Prevalence of Cam Deformity with Associated Femoroacetabular Impingement Syndrome in Hip Joint Computed Tomography of Asymptomatic Adults
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Purpose: Femoroacetabular 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 Methods: From 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. Results: The 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 (P<0.01). The prevalence of cam deformity was 18.0% and 19.0% in 1 and 2 o’clock, respectively. Conclusion: Cam 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).
Abstract
Purpose: Femoroacetabular 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 Methods: From 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. Results: The 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 (P<0.01). The prevalence of cam deformity was 18.0% and 19.0% in 1 and 2 o’clock, respectively. Conclusion: Cam 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).
참고문헌 (26)
- "Unfallchirurg", 1991, 172~175
- Ganz R, "Femoroacetabular impingement: a cause for osteoarthritis of the hip", Clin Orthop Relat Res, (417), pp.112~120 (2003)
- Bardakos NV, "Predictors of progression of osteoarthritis in femoroacetabular impingement: a radiological study with a minimum of ten years follow-up", J Bone Joint Surg Br, 91, pp.162~169 (2009)
- Kubiak-Langer M, "Range of motion in anterior femoroacetabular impingement", Clin Orthop Relat Res, 458, pp.117~124 (2007)
- Anderson K, "Hip and groin injuries in athletes", Am J Sports Med, 29, pp.521~533 (2001)[DOI]
- Siebenrock KA, "The cam-type deformity of the proximal femur arises in childhood in response to vigorous sporting activity", Clin Orthop Relat Res, 469, pp.3229~3240 (2011)[DOI]
- Beck M, "Hip morphology influences the pattern of damage to the acetabular cartilage: femoroacetabular impingement as a cause of early osteoarthritis of the hip", J Bone Joint Surg Br, 87, pp.1012~1018 (2005)
- Leunig M, "Femoroacetabular impingement. A common cause of hip complaints leading to arthrosis", Unfallchirurg, 108, pp.9~ (2005)[DOI]
- Clohisy JC, "Surgical treatment of femoroacetabular impingement: a systematic review of the literature", Clin Orthop Relat Res, 468, pp.555~564 (2010)[DOI]
- Notzli HP, "The contour of the femoral head-neck junction as a predictor for the risk of anterior impingement", J Bone Joint Surg Br, 84, pp.556~560 (2002)[DOI]
- Van Houcke J, "Prevalence of radiographic parameters predisposing to femoroacetabular impingement in young asymptomatic Chinese and white subjects", J Bone Joint Surg Am, 97, pp.310~317 (2015)[DOI]
- Rakhra KS, "Comparison of MRI alpha angle measurement planes in femoroacetabular impingement", Clin Orthop Relat Res, 467, pp.660~665 (2009)[DOI]
- Dudda M, "Do normal radiographs exclude asphericity of the femoral headneck junction", Clin Orthop Relat Res, 467, pp.651~659 (2009)[DOI]
- Ahn T, "What is the prevalence of radiographic hip findings associated with femoroacetabular impingement in asymptomatic Asian volunteers?", Clin Orthop Relat Res, 474, pp.2655~2661 (2016)[DOI]
- Kim J, "Prevalence of imaging features on CT thought to be associated with femoroacetabular impingement: a retrospective analysis of 473 asymptomatic adult hip joints", AJR Am J Roentgenol, 205, pp.W100~W105 (2015)[DOI]
- Pfirrmann CW, "Cam and pincer femoroacetabular impingement: characteristic MR arthrographic findings in 50 patients", Radiology, 240, pp.778~785 (2006)[DOI]
- Neumann M, "Impingementfree hip motion: the 'normal' angle alpha after osteochondroplasty", Clin Orthop Relat Res, 467, pp.699~703 (2009)[DOI]
- Fukushima K, "Prevalence of radiographic findings of femoroacetabular impingement in the Japanese population", J Orthop Surg Res, 9, pp.25~ (2014)[DOI]
- Takeyama A, "Prevalence of femoroacetabular impingement in Asian patients with osteoarthritis of the hip", Int Orthop, 33, pp.1229~1232 (2009)[DOI]
- Ito K, "Femoroacetabular impingement and the cam-effect. A MRIbased quantitative anatomical study of the femoral headneck offset", J Bone Joint Surg Br, 83, pp.171~176 (2001)
- Lavigne M, "Anterior femoroacetabular impingement: part I. Techniques of joint preserving surgery", Clin Orthop Relat Res, (418), pp.61~66 (2004)
- Hack K, "Prevalence of cam-type femoroacetabular impingement morphology in asymptomatic volunteers", J Bone Joint Surg Am, 92, pp.2436~2444 (2010)[DOI]
- Sutter R, "How useful is the alpha angle for discriminating between symptomatic patients with cam-type femoroacetabular impingement and asymptomatic volunteers?", Radiology, 264, pp.514~521 (2012)[DOI]
- Siebenrock KA, "Prevalence of cam-type deformity and hip pain in elite ice hockey players before and after the end of growth", Am J Sports Med, 41, pp.2308~2313 (2013)[DOI]
- Agricola R, "A cam deformity is gradually acquired during skeletal maturation in adolescent and young male soccer players: a prospective study with minimum 2-year follow-up", Am J Sports Med, 42, pp.798~806 (2014)[DOI]
- Nepple JJ, "Do plain radiographs correlate with CT for imaging of cam-type femoroacetabular impingement?", Clin Orthop Relat Res, 470, pp.3313~3320 (2012)[DOI]