Pelvic fractures and high energy traumas

Comparative use of the computer-aided angiography and rapid prototyping technology versus conventional imaging in the management of the Tile C pelvic fractures

INTRODUCTION

Computed tomography (CT) scan with three-dimensional (3D) reconstruction has been used to evaluate complex fractures in pre-operative planning. In this study, rapid prototyping of a life-size model based on 3D reconstructions including bone and vessel was applied to evaluate the feasibility and prospect of these new technologies in surgical therapy of Tile C pelvic fractures by observing intra- and perioperative outcomes.

MATERIALS AND METHODS

The authors conducted a retrospective study on a group of 157 consecutive patients with Tile C pelvic fractures. Seventy-six patients were treated with conventional pre-operative preparation (A group) and 81 patients were treated with the help of computer-aided angiography and rapid prototyping technology (B group). Assessment of the two groups considered the following perioperative parameters: length of surgical procedure, intra-operative complications, intra- and postoperative blood loss, postoperative pain, postoperative nausea and vomiting (PONV), length of stay, and type of discharge.

RESULTS

The two groups were homogeneous when compared in relation to mean age, sex, body weight, injury severity score, associated injuries and pelvic fracture severity score. Group B was performed in less time (105 ± 19 minutes vs. 122 ± 23 minutes) and blood loss (31.0 ± 8.2 g/L vs. 36.2 ± 7.4 g/L) compared with group A. Patients in group B experienced less pain (2.5 ± 2.3 NRS score vs. 2.8 ± 2.0 NRS score), and PONV affected only 8 % versus 10 % of cases. Times to discharge were shorter (7.8 ± 2.0 days vs. 10.2 ± 3.1 days) in group B, and most of patients were discharged to home.

CONCLUSIONS

In our study, patients of Tile C pelvic fractures treated with computer-aided angiography and rapid prototyping technology had a better perioperative outcome than patients treated with conventional pre-operative preparation. Further studies are necessary to investigate the advantages in terms of clinical results in the short and long run.

Long-term outcome in patients with combined spinal and pelvic fractures

The outcome of 30 patients with combined spinal and pelvic fractures (C group) was retrospectively investigated and compared with matched group of similar number of isolated spinal fractures (S group) and isolated pelvic fractures (P Group), admitted to our institution between Jan 1998 and May 2002, following a high-energy trauma. After a mean follow-up of 57 months their outcomes were studied using EuroQol questionnaire and return to work status. The EQ-5D scores for patients in the S group were 0.71 (SD 0.29) compared to 0.60 (SD 0.14) for patients in the P group and 0.63 (SD 0.23) for patients in the C group. The EQ-VAS scores were similarly favourable towards patients in the S group. Seventy percent of patients in the S group returned to their previous level of employment after a mean duration of 5.3 months compared to 55% in the P group and 57% in the C group after a mean duration of 9.4 months and 12.8 months, respectively. Patients with isolated spinal fractures had an overall satisfactory outcome compared with patients in the other 2 groups. However, no difference was noted while analysing the outcomes in the later 2 groups (p<0.05), suggesting that the pelvic fracture contributes to the poor outcome, and the presence of a spinal fracture does not influence the long-term outcome. However, problems related to associated injuries and motor neurological deficits have profound confounding effect on the outcome in all 3 groups.

Impact of timing of pelvic fixation on functional outcome

Pelvic fractures are the third most common cause of death in motor vehicle accidents. Recent improvements in mortality can be attributed to the progress made in modern critical care medicine, multidetector CT, ATLS principles, multidisciplinary protocols and early fracture stabilisation. Currently, the timing of pelvic fixation is often based on the haemodynamic status and response of the patient to resuscitation, the fracture pattern, the presence of associated injuries and the immuno-inflammatory status of the patient. The purpose of this review is to focus on the impact of timing of reconstruction of pelvic fractures on the functional outcome of the patients. Thirty seven scientific studies on the outcome of pelvic and acetabular injuries were reviewed. Four on pelvic ring fractures, and one study on pelvic and acetabular fractures met our second inclusion criterion of prospective or retrospective studies investigating the outcome after early or late pelvic and acetabular fixation. These five studies suggested early pelvic and acetabular fixation for optimal outcome but their main difference was the definition of the length in time of that early period. In polytrauma patients, the "damage control orthopaedics" principle should be applied for haemodynamic and skeletal stabilisation (and faecal diversion, if indicated in cases of open fractures of the pelvis). The definitive fixation should be performed after the fourth post-injury day, when the physiological state of the patient is conducive to surgery.