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Introduction
Although shoulder girdle injuries are frequent, those of the medial part are widely unexplored.
Our aim is to improve the knowledge of this rare injury and its management in Germany
by big data analysis.
Methods
The data are based on ICD-10 codes of all German hospitals as provided by the German
Federal Statistical Office. Based on the ICD-10 codes S42.01 (medial clavicle fracture,
MCF) and S43.2 (sternoclavicular joint dislocation, SCJD), anonymized patient data from
2012 to 2014 were evaluated retrospectively for epidemiologic issues. We analyzed especially
the concomitant injuries and therapy strategies.
Results
A total of 114,003 cases with a clavicle involving shoulder girdle injury were identified with
12.5% of medial clavicle injuries (MCI). These were accompanied by concomitant injuries,
most of which were thoracic and craniocerebral injuries as well as injuries at the shoulder/
upper arm. A significant difference between MCF and SCJD concerning concomitant injuries
only appears for head injuries (p = 0.003). If MCI is the main diagnosis, soft tissue injuries
typically occur as secondary diagnoses. The MCI are significantly more often
associated with concomitant injuries (p < 0.001) for almost each anatomic region compared
with lateral clavicle injuries (LCI). The main differences were found for thoracic and upper
extremity injuries. Different treatment strategies were used, most frequently plate osteosynthesis
in more than 50% of MCF cases. Surgery on SCJD was performed with K-wires,
tension flange or absorbable materials, fewer by plate osteosynthesis.
Conclusions
We proved that MCI are rare injuries, which might be why they are treated by inhomogeneous
treatment strategies. No standard procedure has yet been established. MCI can
occur in cases of severely injured patients, often associated with severe thoracic or other
concomitant injuries. Therefore, MCI appear to be more complex than LCI. Further studies
are required regarding the development of standard treatment strategy and representative
clinical studies.