ArticleJournal of orthopaedic surgery and research2016
A retrospective analysis on the correlation between hip pain, physical examination findings, and alpha angle on MR images.
Article in Journal of orthopaedic surgery and research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 9 citations in OpenAlex.
- Intra-articular Hip Injuries in National Basketball Association Players: A Descriptive Epidemiological Study.Orthopaedic journal of sports medicine · 2022Article
- Hip Range of Motion Is Increased After Hip Arthroscopy for Femoroacetabular Impingement: A Systematic Review.Arthroscopy, sports medicine, and rehabilitation · 2022Review
- The Association of α Angle on Disease Severity in Adolescent Femoroacetabular Impingement.Journal of pediatric orthopedics · 2021Article
- Hip pain and its correlation with cam morphology in young skiers-a minimum of 5 years follow-up.Journal of orthopaedic surgery and research · 2020Article
- The relationship between cam morphology and hip and groin symptoms and signs in young male football players.Scandinavian journal of medicine & science in sports · 2020Article
- Assessment of Hip Translation In Vivo in Patients With Femoracetabular Impingement Syndrome Using 3-Dimensional Computed Tomography.Arthroscopy, sports medicine, and rehabilitation · 2020Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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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