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A MULTICENTER RANDOMIZED CONTROL TRIAL OF NON-OPERATIVE AND OPERATIVE TREATMENT OF DISPLACED CLAVICLE SHAFT FRACTURES.



Abstract

Several recent studies have shown an increased incidence of symptomatic non-unions and malunions after non-operative treatment of displaced clavicle fractures. Our multicenter randomized control trial comparing sling treatment and plate fixation shows statistically significant improvement in patient oriented outcome measures at all time points measured over one year of follow-up. Non-operative group complications included six non-unions, one symptomatic malunion and one patient with reflex sympathetic dystrophy in thirty-four patients. Complications in the operative group included one wound dehiscence and two patients requiring plate removal in thirty-seven patients. This study supports plate fixation of acute clavicle fractures in selected cases.

To compare patient oriented outcomes of non-operative and operative treatment of displaced clavicle shaft fractures.

Operative fixation of displaced clavicle shaft fractures provides statistically significant improvement in functional outcome over sling treatment at one year of follow-up.

This study supports operative fixation of displaced clavicle shaft fractures in selected cases.

Seventy-one of one hundred and twenty patients have at least one year of follow-up. Non-operative group (N=34) consisted of twenty-four males with an average age thirty-two injuring fourteen dominant clavicles. The operative group (N= 37) consisted of thirty-three males with an average age of 34.5 years injuring twenty-one dominant clavicles. CSS and DASH scores were statistically different at all time points measured (p=0.001, p=0.021 respectively). Complications in the non-operative group included one patient with RSD, one symptomatic malunion and six patients with non-unions requiring ORIF. In the operative group, two patients experienced local plate irritation and one late wound dehiscence.

Randomization was by sealed envelope. Non-operative treatment was symptomatic in a sling, while operative patients underwent ORIF. CSS, DASH and SF-36 scores were collected at six weeks, three months, six months and twelve months. Statistical analysis was completed by repeated measures multivariate analysis using SPSS.

Recent studies have shown a higher incidence of symptomatic malunions and non-unions after sling treatment. Currently, sling treatment is standard of care for these fractures. Our study shows statistically signifi-cant improvement in functional outcome with operative treatment with few complications. This study supports operative treatment of displaced clavicle shaft fractures in selected cases.

Funding: OTA, Zimmer Inc

Please contact author for graphs and diagrams.

Correspondence should be addressed to Cynthia Vezina, Communications Manager, COA, 4150-360 Ste. Catherine St. West, Westmount, QC H3Z 2Y5, Canada