What are the significant factors affecting pain in patients with Hartofilakidis type Ι developmental dysplasia of the hip?

Abstract

Objective To explore the influencing factors of age at onset of pain and severe pain in patients with Hartofilakidis type I developmental dysplasia of the hip (DDH). Methods A retrospective study of 83 patients with DDH treated at our hospital from January 2017 to June 2021 was conducted. The age at onset of pain, patients’ demographic data, and radiographic parameters were collected. Multiple linear regression was used to determine the influencing factors of age at onset of pain. Cox regression analysis was used to determine the influencing factors of severe pain attacks. Results According to the results of multiple linear regression analysis, when the distance between the medial femoral head and the ilioischial line increased by one millimetre, the age at onset of pain decreased by 1.7 years (β = − 1.738, 95% CI − 1.914–[− 1.561], p < 0.001). When the sharp angle increases by one degree, the age at onset of pain decreases by 0.3 years (β = − 0.334, 95% CI − 0.496–[− 0.171], p < 0.001). According to the results of the Cox regression analysis, for each additional degree of the lateral centre-edge angle (LCEA), the probability of severe pain was reduced by 5% (Exp [β]: = 0.947, 95% CI 0.898–0.999, p = 0.044). For each additional millimetre in the distance between the medial femoral head and the ilioischial line, the likelihood of severe pain increased by 2.4 times (Exp [β]: 2.417, 95% CI 1.653–3.533, p < 0.001). Conclusion Larger distances between the medial femoral head and the ilioischial line and sharp angle can lead to an earlier age at onset of pain in patients with DDH. Small LCEA and excessive distance between the medial femoral head and the ilioischial line are risk factors for severe pain.

Construction of a predictive nomogram for functional recovery after Bernese Periacetabular Osteotomy

“…John C. Clohisy et al [13] found that the external movement of the hip center in DDH patients prolonged the gravity lever arm and increased the joint pressure, which may lead to earlier hip pain and increase the possibility of severe pain. The study by Yange Gu et al [14] showed that the greater distance from the innermost surface of the femoral head to the ilioischial line could lead to early pain symptoms in DDH patients and is a risk factor for severe pain. Our study suggests that the distance from the innermost surface of the femoral head to the ilioischial line clearly affects the functional recovery of patients after PAO, supporting the conclusions of the previous two studies.…”