Multifactorial pathomechanism of hip dysplasia and femoroacetabular impingement in young adults: the diamond concept

2021 ◽  
Author(s):  
Jennyfer A. Mitterer ◽  
Gilbert M. Schwarz ◽  
Alexander Aichmair ◽  
Jochen G. Hofstaetter
Keyword(s):  
Young Adults ◽  
Femoroacetabular Impingement ◽  
Hip Dysplasia ◽  
Diamond Concept

Regional muscle changes in adult dysfunctional hip conditions of femoroacetabular impingement and hip dysplasia

2019 ◽  
Vol 49 (1) ◽  
pp. 101-108
Author(s):  
Majid Chalian ◽  
Natalie Schauwecker ◽  
Anthony Cai ◽  
Riham Dessouky ◽  
Nicholas Fey ◽  
...  
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Dysplasia ◽  
Muscle Changes ◽  
Regional Muscle

Femoroacetabular Impingement in Adolescents and Young Adults

2009 ◽  
Vol 28 (3) ◽  
pp. 117-124 ◽  
Author(s):  
Erin S. Hart ◽  
Umesh S. Metkar ◽  
Gleeson N. Rebello ◽  
Brian E. Grottkau
Keyword(s):  
Young Adults ◽  
Femoroacetabular Impingement ◽  
Adolescents And Young Adults

Fovea Alta on MR Images: Is It a Marker of Hip Dysplasia in Young Adults?

2012 ◽  
Vol 199 (4) ◽  
pp. 879-883 ◽  
Author(s):  
Luis S. Beltran ◽  
Jason D. Mayo ◽  
Zehava S. Rosenberg ◽  
Maria Diaz De Tuesta ◽  
Olga Martin ◽  
...  
Keyword(s):  
Young Adults ◽  
Hip Dysplasia ◽  
Mr Images

scholarly journals High prevalence of hip lesions secondary to arthroscopic over- or undercorrection of femoroacetabular impingement in patients with postoperative pain

2021 ◽  
Author(s):  
Malin K. Meier ◽  
Till D. Lerch ◽  
Simon D. Steppacher ◽  
Klaus A. Siebenrock ◽  
Moritz Tannast ◽  
...  
Keyword(s):  
Femoroacetabular Impingement ◽  
Hip Dysplasia ◽  
Cartilage Damage ◽  
Imaging Findings ◽  
Femoral Torsion ◽  
Postoperative Imaging ◽  
Dichotomous Data ◽  
Cam Deformity ◽  
High Prevalence ◽  
Incremental Increase

Abstract Objectives To compare the prevalence of pre- and postoperative osseous deformities and intra-articular lesions in patients with persistent pain following arthroscopic femoroacetabular impingement (FAI) correction and to identify imaging findings associated with progressive cartilage damage. Methods Retrospective study evaluating patients with hip pain following arthroscopic FAI correction between 2010 and 2018. Pre- and postoperative imaging studies were analyzed independently by two blinded readers for osseous deformities (cam-deformity, hip dysplasia, acetabular overcoverage, femoral torsion) and intra-articular lesions (chondro-labral damage, capsular lesions). Prevalence of osseous deformities and intra-articular lesions was compared with paired t-tests/McNemar tests for continuous/dichotomous data. Association between imaging findings and progressive cartilage damage was assessed with logistic regression. Results Forty-six patients (mean age 29 ± 10 years; 30 female) were included. Postoperatively, 74% (34/46) of patients had any osseous deformity including 48% (22/46) acetabular and femoral deformities. Ninety-six percent (44/46) had an intra-articular lesion ranging from 20% (9/46) for femoral to 65% (30/46) for acetabular cartilage lesions. Prevalence of hip dysplasia increased (2 to 20%, p = 0.01) from pre- to postoperatively while prevalence of cam-deformity decreased (83 to 28%, p < 0.001). Progressive cartilage damage was detected in 37% (17/46) of patients and was associated with extensive preoperative cartilage damage > 2 h, i.e., > 60° (OR 7.72; p = 0.02) and an incremental increase in postoperative alpha angles (OR 1.18; p = 0.04). Conclusion Prevalence of osseous deformities secondary to over- or undercorrrection was high. Extensive preoperative cartilage damage and higher postoperative alpha angles increase the risk for progressive degeneration. Key Points • The majority of patients presented with osseous deformities of the acetabulum or femur (74%) and with intra-articular lesions (96%) on postoperative imaging. • Prevalence of hip dysplasia increased (2 to 20%, p = 0.01) from pre- to postoperatively while prevalence of a cam deformity decreased (83 to 28%, p < 0.001). • Progressive cartilage damage was present in 37% of patients and was associated with extensive preoperative cartilage damage > 2 h (OR 7.72; p = 0.02) and with an incremental increase in postoperative alpha angles (OR 1.18; p = 0.04).

Prevalence and diagnostic accuracy of in-toeing and out-toeing of the foot for patients with abnormal femoral torsion and femoroacetabular impingement

2019 ◽  
Vol 101-B (10) ◽  
pp. 1218-1229 ◽  
Author(s):  
Till D. Lerch ◽  
Patric Eichelberger ◽  
Heiner Baur ◽  
Florian Schmaranzer ◽  
Emanuel F. Liechti ◽  
...  
Keyword(s):  
Diagnostic Accuracy ◽  
Ct Scan ◽  
Femoroacetabular Impingement ◽  
Hip Dysplasia ◽  
False Positive Rate ◽  
False Negative ◽  
False Negative Rate ◽  
Controlled Study ◽  
Femoral Torsion ◽  
Foot Position

Aims Abnormal femoral torsion (FT) is increasingly recognized as an additional cause for femoroacetabular impingement (FAI). It is unknown if in-toeing of the foot is a specific diagnostic sign for increased FT in patients with symptomatic FAI. The aims of this study were to determine: 1) the prevalence and diagnostic accuracy of in-toeing to detect increased FT; 2) if foot progression angle (FPA) and tibial torsion (TT) are different among patients with abnormal FT; and 3) if FPA correlates with FT. Patients and Methods A retrospective, institutional review board (IRB)-approved, controlled study of 85 symptomatic patients (148 hips) with FAI or hip dysplasia was performed in the gait laboratory. All patients had a measurement of FT (pelvic CT scan), TT (CT scan), and FPA (optical motion capture system). We allocated all patients to three groups with decreased FT (< 10°, 37 hips), increased FT (> 25°, 61 hips), and normal FT (10° to 25°, 50 hips). Cluster analysis was performed. Results We found a specificity of 99%, positive predictive value (PPV) of 93%, and sensitivity of 23% for in-toeing (FPA < 0°) to detect increased FT > 25°. Most of the hips with normal or decreased FT had no in-toeing (false-positive rate of 1%). Patients with increased FT had significantly (p < 0.001) more in-toeing than patients with decreased FT. The majority of the patients (77%) with increased FT walk with a normal foot position. The correlation between FPA and FT was significant (r = 0.404, p < 0.001). Five cluster groups were identified. Conclusion In-toeing has a high specificity and high PPV to detect increased FT, but increased FT can be missed because of the low sensitivity and high false-negative rate. These results can be used for diagnosis of abnormal FT in patients with FAI or hip dysplasia undergoing hip arthroscopy or femoral derotation osteotomy. However, most of the patients with increased FT walk with a normal foot position. This can lead to underestimation or misdiagnosis of abnormal FT. We recommend measuring FT with CT/MRI scans in all patients with FAI. Cite this article: Bone Joint J 2019;101-B:1218–1229

scholarly journals Total hip replacement in young adults with hip dysplasia

2011 ◽  
Vol 82 (2) ◽  
pp. 149-154 ◽  
Author(s):  
Ingvild Ø Engesæter ◽  
Trude Lehmann ◽  
Lene B Laborie ◽  
Stein Atle Lie ◽  
Karen Rosendahl ◽  
...  
Keyword(s):  
Young Adults ◽  
Total Hip Replacement ◽  
Hip Replacement ◽  
Hip Dysplasia ◽  
Total Hip

Spectrum of Radiographic Femoroacetabular Impingement Morphology in Adolescents and Young Adults: An EOS-Based Double-Cohort Study

2013 ◽  
Vol 95 (13) ◽  
pp. e90-1-8 ◽  
Author(s):  
Matthew R Schmitz ◽  
Bernd Bittersohl ◽  
Daniela Zaps ◽  
James D Bomar ◽  
Andrew T Pennock ◽  
...  
Keyword(s):  
Young Adults ◽  
Cohort Study ◽  
Femoroacetabular Impingement ◽  
Adolescents And Young Adults
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