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Risk factors for hip instability after acetabulum posterior wall fracture still unknown
In a study recently published in The Journal of Bone & Joint Surgery, researchers were unable to identify independent risk factors for hip instability after a fracture of the posterior wall of the acetabulum.
“Important factors leading to hip instability are yet to be identified or the contributions of the measured variables are relatively small, and therefore, dynamic stress examination under anesthesia should remain the main clinical determinant of hip stability status,” Berton R. Moed, MD, told Healio.com/Orthopedics.
To identify independent risk factors for hip instability after fracture of the posterior wall of the acetabulum, Moed and colleagues evaluated fracture fragment size, superior exit point of the fracture, center-edge angle, acetabular index, Tönnis angle, lateralized head sign, crossover sign, posterior wall sign, ischial spine sign and hip version in 68 adults treated between 2004 and 2015.
Univariate analysis initially showed a significant association between the posterior wall sign, ischial spine sign and proximity of the superior exit point of the fracture to the acetabular dome with hip instability. However, researchers found none of these factors were significant independent risk factors following multivariate logistic regression modeling. – by Casey Tingle
Disclosure s : The authors report no relevant financial disclosures.