Correlation of stability and complications measurements in traumatic hip dislocation cases associated with posterior wall acetabular fracture
Ali Gulec, Sadettin Ciftci
Selcuk University Faculty of Medicine Department of Orthopaedics and Traumatology, Konya, Turkey
Aim: To evaluate the relationship between stability criteria and complications in traumatic hip dislocations associatedwith posterior acetabular wall fracture.
Material and Methods: The study retrospectively investigated 18 patients treated for posterior acetabulum fracture dislocation in the orthopedics and traumatology clinicfrom 2014-2017. All patients had wall defect, acetabular fracture index and coronal posterior acetabular arc angle (PAAA)assessed. Fracture types were determined according to Letournel’s definitions.
Results: Preoperative radiological tests found the mean width of intact hip wall was 33.8 mm (range 31-39 mm), mean wall length in fracture hips was 13.7 mm (range 5-21 mm), and mean wall defect was measured as 59.1% (range 37.5-86%). When intact hips were assessed mean coronal PAAA was 54.2 degrees (range 41-65). For fractured hips, coronal PAAA was 18.2 degrees mean (range 6-29). Acetabular fracture index (AFI) was determined as mean 40.8 (range 14-62.5). Regarding complications in the postoperative period, one patient had avascular necrosis of the femoral head and 9 patients had osteoarthritis.
Conclusion: Though Defect percentage, AFI and coronal PAAA values are important proven markers for stability, in our study there was no correlation identified with complications.