Treatment of traumatic sternal fractures with titanium plate internal fixation: a retrospective study
© The Author(s). 2017
Received: 3 November 2016
Accepted: 20 March 2017
Published: 4 April 2017
This study aim to evaluate surgical procedures for titanium plate internal fixation of sternal fractures with displacement or nonunion.
From January 2010 to December 2014, 64 patients with sternal fractures were treated with titanium plate internal fixation in the thoracic surgery department of the Shanghai Sixth People’s Hospital. Pain severity scale scores were analyzed preoperatively and postoperatively. All the patients had a 2-month follow-up for treatment evaluation.
The mean hospital length of stay was 16.89 days. Forty-five patients underwent surgery for combined injuries. A statistically significant difference (P < 0.05) was found between preoperative and postoperative pain severity scores (7.74 ± 0.89 vs. 3.80 ± 0.79, respectively). At follow-up, healing of the nonunion or fracture was confirmed in all the cases.
The rigid titanium plate application ensured a safe and easy management of traumatic sternal fractures and nonunion with a good prognosis as compared with other methods.
KeywordsChest trauma Sternal fracture Nonunion Internal fixation
Sternal fracture accounts for about 3–8% of admissions for thoracic trauma [1, 2]. It is not uncommon and is often caused by direct, frontal, blunt trauma to the sternum. Most sternal fractures heal with conservative management [1, 3, 4], but a few cases with instability or obvious displacement can lead to severe disabling conditions, including severe chest pain, dyspnea, persistent cough, and chest wall paradoxical motion.
The treatment most often used for this condition is corset fixation and bed rest for months, or steel wire fixation. The treatment often fails because of loss of tensile strength or wire cutout effect [5, 6]. Many authors reported the beneficial effect of plate internal fixation for sternal infection or nonunion after sternotomy. Sternal plating appears to be an effective treatment option for wound dehiscence associated with sternal instability [7–11]. The steel wire sealing technique is suitable for longitudinal sternotomy, but most traumatic sternal fractures are transverse fractures or nonunions. In these cases, internal fixation with a titanium locking plate is a better choice [12, 13].
We evaluated the status of sternal fractures by using computed tomography (CT) and three-dimensional (3-D) reconstruction imaging. Patients with sternal displacement or nonunion underwent surgery with a titanium plate, with screws rigidly fixed to the plate. The purpose of this study was to evaluate the therapeutic effect of this internal fixation technique.
From January 2010 to December 2014, 64 patients with sternal fractures were treated with titanium plate internal fixation in our thoracic surgery department. The operative criterion was a disabling nonunion or obvious displaced fracture of the sternum. The exclusion criteria were inability to provide informed consent or health status that ruled out general anesthesia.
The data were analyzed with SPSS version 19.0 (SPSS Inc., Chicago, IL, USA). The data with normal distribution were presented as mean ± standard deviation (SD) and independent sample t test, and enumeration data were expressed as a rate χ 2 test. P values of <0.05 were considered statistically significant.
General clinical characteristics of patients
n = 64
51 (min 21, max 71)
Operation time (min)
42.62 ± 10.23
Hospital stay time (day)
16.89 ± 3.52
Respiratory function and pain scale result
Clinical result of sternal internal fixation
Postoperation- day 7
39.18% ± 9.18%
52.91% ± 10.98%
88.19% ± 8.82%
41.83% ± 14.87%
63.11% ± 11.25%
85.26% ± 9.26%
7.74 ± 0.89
3.80 ± 0.79
Stable sternal fractures without displacement or full cortical disruption can be managed conservatively, with treatments including corset fixation and bed rest. However, for sternal fractures with obvious displacement, conservative therapy frequently fails and leads to a sternal nonunion due to multidirectional motion, with tension and compression caused by respiration. Mayberry et al.  identified three key points for intervention as follows: (1) the presence of a sternal deformity, (2) the loss of sternal continuity for a period exceeding 6 weeks, and (3) the persistence of chest pain (between 2 and 8 weeks, in the opinion of most surgeons surveyed). Divisi et al.  stated that possible injury to the underlying vascular structures must also be considered. Steel wire fixation is widely used in longitudinal sternotomy but often fails in horizontal fractures and nonunion. Several methods have been investigated to overcome this problem. These included combining the wires with anchor plates to increase the tensile strength [1, 15, 16] and even intramedullary plating . The number of cases using the above-described methods is still too small. These techniques seemed difficult because of the wide exposure of sternal fragments and the difficult positioning of the intramedullary pins.
In our clinical experience, titanium plate internal fixation is a fast, easy, and minimally invasive procedure. We noted the following advantages of this approach: (1) The exposure of the sternal fracture is minimal, without the need to expose the ribs and costal cartilage; thus, the risk of iatrogenic complications (intercostal and internal mammary artery injuries) is maximally reduced. (2) If the sternal face is not completely smooth, the titanium plate can easily be modeled according to the morphology of the fracture. Finally, (3) the locking screws offer a reliable and rigid fixation that can resist multidirectional tension. Precise depth measurement and intraoperative radiography can ensure that proper length screws are chosen. An X-shaped plate can be used for sternal fractures without nonunion. The linear plate prevents the movement of the sternal stumps, as it provides a rigid support for the sternum, with the screws anchored both above and below the fracture at the required distance. We do not recommend pulling the fracture components together into an assembly and using fixation to treat a sternal nonunion, as continuous and repeated shear force caused by respiration will loosen the fixation and lead to failure. We used allogeneic bone fragments to fill in the nonunion gap and then fixed the fracture with titanium plate, maintaining the sternum in a position of non-tension, with a satisfactory therapeutic result. Owing to the reduction of sternal fragment movement, chest pain was relieved rapidly and dramatically, as evidenced by the pain severity scores before and after surgery (7.74 ± 0.89 and 3.80 ± 0.79, respectively; P < 0.05). The patients had a shorter hospital mean length of stay of 8.89 days. The procedure resulted in satisfactory recovery, as 18 patients with isolated sternal fractures fully returned to their previous activity level by 3 months after operation.
The use of a titanium plate and locking screws offers a reliable method for the successful treatment of sternal nonunion and dislocated fractures, and might also be considered for treatment of sternal dehiscence after median sternotomy. We believe that internal fixation is a proper surgical treatment technique for sternal fractures and nonunion.
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Availability of data and materials
Data sharing not applicable to this article as no datasets were generated or analysed during the current study.
TCZ carried out the studies, participated in collecting data, and drafted the manuscript. YY carried out the manuscript review. ZLG carried out the manuscript editing. WMW participated in the literature research. WWH participated in the design of the study and performed the statistical analysis. YHZ conceived of the study, and participated in its design and coordination and helped to draft the manuscript. All authors read and approved the final manuscript.
The authors declare that they have no competing interests.
Consent for publication
Ethics approval and consent to participate
The study protocol was approved by the Ethics Committees of Shanghai Sixth People’s Hospital, Shanghai, and all participants provided written informed consent.
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