The devastating effects of humeral nonunion on health-related quality of life

Abstract

Background: Humeral nonunion is estimated to occur at a rate of 1.1%-25% depending on the fracture location and pattern, mechanism of injury, patient compliance with the immobilization protocol and patient's nutritional status and medical comorbidities. Fracture nonunion can cause chronic pain and limited range of motion and may hinder normal function. There is very little data from the patients' perspective regarding their experience with a humeral nonunion. The aim of this study was to establish health-related quality of life (HRQoL) norms for patients diagnosed with a humeral nonunion.

Materials and methods: We reviewed a prospectively collected database of 185 humeral nonunions seen and treated at our quaternary referral center. We recorded patient characteristics including sex, age, history of infection, previous surgery, associated nerve palsy, handedness, and the anatomic location of the nonunion. At initial clinical evaluation, all patients were asked to complete the 12-Item Short Form Health Survey (SF-12), Disabilities of the Arm, Shoulder, and Hand (DASH) questionnaire, Brief Pain Inventory (BPI), and a time trade-off questionnaire. These scores were compared to other well-known chronic medical conditions' HRQoL scores.

Results: The cohort reported an average utility score of 0.55 ± 0.35, average SF-12 Physical Component Summary score of 30.2 ± 7.6, average SF-12 Mental Component Summary score of 42.5 ± 6.1, and average raw DASH score of 69 ± 21, which was worse than the general US population, patients with asthma, hypertension, stroke, type 2 diabetes, and AIDS. Patients with humeral nonunion are willing to trade 45% of their remaining life to obtain perfect health, and when stratified by handedness, we found that patients with a humeral nonunion of their dominant arm were willing to trade 49.7% compared with 39.7% in patients with a humeral nonunion of their nondominant arm (P = .04).

Discussion: The results of our study show that humeral nonunion is a chronic medical condition that has a debilitating effect on patients, both physically and mentally. It is important for orthopedic surgeons to acknowledge these conditions as physically and mentally debilitating to their patients. Our study highlights these physical and mental burdens and helps to quantify humeral nonunion in relation to more well-known chronic conditions, such as asthma, diabetes, AIDS, and stroke.

Conclusions: Humeral nonunions have a devastating effect on a patient's physical and mental health with HRQoL measures lower than patients with other chronic conditions, such as asthma, diabetes, AIDS, and stroke. We found that our patients, on average, would trade approximately 45% of their remaining life span for perfect health.

Keywords: DASH; Humeral; SF-12; fracture; health-related quality of life; nonunion.