Radiological Assessment of Femoroacetabular Impingement Morphology Using Computed Tomography in an Asymptomatic Young Population

Teke, Memik; Göya, Cemil; Alemdar, Celil; Hamidi, Cihad; Çetinçakmak, Mehmet Güli; Hattapoğlu, Salih; Özkul, Emin; Bilici, Aslan

doi:10.5812/iranjradiol.22152

Cited by 2 publications

(4 citation statements)

References 26 publications

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“…The alpha angle is frequently used to assess cam impingement caused by femoral head asphericity and diminished femoral head–neck offset, and we considered an alpha angle > 55° abnormal, but this cut-off has not yet been firmly established in the current literature. Several authors (7,8,17,26) evaluated cam deformity by measuring AA in both the oblique axial plane and the radial plane and similarly found that the AA in the radial position revealed more abnormalities than in the oblique axial plane. Measuring only the AA in the oblique axial plane in our study may overestimate the prevalence of the cam impingement.…”

Section: Discussionmentioning

confidence: 99%

“…Teke et al. (17) found that 64.5% of the 400 joints had at least one abnormal morphological parameter associated with FAI in Turkey. At least one of the abnormal CT features was detected in 126/292 (43.2%) male hips and in 64/181 (35.4%) female hips in the Republic of Korea (21).…”

Section: Discussionmentioning

confidence: 99%

“…Another study (11) demonstrated that 31% of female joints (33% of female participants) and 48% of male joints (52% of male participants) had at least one factor for predisposing FAI in New Zealand. Teke et al (17) found that 64.5% of the 400 joints had at least one abnormal morphological parameter associated with FAI in Turkey. At least one of the abnormal CT features was detected in 126/292 (43.2%) male hips and in 64/181 (35.4%) female hips in the Republic of Korea (21).…”

Section: Discussionmentioning

confidence: 99%

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Prevalence of radiographic parameters on CT associated with femoroacetabular impingement in a Chinese asymptomatic population

Chen

et al. 2020

Acta Radiol

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Background Imaging evaluation of femoroacetabular impingement (FAI) plays a major role in early diagnosis and treatment, preventing irreversible degenerative changes in hip joints. Purpose To investigate the anatomical parameters associated with FAI in a Chinese asymptomatic population by computed tomography (CT) and to evaluate the prevalence of the radiographic features of cam and pincer types in Chinese patients. Material and Methods We reviewed the CT images of 470 hips in 235 Chinese patients who underwent abdominal and pelvic CT scans for reasons unrelated to hip symptoms at our hospital between February and October 2017. The following measurements were made on each hip joint: acetabular version angle (AV); anterior acetabular sector angle (AASA); posterior acetabular sector angle (PASA); the lateral center edge angle (LCE); the alpha angle (AA); and femoral head-neck offset (FHNO). Results Significant differences in all parameters were seen between men and women. Young men and elderly women showed more retroversion in our study. LCE, AA, and FHNO were all larger in men than women. The data showed 25% of female joints and 34.5% of male joints had at least one predisposing factor for FAI using measurement parameters by CT images in Chinese asymptomatic patients, and the prevalence of pincer lesion (19.1%) was larger than cam lesion (9.1%). Conclusion Morphological features associated with FAI are also present in Chinese asymptomatic patients. The threshold values for abnormal parameters should be reconsidered based on gender, age, and other factors in order to improve the accuracy of diagnosis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Prevalence of radiographic parameters on CT associated with femoroacetabular impingement in a Chinese asymptomatic population

Chen

et al. 2020

Acta Radiol

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“…All of these bone abnormalities are very common in the clinical practice, and have a close relationship with femoroacetabular impingement (FAI) (4). The abnormal impact of the acetabular labral margin and the proximal femur often occurs at the end of the hip joint movement, which can be induced by certain specific positions of hip activities (5)(6)(7).…”

Section: Introductionmentioning

confidence: 99%

Detection of Acetabular and Proximal Femoral Radiographic Abnormalities Showed by Hip Digital Tomosynthesis in Special Functional Position Compared with Conventional Radiography

et al. 2016

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Background: The acetabular and proximal femoral bone abnormalities are very common in the clinical practice. Conventional radiography has some difficulties in detecting early osseous changes. Digital tomosynthesis (DT) can remove the overlap of the anatomical structures, which improves the detection of early osseous changes. A special functional position can simulate the status of clinical symptoms; provide more evidence for clinical study of the acetabular and proximal femoral bone abnormalities and improve the accuracy. Objectives: To evaluate the diagnostic value of hip digital tomosynthesis at special functional position (DT-SFP) in detecting acetabular and proximal femoral radiographic abnormalities compared with conventional radiography. Patients and Methods: Ninety-four consecutive patients with discomfort around the hip joint underwent DT-SFP and conventional radiography. The imaging features of the acetabular and proximal femoral bone abnormalities were analyzed and the detection rate of the two methods was compared by chi-square test. Results: The herniation pits (HPs) of the femoral neck, acetabular/labral ossification, femoral head-neck junction bone protrusion, acetabular cysts, and acetabular osteophytes were detected by DT-SFP and conventional radiography. The detection rates of DT-SFP were 35%, 21%, 33%, 17% and 40% respectively, which were significantly higher than conventional radiography (21%, 9%, 10%, 7% and 31% respectively) (P = 0.000, 0.000, 0.000, 0.000, 0.001). The detection rate of coxa profunda, posterior wall sign and hip joint space narrowing showed no significant difference between using DT-SFP and conventional radiography (41%, 8% and 6% respectively) (P = 1.000, 1.000, 1.000). Conclusion: DT-SFP can improve the detection of relatively early bone abnormalities in acetabular and proximal femur compared with conventional radiography. DT-SFP can also observe the abnormal impact between acetabular and proximal femur.

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Radiological Assessment of Femoroacetabular Impingement Morphology Using Computed Tomography in an Asymptomatic Young Population

Cited by 2 publications

References 26 publications

Prevalence of radiographic parameters on CT associated with femoroacetabular impingement in a Chinese asymptomatic population

Prevalence of radiographic parameters on CT associated with femoroacetabular impingement in a Chinese asymptomatic population

Detection of Acetabular and Proximal Femoral Radiographic Abnormalities Showed by Hip Digital Tomosynthesis in Special Functional Position Compared with Conventional Radiography

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