Stabilization After Deep Sternal Wound Infection: Assessment of Most Suitable Osteosynthesis System and Presentation of a New Method for Grading Bone Pathology

Objective: Osteosynthesis in the case of a sternal wound infection is challenging. It requires osteosynthesis systems that go beyond the usual wire techniques. In principle, there are three different systems, namely plates with locking screws, clips, and distance systems, which are the original methods used in chest wall reconstruction. The aim of this study is to assign these systems to the corresponding sternal pathologies. Patients and methods: This is a retrospective single-center analysis. Bone pathology is divided into three grades: grade I (good substance/no fractures), grade II (good substance/few transverse fractures), grade III (poor substance/substance defects/multiple transverse fractures). The individual osteosynthesis systems are assigned to the different grades accordingly. The suitability of the individual systems is analyzed in the short term and long term. Results: A total of 130 patients were included. Stable osteosynthesis was achieved in all patients. For grade I defects, 75 plates and 24 clips were used. For grade II defects, mainly plates (255) but also clips (16) were used. A distance system was used 24 times for grade III defects. One plate fractured. No other implant-related complications occurred. Discussion: If the different osteosynthesis systems are used according to the bone pathology, a stable chest wall can be restored in all patients. The individual systems have their own specific characteristics, which must be taken into account with regard to the suitability and invasiveness of the procedure. No single system is suitable for treating all sternal pathologies.