The aim of this study was to evaluate the long-term outcomes of patients who had sustained an unstable ankle fracture with a posterior malleolus fracture (PMF) and without (N-PMF). Adult patients presenting to a single academic trauma centre in Edinburgh, UK, between 2009 and 2012 with an unstable ankle fracture requiring surgery were identified. The primary outcome measure was the Olerud Molander Ankle Score (OMAS). Secondary measures included Euroqol-5D-3L Index (Eq5D3L), Euroqol-5D-VAS and Manchester Oxford Foot Questionnaire (MOXFQ). There were 304 patients in the study cohort. The mean age was 49.6 years (16.3–78.3) and 33% (n=100) male and 67% (n=204) female. Of these, 67% (n=204) had a PMF and 33% did not (n=100). No patient received a computed tomography (CT) scan pre-operatively. Only 10% of PMFs (22/204) were managed with internal fixation. At a mean of 13.8 years (11.3 – 15.3) the median OMAS score was 85 (Interquartile Range 60 – 100). There was no difference in OMAS between the N-PMF and PMF groups (85 [56.25 – 100] vs 85 [61.25 – 100]; p = 0.580). There was also no difference for MOXFQ (N-PMF 7 [0 – 36.75] vs PMF 8 [0–38.75]; p = 0.643), the EQ5D Index (N-PMF 0.8 [0.7 – 1] vs PMF 0.8 [0.7 – 1]; p = 0.720) and EQ5D VAS (N-PMF 80 [70 – 90] vs PMF 80 [60 – 90]; p = 0.224). The presence of a PMF does not affect the long-term patient reported outcomes in patients with a surgically managed unstable ankle fracture

Background. Tightrope fixation has been suggested as an alternative to screw stabilisation for distal tibiofibular joint diastasis that provides stability but avoids the problems of rigid screws across the joint. Recent case series (of 6 and 16 patients) have however, reported soft tissue problems and infections in 19–33% of patients. This study aims to review treatment and complications of distal tibiofibular diastasis fixation in our unit with the use of Tightrope or diastasis screws. Methods. Retrospective review of all patients undergoing primary ankle fixation between May 2008 and October 2009. Exclusions included revision procedures, or ankle fixation prior to the current fracture. Those undergoing Tightrope or diastasis screw fixation were studied for any complications or further procedures. Clinical records and XRAYs were reviewed, family practitioners of the patients were contacted and any consultations for ankle related problems noted. Results. 187 primary ankle fixation procedures were performed. 35 ankles required stabilisation of the distal tibiofibular joint. In 12, this was achieved using the Tightrope and in 23, syndesmotic screws were used. There was no difference in the adequacy of reduction in the two groups. Of those stabilised with a Tightrope, 6 were Maisonneuve injuries, 5 Weber C and 1 Weber B. 1 was lost to followup. Of the remaining 11, none had complications attributable to the method of fixation documented in hospital or family practitioner records. One had a small stitch abscess that settled on removal of the suture material. None underwent subsequent procedures. Of 23 stabilised with screws, 4 were Weber B, 14 Weber C, 4 Maisonneuve and 1 syndesmotic injury associated with an isolated posterior malleolus fracture. In this group of patients with primary ankle fixation involving a diastasis screw there was 1 deep infection requiring removal of metalwork, 1 superficial wound infection after syndesmotic screw removal and 1 wound breakdown after syndesmotic screw removal. A patient developed superficial peroneal nerve palsy at operation and 1 syndesmotic fixation failed and underwent revision surgery. This patient subsequently developed infection and had revision to a hindfoot nail. 19 patients underwent screw removal. The 23 patients underwent 45 procedures (mean 1.96 procedures per patient). Conclusion. In a consecutive series of 187 ankle procedures, 12 had the distal tibiofibular joint stabilised with a Tightrope with no noted complications attributable to the implant and no additional procedures. 23 patients underwent diastasis screw fixation with 19 screw removal procedures and 5 complications of various severity, 2 of which were attributable to screw removal. Tightrope fixation has provided stable fixation of the injured syndesmosis in our unit and we have not to date encountered complications previously described in the literature