Quick-DASH as a main early outcome of humeral shaft fractures: A Latin American multicenter prospective study

Purpose: The main objective of this study was to evaluate the Quick-Disabilities of the Arm, Shoulder and Hand Score (DASH) score as the main early (90 days) outcome in a prospective multicenter observational Latin American study on isolated humeral shaft fractures. Methods: From December 2015 to April 2017, in six Latin American countries, patients 18 years or older with a closed, isolated nonpathological 12A, 12B, or 12C AO/OTA (Arbeitsgemeinschaft fur Osteosynthesefragen/Orthopaedic Trauma Association) fractures were included. The 90 (+/- 10)-day Quick-DASH score was used to compare the results of the different treatments. The secondary outcomes were patient treatment satisfaction, shoulder and elbow range of motion, and radiographic evaluation. Results: A total of 92 patients successfully completed the Quick-DASH questionnaire. Surgical treatments resulted in better outcomes than nonsurgical treatment, but only minimally invasive plate osteosynthesis produced significantly lower Quick-DASH scores than nonsurgical treatment (p< 0.05). There were strong correlations between patient self-evaluation and the Quick-DASH score (p< 0.0005) but not between the Quick-DASH score and radiographic fracture healing. No significant difference was found between the treatments regarding the rate of return to work, but the medical center had a significant influence on treatment choice (p< 0.0005). Conclusion: The high correlation between Quick-DASH score and patient satisfaction and functional outcome indicates that the Quick-DASH questionnaire is a suitable tool for evaluating adult humeral shaft fracture outcomes. Patients with a Quick-DASH score below 15 could be considered recovered, and patients with a Quick-DASH score above 40 could be considered not yet recovered. Quick-DASH scores were not significantly associated with radiographic fracture healing.