatment algorithm for ankle fractures (PM) being introduced at Sahlgrenska University Hospital/Mölndal (SU/M) in September 2017, the ambition has been to sharpen diagnostics and simplify assessment of ankle fractures, including B1-fractures. Aim The aim of this report was to study the adherence to PM-guidelines when it comes to the management of B1-fractures at SU/M and furthermore elucidate if the PM has had an effect over time. Further aim has been to study the PM´s effect on selected parts of Patient Reported Outcome Measures (PROMs) relevant to ankle function and in relation to B1-fracture treatment. Methods Two independent patient groups with B1-fractures were studied, one group having been treated before the introduction of the PM, and the other after. Data was extracted from the Swedish Fracture Register (SFR) with additional review of medical records and radiographs. Descriptive and statistical analyzing was conducted. Results Non-surgically treated patients with B1-fractures had significantly increased (pre-PM: 70%; post-PM: 90%) since the introduction of the PM (p < 0.001) and received more degree of full weight bearing advice following treatment (p < 0.001). Surgically treated patients had a significant decrease in inpatient care days (pre-PM: median 2; post-PM: median 0) (p <20.001), immobilization time (pre-PM: median 45 days; post-PM: median 42 days) (p < 0.001) and were given less restriction on weight bearing following treatment (p < 0.001). Documentation of medial tenderness has descriptively increased. Analyses of selected parts of SMFA for non-surgically and surgically treated B1-fractures showed no significant decrease in dysfunction or bother from the ankle since the introduction of the PM. Conclusion There is a compliance to the PM, but room for improvement exists. The PM has yet to have an effect on PROMs.