NCT05893823

Retrospective Study on Radiological Factors Predictive of Psoas Impingement

Completed Results posted Last updated 1 July 2025

What this trial tests

trial testing Pelvis CT scan in Hip Impingement Syndrome in 52 participants. Completed in 14 June 2025.

Timeline

6 June 2022

Primary endpoint
6 June 2023

14 June 2025

Quick facts

Lead sponsor	Istituto Ortopedico Rizzoli
Status	Completed
Study type	OBSERVATIONAL
Enrollment	52
Start date	6 June 2022
Primary completion	6 June 2023
Estimated completion	14 June 2025
Sites	2 locations across Italy

Drugs / interventions tested

• Pelvis CT scan

Conditions studied

• Hip Impingement Syndrome — all drugs for Hip Impingement Syndrome →
• Prosthetic Complication — all drugs for Prosthetic Complication →

Sponsor

Istituto Ortopedico Rizzoli — full company profile →

Who can join

18 and older, any sex, with Hip Impingement Syndrome or Prosthetic Complication. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Acetabular Cup Antiversion Primary · at baseline (day 0)

The angle between the tangent to the cup opening and the tangent to the posterior ischial spines in the axial plane

Group	Value	95% CI
Cases	19.8	± 9.5
Controls	11.5	± 9.4

Acetabular Cup Inclination Primary · at baseline (day 0)

The angle between the tangent to the cup opening and the interteardrop line in the frontal plane

Group	Value	95% CI
Cases	41.8	± 6.9
Controls	43.5	± 5.8

Femoral Offset Primary · at baseline (day 0)

The distance between the center of rotation and the femoral axis in the frontal plane

Group	Value	95% CI
Cases	40.2	± 5.8
Controls	38.4	± 7.7

Acetabular Offset Primary · at baseline (day 0)

The distance between the center of rotation and the Kohler line in the frontal plane

Group	Value	95% CI
Cases	32.0	± 4.5
Controls	33.8	± 5.6

Eccentric Reaming Primary · at baseline (day 0)

The distance between the native hip center of rotation and the acetabular cup center of rotation in the axial plane

Group	Value	95% CI
Cases	1.8	± 4.0
Controls	0.8	± 3.7

Sponsor's own description

The purpose of this study is to identify radiological factors on TC of the hip that could lead to prediction of development of symptomatic psoas impingement in patients with protruding acetabular cup after primary total hip arthroplasty.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.