Femoroazetabuläres Impingement – Update 2019

Heuck, A.; Dienst, Michael; Gläser, Christian

doi:10.1007/s00117-018-0486-1

Cited by 7 publications

(6 citation statements)

References 43 publications

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“…Dynamic and static factors affecting hip biomechanics and function are complex, but the most common morphological abnormalities are loss of femoral head-neck offset (cam type) and focal or global acetabular over coverage (pincer type) [ 4 ]. These anatomical abnormalities cause repeated impingement during dynamic hip movement, which can lead to loading of the femoral head–neck junction to the acetabular rim, labral injury, cartilage dissection, and premature degenerative changes [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

Characteristics of Biomechanical and Physical Function According to Symptomatic and Asymptomatic Acetabular Impingement Syndrome in Young Adults

et al. 2022

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Femoroacetabular impingement (FAI) is caused by hip joint anomalies. Although asymptomatic and symptomatic FAI have been reported in young adults, information on biomechanical and functional characteristics of FAI is rare. We compared the subjective hip score, range of motion (ROM), dynamic balance, and hip strength between symptomatic FAI (FAIsym) and asymptomatic FAI (FAIasym) groups and healthy controls. Participants (n = 307; men: 155, women: 152) were classified according to morphological abnormalities and hip joint symptoms, comprising symptomatic FAI, asymptomatic FAI, and healthy controls. The Copenhagen Hip and Groin Outcome Score (HAGOS), hip ROM, Y-balance test (YBT), and isokinetic hip strength were measured. The types of FAI were not significantly differenent in both men and women. FAIsym exhibited significantly reduced HAGOS, whereas FAIasym showed no significant difference compared to the healthy group (men: healthy 91.7 vs. FAIasym 87.2 vs. FAIsym 49.9, women: healthy 91.7 vs. FAIasym 86.2 vs. FAIsym 53.9). Hip flexion, adduction, and internal and external rotation ROMs were only significantly reduced in symptomatic FAI. Asymptomatic and symptomatic FAI groups displayed significantly lower YBT scores than healthy controls (men healthy: 84.9 vs. FAIasym: 69.0 vs. FAIsym 58.7, women healthy 79.2 vs. FAIasym 64.0 vs. FAIsym 55.5). Isokinetic hip flexion, adduction, and abduction strengths were significantly lower in FAIsym. In conclusion, FAIasym showed no decrease in muscle strength but displayed reduced dynamic balance. Subjective satisfaction, ROM, muscle strength, and dynamic balance were lower in FAIsym compared to FAIasym and healthy groups.

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Section: Discussionmentioning

confidence: 99%

Characteristics of Biomechanical and Physical Function According to Symptomatic and Asymptomatic Acetabular Impingement Syndrome in Young Adults

et al. 2022

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“…By contrast, the condition of the labrum, as other studies [6,17,30] have also shown, cannot be reliably assessed using noncontrast MRIs, particularly if the radiologist does not have sufficient experience. MR arthrography also does not offer current scientific endeavours any sufficiently reliable imaging of labral and cartilage lesions and thus the option of a traction MR arthrography was developed in order to overcome the inhibited penetration of the contrast medium into the central compartment through the very closely adjacent acetabular and femoral cartilage layers [11,30]. Other authors question the need for intraarticular contrast medium in the use of 3 T devices [31].…”

Section: Equipment-related Requirementsmentioning

confidence: 99%

“…Traction MRIs or 3D reconstructions can now be generated in order to increase the sensitivity for the identification of intraarticular pathologies. This has been done to date in studies and actual use in everyday medical practice is still unclear [11].…”

Section: Introductionmentioning

confidence: 99%

Diagnostic Use of Magnetic Resonance Imaging and Magnetic Resonance Arthrography for Intra-Articular Pathologies of the Hip Joint

Lerch

Lorenz

Kasperczyk³

et al. 2019

Z Orthop Unfall

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Introduction In no other country magnetic resonance imaging (MRI) is as frequently used as in Germany. The studyʼs aim is to analyse a daily referral procedure for hip MRI in German healthcare and to estimate ineffective costs for the healthcare system. Material and Methods Over one year 203 consecutive MRIs of the hip joint were analysed retrospectively. Referrals were reviewed for their indications, e.g. prevalence of MRIs to detect intra-articular pathologies in the German population was estimated with data of three health insurances. Results No indication was noted on 21% of the referrals to MRI. On 66% of the referrals a reasonable indications could be identified. There were more uncertainties of the indications for arthrographies. Collecting data concerning the prevalence of MRI for intra-articular hip pathologies is difficult due to the lack of precise diagnosis and procedure coding. The expendable costs caused by MRI of the hip joint amount from 800,000 to 2.4 million € during a one year period. Discussion Medical referrals should be used thoroughly for communication between referrers and radiologists. Contribution of the letter of referral to health economics is underestimated. To improve estimation of prevalences in the diagnostics of intra-articular hip pathologies, precise diagnosis and procedure codings are needed.

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“…The number of hip joint arthroscopies because of FAI has recently increased worldwide [1]. For clinical examination and anamnesis, preoperative radiological examination of the hip joint with X-rays in two planes is crucial for further therapy decisions [5]. Determination of the hip alpha angle is a very important tool regarding indication for surgery.…”

Section: Introductionmentioning

confidence: 99%

Sonography-Based Determination of Hip Joint Anterior Alpha-Angle: A Reliable and Reproducible Method

Schamberger

Stein

Gruber³

et al. 2021

Ultraschall Med

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Purpose Femoroacetabular impingement (FAI) is a known risk factor for hip osteoarthritis. The gold standard for diagnostics is X-ray and MRI. The accuracy of hip joint alpha angle measurements obtained using sonography is equal to measurements in MRI for patients with cam impingement of the hip joint. Materials and Methods Patients with hip pain and MRI and sonography were evaluated between January 2015 and December 2019 in a single center. Musculoskeletal sonography was performed according to the DEGUM guidelines by ultrasound-certified specialists. Measurements were repeated three times by two independent investigators. Results 285 patients were screened, and 110 patients (49 females, 61 males) met the inclusion criteria. The mean age at time of investigation of 54 left and 56 right hip joints was 54.2 years. 1320 measurements were performed. The mean alpha angle was 50.7° in MRI and 50.4° in sonography with a mean difference of 0.28° (p>0.05). Conclusion Determining hip alpha angle using sonography is a safe and reproducible method. No statistically significant differences between results in MRI and sonography could be seen. Although this is a retrospective, single-center study including only Caucasian mid-Europeans and with the known limitations of ultrasound imaging, it nevertheless shows that sonography can be used as a simple, cheap, and fast technique to assess the hip alpha angle without losing diagnostic quality.

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Femoroazetabuläres Impingement – Update 2019

Cited by 7 publications

References 43 publications

Characteristics of Biomechanical and Physical Function According to Symptomatic and Asymptomatic Acetabular Impingement Syndrome in Young Adults

Characteristics of Biomechanical and Physical Function According to Symptomatic and Asymptomatic Acetabular Impingement Syndrome in Young Adults

Diagnostic Use of Magnetic Resonance Imaging and Magnetic Resonance Arthrography for Intra-Articular Pathologies of the Hip Joint

Sonography-Based Determination of Hip Joint Anterior Alpha-Angle: A Reliable and Reproducible Method

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