Analysis of compartment syndromes in lower extremity pediatric and adolescent trauma - are there predictors of a late onset?

INTRODUCTION: Purpose of the study was to answer the question, if there are common fracture or injury characteristics, which help to identify patient at risk for a secondary compartment syndrome. MATERIALS AND METHODS: Between 2003 and 2022 all children and adolescents who were treated for a traumatic compartment syndrome in a lower extremity were retrospectively evaluated. Patient's demographics were recorded, the underlying trauma mechanism identified. Fractures were classified, treatment and complications were analyzed. We differentiated two groups of patients (early onset vs. late onset) and compared trauma mechanism, fracture location, classification and treatment between those two entities. RESULTS: Our collective consisted of 56 children and adolescents with 67 compartment syndromes, with an average age of 14.1 years (5-17). 41 (73.2 %) of the patients were male and 15 (26.8 %) female. Most people in our sample had previously been involved in traffic accidents (64.3 %), with the most common mechanism of injury being "motorbike accident" (34.3 %) and "pedestrian/cyclist accident against car" (26.9 %). There was an accumulation of fractures of the lower leg, in particular tibial shaft fractures (AO 42 and 43A; 49.3 %). In our survey, dislocated fractures and fractures of the foot always led to an early onset of compartment syndrome. The tibial shaft fracture and the surgical treatment with intramedullary nailing showed a significant frequency in the late onset group. CONCLUSIONS: Special attention should be paid to pediatric and adolescent patients with tibial shaft fracture and surgical treatment with intramedullary nailing in order to detect and treat a possible late onset of a compartment syndrome at an early stage.

The impact of knee arthrodesis on gait kinematics, muscle activity and patient-reported outcome.

BACKGROUND: The aim of this retrospective study was to analyze gait kinematicsandoutcome parameters after knee arthrodesis. METHODS: Fifteenpatients with a mean follow-up of 5.9 (range0.8-36) years after unilateral knee arthrodesis were included. A 3D gait analysis was performed and compared to a healthy control group of14patients. Comparative electromyography was performed bilaterally at the rectus femoris, vastuslateralis/medialisand tibialis anterior muscles. The assessment further included standardized outcome scores- Lower Extremity Functional Scale (LEFS) andShort Form Health Survey (SF-36). RESULTS: The 3D analysis showed a significantly shortened stance phase (p = 0.000), an extended swing phase (p = 0.000), and an increased time per step (p = 0.009) for the operated side compared with thenonoperatedside. There were statistically significant differences in the extent of movement of the hips, knees and ankles among the operated andnonoperatedsides and the control group. For the mean EMG measurement, no significant difference was found between the healthy control group and the patients with arthrodesis.The average LEFSscorewas 27.5 ± 10.6out of a maximum of 80 points,and the mean physical total scale and mean emotional total scale scores for the SF-36 were 27.9 ± 8.5and 52.9 ± 9.9, respectively. CONCLUSIONS: Arthrodesis of the knee joint causes significant kinematic changes in gait pattern,and patients achieve poor results in subjective and functional outcomes(SF- 36, LEFS).Arthrodesis ensures that the extremities are preserved and can enable walking, but it must be viewed as a severe handicap for the patient.