The Prevalence of Femoroacetabular Impingement in Radiographs of Asymptomatic Subjects: A Cross-Sectional Study

Diesel, Cristiano Valter; Ribeiro, Tiango Aguiar; Scheidt, Rodrigo Benedet; Macedo, Carlos Alberto de Souza

doi:10.5301/hipint.5000250

Cited by 25 publications

(30 citation statements)

References 34 publications

(45 reference statements)

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“…Establishment of the prevalence of FAI-related morphologic features may be the first step to elucidating its natural history. A high prevalence of asymptomatic FAIrelated features has been reported in Western populations [5,10,17,22,23,26,27], but no clear consensus has been reached in Asian populations [12,21,25,30,31,44]. Previous studies of Western populations [5,10,17,22,23,26,27] reported a prevalence of 14% to 66%, with the prevalence varying according to the imaging method, population (such as an unselected population or a population consisting of athletes), sex of those analyzed, and morphologic features of interest (cam, pincer, or all types).…”

Section: Discussionmentioning

confidence: 98%

“…Although these morphologic features may cause pain and dysfunction in some hips, many hips remain asymptomatic, despite radiographic evidence of the FAIrelated features [38]. This had led many clinicians to question the prevalence of FAI-related morphologic features in asymptomatic individuals [5,10,17,22,23,26,27]. Studies from Western countries have reported a relatively high prevalence of these findings-up to 66% [5,10,17,22,23,26,27,29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

What is the Prevalence of Radiographic Hip Findings Associated With Femoroacetabular Impingement in Asymptomatic Asian Volunteers?

Ahn

Kim

et al. 2016

Clinical Orthopaedics &Amp; Related Research

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

What is the Prevalence of Radiographic Hip Findings Associated With Femoroacetabular Impingement in Asymptomatic Asian Volunteers?

Ahn

Kim

et al. 2016

Clinical Orthopaedics &Amp; Related Research

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“…Osteoarthritis of the hip is a multifactorial disease linked to systemic and local risk factors such as degeneration due to slipped capital femoral epiphysis, developmental dysplasia of the hip, and Legg-Calvé-Perthes disease [13]. Nevertheless, these theories cannot fully explain cases with early OA.…”

Section: Discussionmentioning

confidence: 99%

“…Pain may be elicited only in cases with underlying chondrolabral damage, and therefore, it must be remembered that the impingement test may be used to distinguish underlying chondrolabral damage [13]. …”

Section: Discussionmentioning

confidence: 99%

A retrospective analysis on the correlation between hip pain, physical examination findings, and alpha angle on MR images

et al. 2016

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BackgroundWe aimed to search whether alpha angle, a radiological clue used in the diagnosis of femoroacetabular impingement, is correlated with the presence of hip pain, internal rotation angle, and impingement test results on hip impingement patients (CAM type).MethodsMedical records of 334 patients (156 women, 178 men) with an average age of 33.8 ± 8.4 (range 20–50) years were retrospectively studied for the alpha angle of the hip measured on magnetic resonance images (MRI). Hip pain and internal rotation angles as well as results of impingement tests were reviewed.ResultsHip pain was reported more frequently on the right side (n = 35, 10.5%) compared to the left side (n = 22, 6.6%) (p = 0.047). No difference was observed between the right and left sides regarding alpha angles (p = 0.145), internal rotation angles (p = 0.637), or positivity of impingement test (p = 0.210). Internal rotation angles were significantly higher in cases without hip pain (p < 0.001) and in patients with negative impingement test result (p < 0.001). Internal rotation angle correlated positively with age and negatively with the alpha angle. Alpha angle was increased in cases that report pain, those with an internal rotation angle <20°, or cases with positive impingement test. The pain was more common, internal rotation angle was higher, and positivity for impingement was more frequent if the alpha angle was <55°. Patients with hip pain or positive impingement test or internal rotation angle <20° had increased alpha angles (p < 0.001).ConclusionsThe pain, impingement test results, and internal rotation angle seem to be associated with alpha angle of the hip measured on MRI in hip impingement patients.

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“…It is recognized as a common cause of pain and early development of osteoarthritis (Larson et al 2016; Kowalczuk et al 2015). The reported prevalence of asymptomatic FAI in radiographs is 23–32% for CAM lesions and 43–67% for pincer lesions (Frank et al 2015; Diesel et al 2015). Studies show that physical impairments for individuals with symptomatic FAI primarily consist of motions bringing the hip towards impingement.…”

Section: Introductionmentioning

confidence: 99%

Dynamic radiostereometric analysis for evaluation of hip joint pathomechanics

Hansen

Raedt²,

Jørgensen

et al. 2017

J EXP ORTOP

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BackgroundDynamic RSA (dRSA) enables non-invasive 3D motion-tracking of bones and may be used to evaluate in-vivo hip joint kinematics including hip pathomechanics such as femoroacetabular impingement (FAI) and the biomechanical effects of arthroscopic cheilectomy and -rim trimming (ACH).The study aim was to evaluate the kinematic changes in the hip joint after ACH.MethodsSeven non-FAI affected human cadaveric hips were CT-scanned and CT-bone models were created. dRSA recordings of the hip joints were acquired at five frames/s during passive flexion, adduction to stop, and internal rotation to stop (FADIR). ACH was performed and dRSA was repeated. dRSA images were analyzed using model-based RSA. Hip joint kinematics before and after ACH were compared pairwise. The volume of removed bone was quantified and compared to the postoperative range of motion (ROM).ResultsMean hip internal rotation increased from 19.1 to 21.9° (p = 0.04, Δ2.8°, SD 2.7) after ACH surgery. Mean adduction of 3.9° before and 2.7° after ACH surgery was unchanged (p = 0.48, Δ-1.2°; SD 4.3). Mean flexion angles during dRSA tests were 82.4° before and 80.8° after ACH surgery, which were similar (p = 0.18, Δ-1.6°, SD = 2.7). No correlation between volume of removed bone and ROM was observed.ConclusionsA small increase in internal rotation, but not in adduction, was observed after arthroscopic cheilectomy and -rim trimming in cadaver hips. The hip flexion angle of the FADIR test was reproducible. dRSA kinematic analysis is a new and clinically applicable method with good potential to evaluate hip joint kinematics and to test FAI pathomechanics and other surgical corrections of the hip.

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The Prevalence of Femoroacetabular Impingement in Radiographs of Asymptomatic Subjects: A Cross-Sectional Study

Abstract: Our study established a higher prevalence of radiographic markers of FAI in an asymptomatic population.

Cited by 25 publications

References 34 publications

What is the Prevalence of Radiographic Hip Findings Associated With Femoroacetabular Impingement in Asymptomatic Asian Volunteers?

What is the Prevalence of Radiographic Hip Findings Associated With Femoroacetabular Impingement in Asymptomatic Asian Volunteers?

A retrospective analysis on the correlation between hip pain, physical examination findings, and alpha angle on MR images

Dynamic radiostereometric analysis for evaluation of hip joint pathomechanics

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