ABSTRACT
BACKGROUND: Hindfoot and ankle fusions are mechanically limiting procedures for patients. However, patient-reported outcomes of these procedures have not been well studied. This study assessed outcomes of hindfoot and ankle fusions by using Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) and Pain Interference (PI) Computer Adaptive Tests (CATs). METHODS: Between 2014 and 2018, 102 patients were prospectively enrolled after presenting to a tertiary care facility for ankle and hindfoot fusions, including tibiotalar, tibiotalocalcaneal, subtalar, and triple arthrodeses. Study participants completed preoperative and 12-month postoperative PF and PI CATs. The differences between mean 12-month postoperative and preoperative PROMIS PF and PI T scores were analyzed with paired t tests. The relationship between the 12-month PF and PI differences for the overall sample and patient factors was examined using multiple regression modeling. RESULTS: The sample had mean age of 57.69 years; 48% were male, and 55% were obese. Patients who underwent ankle and hindfoot arthrodesis had statistically significant improvements from preoperative to 12 months postoperative in mean PF (36.26±7.85 vs 39.38±6.46, P = .03) and PI (61.07±7.75 vs 56.62±9.81, P = .02). Triple arthrodesis saw the greatest increases in physical function (âµPF = 7.22±7.31, P = .01) and reductions in pain (âµPI = -9.17±8.31, P = .01), achieving minimal clinically important difference (MCID). Patients who underwent tibiotalar fusion had significant improvement in physical function (âµPF = 4.18±5.68, P = .04) and pain reduction that approached statistical significance (âµPI = -6.24±8.50, P = .09), achieving MCID. Older age (≥60 years ) was associated with greater improvements in PF (ß = 0.20, P = .07) and PI (ß = -0.29, P = .04). Preoperative PF and PI T scores were significantly associated with the 12-month change in PF and PI T scores, respectively (ß = -0.74, P < .01; ß = -0.61, P < .01). CONCLUSION: Hindfoot and ankle fusions are procedures with favorable patient outcomes leading to increased physical function and decreased pain at 12 months postoperation relative to preoperation. LEVEL OF EVIDENCE: Level II, prospective comparative study.
ABSTRACT
BACKGROUND: Ankle fractures are a common cause of morbidity that have increased in incidence over the past decade. The purpose of this study was to compare the outcomes and prognosis of various fracture subtypes by using 2 validated patient-reported outcome measures: the Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function (PF) and Pain Interference (PI) Computer Adaptive Tests (CATs). METHODS: Twelve-month postoperative PF and PI CATs were collected for 126 ankle fracture patients presenting between 2014 and 2017. Patients were stratified by ankle fracture subtype and refined by the presence/absence of concomitant deltoid injury or posterior malleolar fracture. Patients defined as members of vulnerable populations and patients presenting more than 2 weeks from time of injury or with prior acute ipsilateral fracture were excluded. The distribution of PF and PI T scores were assessed via a Shapiro-Wilk test and a 1-way analysis of variance. If significant differences were found between groups, pairwise comparisons were tested via Dwass, Steel, and Critchlow-Fligner multiple comparison analysis. RESULTS: Mean values for the PROMIS PF and PI for each fracture subtype were calculated and compared to reference population mean (SD) T scores of 50 (10): isolated lateral malleolar (PF: 50/PI: 51), isolated medial malleolar (PF: 52/PI: 49), bimalleolar (PF: 48/PI: 50), trimalleoar (PF: 47/PI: 51), isolated posterior malleolar (PF: 53/PI: 44), and isolated syndesmotic injury (PF: 60/PI: 46). Shapiro-Wilk test indicated a nonnormal distribution for the postoperative PROMIS PF T scores across all fracture patients (P = .0421). CONCLUSION: Operative fixation of an ankle fracture was able to return most patients to the population mean with regard to PROMIS function and pain regardless of fracture type. LEVEL OF EVIDENCE: Level II, prospective comparative study.
