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  • Agnvall, C. (author)

Range of Hip Joint Motion Is Correlated With MRI-Verified Cam Deformity in Adolescent Elite Skiers

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-06-28
  • SAGE Publications,2017

Numbers

  • LIBRIS-ID:oai:gup.ub.gu.se/255458
  • https://gup.ub.gu.se/publication/255458URI
  • https://doi.org/10.1177/2325967117711890DOI

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  • Language:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • Background: Radiologically verified cam-type femoroacetabular impingement (FAI) has been shown to correlate with reduced internal rotation, reduced passive hip flexion, and a positive anterior impingement test. Purpose: To validate how a clinical examination of the hip joint correlates with magnetic resonance imaging (MRI)-verified cam deformity in adolescents. Methods: The sample group consisted of 102 adolescents with the mean age 17.7 +/- 1.4 years. The hip joints were examined using MRI for measurements of the presence of cam (alpha-angle >55) and clinically for range of motion (ROM) in both supine and sitting positions. The participants were divided into a cam and a noncam group based on the results of the MRI examination. Passive hip flexion, internal rotation, anterior impingement, and the FABER (flexion, abduction, and external rotation) test were used to test both hips in the supine position. With the participant sitting, the internal/external rotation of the hip joint was measured in 3 different positions of the pelvis (neutral, maximum anteversion, and retroversion) and lumbar spine (neutral, maximum extension, and flexion). Results: Differences were found between the cam and noncam groups in terms of the anterior impingement test (right, P = .010; left, P = .006), passive supine hip flexion (right: mean, 5; cam, 117; noncam, 122 [P = .05]; and left: mean, 8.5; cam, 116; noncam, 124.5 [P = .001]), supine internal rotation (right: mean, 4.9; cam, 24; noncam, 29 [P = .022]; and left: mean, 4.8; cam, 26; noncam, 31 [P = .028]), sitting internal rotation with the pelvis and lumbar spine in neutral (right: mean, 7.95; cam, 29; noncam, 37 [P = .001]; and left: mean, 6.5; cam, 31.5; noncam, 38 [P = .006]), maximum anteversion of the pelvis and extension of the lumbar spine (right: mean, 5.2; cam, 20; noncam, 25 [P = .004]; and left: mean, 5.85; cam, 20.5; noncam, 26.4 [P = .004]), and maximum retroversion of the pelvis and flexion of the spine (right: mean, 8.4; cam, 32.5; noncam, 41 [P = .001]; and left: mean, 6.2; cam, 36; noncam, 42.3 [P = .012]). The cam group had reduced ROM compared with the noncam group in all clinical ROM measures. Conclusion: The presence of cam deformity on MRI correlates with reduced internal rotation in the supine and sitting positions, passive supine hip flexion, and the impingement test in adolescents.

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  • Aminoff, Amina SwärdGothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för ortopedi,Institute of Clinical Sciences, Department of Orthopaedics (author)
  • Todd, C. (author)
  • Jonasson, PallGothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för ortopedi,Institute of Clinical Sciences, Department of Orthopaedics (author)
  • Thoreson, Olof,1981Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för ortopedi,Institute of Clinical Sciences, Department of Orthopaedics(Swepub:gu)xthool (author)
  • Swärd, Leif,1945Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för ortopedi,Institute of Clinical Sciences, Department of Orthopaedics(Swepub:gu)xswale (author)
  • Karlsson, Jón,1953Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för ortopedi,Institute of Clinical Sciences, Department of Orthopaedics(Swepub:gu)xkajon (author)
  • Baranto, Adad,1966Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för ortopedi,Institute of Clinical Sciences, Department of Orthopaedics(Swepub:gu)xbarad (author)
  • Göteborgs universitetInstitutionen för kliniska vetenskaper, Avdelningen för ortopedi (creator_code:org_t)

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