ArticleHip & pelvis2018
Prevalence of Cam Deformity with Associated Femoroacetabular Impingement Syndrome in Hip Joint Computed Tomography of Asymptomatic Adults.
Article in Hip & pelvis, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 20 citations in OpenAlex.
- Arthroscopy versus mini-open surgery for femoroacetabular impingement : A systematic review of clinical outcomes.Orthopadie (Heidelberg, Germany) · 2026Pooled it
- Over one third of patients with symptomatic femoroacetabular impingement display femoral or acetabular version abnormalities.Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA · 2021Pooled it
- Wide variations in the alpha angle reporting of the hip in asymptomatic individuals-a systematic review.Journal of hip preservation surgery · 2026Review
- Anatomic Analysis of Site-Specific Femoral Version and Cam Deformity in 1058 Cadaveric Hips.Orthopaedic journal of sports medicine · 2025Article
- Epidemiology of Femoroacetabular Impingement in Korea.Journal of Korean medical science · 2025Article
- Outcomes and complications of hip arthroscopy for femoroacetabular impingement syndrome: A narrative review.Journal of clinical orthopaedics and trauma · 2024Review
- Article
- Characteristics of Biomechanical and Physical Function According to Symptomatic and Asymptomatic Acetabular Impingement Syndrome in Young Adults.Healthcare (Basel, Switzerland) · 2022Article
- Sex-Based Differences in Femoroacetabular Impingement Syndrome and the Effect of Cam Deformity Location on the Extent of Labral Tearing: A 3-Dimensional Computed Tomography Study.Orthopaedic journal of sports medicine · 2022Article
- Prevalence of Morphological Variations Associated With Femoroacetabular Impingement According to Age and Sex: A Study of 1878 Asymptomatic Hips in Nonprofessional Athletes.Orthopaedic journal of sports medicine · 2021Article
- Hip and Groin Pain in Soccer Players.Joints · 2019Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeFemoroacetabular impingement (FAI) is considered an important cause of early degenerative arthritis development. Although three-dimensional (3D) imaging such as computed tomography (CT) and magnetic resonance imaging are considered precise imaging modalities for 3D morphology of FAI, they are associated with several limitations when used in out-patient clinics. The paucity of FAI morphologic data in Koreans makes it difficult to select the most effective radiographical method when screening for general orthopedic problems. We postulate that there might be an individual variation in the distribution of cam deformity in the asymptomatic Korean population. MATERIALS AND
methodsFrom January 2011 to December 2015, CT images of the hips of 100 subjects without any history of hip joint ailments were evaluated. A computer program which generates 3D models from CT scans was used to provide sectional images which cross the central axis of the femoral head and neck. Alpha angles were measured in each sectional images. Alpha angles above 55° were regarded as cam deformity.
resultsThe mean alpha angle was 43.5°, range 34.7-56.1°(3 o'clock); 51.24°, range 39.5-58.8°(2 o'clock); 52.45°, range 43.3-65.5°(1 o'clock); 44.09°, range 36.8-49.8°(12 o'clock); 40.71, range 33.5-45.8°(11 o'clock); and 39.21°, range 34.1-44.6°(10 o'clock). Alpha angle in 1 and 2 o'clock was significantly larger than other locations (
conclusionCam deformity of FAI was observed in 31% of asymptomatic hips. The most common region of cam deformity was antero-superior area of femoral head-neck junction (1 and 2 o'clock).
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.