Hip morphology influences the pattern of damage to the acetabular cartilage : Femoroacetabular impingement as a cause of early osteoarthritis of the HIP
Recently, femoroacetabular impingement has been recognised as a cause of early osteoarthritis. There are two mechanisms of impingement: 1) cam impingement caused by a non-spherical head and 2) pincer impingement caused by excessive acetabular cover. We hypothesised that both mechanisms result in dif...
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| Veröffentlicht in: | Journal of bone and joint surgery. British volume 2005-07, Vol.87 (7), p.1012-1018 |
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| container_title | Journal of bone and joint surgery. British volume |
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| creator | BECK, M KALHOR, M LEUNIG, M GANZ, R |
| description | Recently, femoroacetabular impingement has been recognised as a cause of early osteoarthritis. There are two mechanisms of impingement: 1) cam impingement caused by a non-spherical head and 2) pincer impingement caused by excessive acetabular cover. We hypothesised that both mechanisms result in different patterns of articular damage. Of 302 analysed hips only 26 had an isolated cam and 16 an isolated pincer impingement. Cam impingement caused damage to the anterosuperior acetabular cartilage with separation between the labrum and cartilage. During flexion, the cartilage was sheared off the bone by the non-spherical femoral head while the labrum remained untouched. In pincer impingement, the cartilage damage was located circumferentially and included only a narrow strip. During movement the labrum is crushed between the acetabular rim and the femoral neck causing degeneration and ossification. Both cam and pincer impingement lead to osteoarthritis of the hip. Labral damage indicates ongoing impingement and rarely occurs alone. |
| doi_str_mv | 10.1302/0301-620X.87B7.15203 |
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There are two mechanisms of impingement: 1) cam impingement caused by a non-spherical head and 2) pincer impingement caused by excessive acetabular cover. We hypothesised that both mechanisms result in different patterns of articular damage. Of 302 analysed hips only 26 had an isolated cam and 16 an isolated pincer impingement. Cam impingement caused damage to the anterosuperior acetabular cartilage with separation between the labrum and cartilage. During flexion, the cartilage was sheared off the bone by the non-spherical femoral head while the labrum remained untouched. In pincer impingement, the cartilage damage was located circumferentially and included only a narrow strip. During movement the labrum is crushed between the acetabular rim and the femoral neck causing degeneration and ossification. Both cam and pincer impingement lead to osteoarthritis of the hip. Labral damage indicates ongoing impingement and rarely occurs alone.</description><edition>British volume</edition><identifier>ISSN: 0301-620X</identifier><identifier>ISSN: 2049-4394</identifier><identifier>EISSN: 2044-5377</identifier><identifier>EISSN: 2049-4408</identifier><identifier>DOI: 10.1302/0301-620X.87B7.15203</identifier><identifier>PMID: 15972923</identifier><identifier>CODEN: JBSUAK</identifier><language>eng</language><publisher>London: British Editorial Society of Bone and Joint Surgery</publisher><subject>Acetabulum - diagnostic imaging ; Acetabulum - injuries ; Adult ; Biological and medical sciences ; Cartilage, Articular - diagnostic imaging ; Cartilage, Articular - injuries ; Diseases of the osteoarticular system ; Female ; Hip Joint - diagnostic imaging ; Hip Joint - pathology ; Humans ; Juxtaarticular diseases. Extraarticular rhumatism ; Male ; Medical sciences ; Middle Aged ; Orthopedic Procedures - methods ; Orthopedic surgery ; Osteoarthritis ; Osteoarthritis, Hip - etiology ; Osteoarthritis, Hip - pathology ; Radiography ; Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><ispartof>Journal of bone and joint surgery. 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British volume</title><addtitle>J Bone Joint Surg Br</addtitle><description>Recently, femoroacetabular impingement has been recognised as a cause of early osteoarthritis. There are two mechanisms of impingement: 1) cam impingement caused by a non-spherical head and 2) pincer impingement caused by excessive acetabular cover. We hypothesised that both mechanisms result in different patterns of articular damage. Of 302 analysed hips only 26 had an isolated cam and 16 an isolated pincer impingement. Cam impingement caused damage to the anterosuperior acetabular cartilage with separation between the labrum and cartilage. During flexion, the cartilage was sheared off the bone by the non-spherical femoral head while the labrum remained untouched. In pincer impingement, the cartilage damage was located circumferentially and included only a narrow strip. During movement the labrum is crushed between the acetabular rim and the femoral neck causing degeneration and ossification. Both cam and pincer impingement lead to osteoarthritis of the hip. Labral damage indicates ongoing impingement and rarely occurs alone.</description><subject>Acetabulum - diagnostic imaging</subject><subject>Acetabulum - injuries</subject><subject>Adult</subject><subject>Biological and medical sciences</subject><subject>Cartilage, Articular - diagnostic imaging</subject><subject>Cartilage, Articular - injuries</subject><subject>Diseases of the osteoarticular system</subject><subject>Female</subject><subject>Hip Joint - diagnostic imaging</subject><subject>Hip Joint - pathology</subject><subject>Humans</subject><subject>Juxtaarticular diseases. Extraarticular rhumatism</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Orthopedic Procedures - methods</subject><subject>Orthopedic surgery</subject><subject>Osteoarthritis</subject><subject>Osteoarthritis, Hip - etiology</subject><subject>Osteoarthritis, Hip - pathology</subject><subject>Radiography</subject><subject>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</subject><issn>0301-620X</issn><issn>2049-4394</issn><issn>2044-5377</issn><issn>2049-4408</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkctu1DAUQC0EotPCHyBkIdFdBj_jhB1UlKlUCRYgsbNunJsZV0kcbGcxf8LnkrQjitiwsuR77pHsQ8grzrZcMvGOScaLUrAf28p8NFuuBZNPyEYwpQotjXlKNn-QM3Ke0h1jTGktn5MzrmsjaiE35NfOT3QIcTqEPuyP1I9dP-PoMNF8QDpBzhhHGjrawgB7pDncD8BhhmbuIVIHMft-nb2n17i4wl9DP0x-3OOAY6aQKCz0nHD1IcT-SEPKGBbBIfrs03q_2nc3X1-QZx30CV-ezgvy_frTt6tdcfvl883Vh9vCyVrmAp2GrnNM1KhFqVSFldSmwxqWDwHX6oY5pkA1oEGVuhEasK2qlskOjG5RXpDLB-8Uw88ZU7aDTw77HkYMc7KlqUtWMv5fkBupuTF6Ad_8A96FOY7LI6wQdVlyw8QCqQfIxZBSxM5O0Q8Qj5Yzu_a1azy7xrNrX3vfd1l7fXLPzYDt49Ip6AK8PQGQHPRdhNH59MiVtdKsquVvAFWv9w</recordid><startdate>20050701</startdate><enddate>20050701</enddate><creator>BECK, M</creator><creator>KALHOR, M</creator><creator>LEUNIG, M</creator><creator>GANZ, R</creator><general>British Editorial Society of Bone and Joint Surgery</general><general>British Editorial Society of Bone & Joint Surgery</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>7QP</scope><scope>7X8</scope></search><sort><creationdate>20050701</creationdate><title>Hip morphology influences the pattern of damage to the acetabular cartilage : Femoroacetabular impingement as a cause of early osteoarthritis of the HIP</title><author>BECK, M ; KALHOR, M ; LEUNIG, M ; GANZ, R</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-ec5affc029e526448e8357fe9a152acd5b0c04a4ba5a465b25aed88d03fa75de3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Acetabulum - diagnostic imaging</topic><topic>Acetabulum - injuries</topic><topic>Adult</topic><topic>Biological and medical sciences</topic><topic>Cartilage, Articular - diagnostic imaging</topic><topic>Cartilage, Articular - injuries</topic><topic>Diseases of the osteoarticular system</topic><topic>Female</topic><topic>Hip Joint - diagnostic imaging</topic><topic>Hip Joint - pathology</topic><topic>Humans</topic><topic>Juxtaarticular diseases. Extraarticular rhumatism</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Orthopedic Procedures - methods</topic><topic>Orthopedic surgery</topic><topic>Osteoarthritis</topic><topic>Osteoarthritis, Hip - etiology</topic><topic>Osteoarthritis, Hip - pathology</topic><topic>Radiography</topic><topic>Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases</topic><toplevel>online_resources</toplevel><creatorcontrib>BECK, M</creatorcontrib><creatorcontrib>KALHOR, M</creatorcontrib><creatorcontrib>LEUNIG, M</creatorcontrib><creatorcontrib>GANZ, R</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Nursing & Allied Health Premium</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of bone and joint surgery. 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There are two mechanisms of impingement: 1) cam impingement caused by a non-spherical head and 2) pincer impingement caused by excessive acetabular cover. We hypothesised that both mechanisms result in different patterns of articular damage. Of 302 analysed hips only 26 had an isolated cam and 16 an isolated pincer impingement. Cam impingement caused damage to the anterosuperior acetabular cartilage with separation between the labrum and cartilage. During flexion, the cartilage was sheared off the bone by the non-spherical femoral head while the labrum remained untouched. In pincer impingement, the cartilage damage was located circumferentially and included only a narrow strip. During movement the labrum is crushed between the acetabular rim and the femoral neck causing degeneration and ossification. Both cam and pincer impingement lead to osteoarthritis of the hip. 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| subjects | Acetabulum - diagnostic imaging Acetabulum - injuries Adult Biological and medical sciences Cartilage, Articular - diagnostic imaging Cartilage, Articular - injuries Diseases of the osteoarticular system Female Hip Joint - diagnostic imaging Hip Joint - pathology Humans Juxtaarticular diseases. Extraarticular rhumatism Male Medical sciences Middle Aged Orthopedic Procedures - methods Orthopedic surgery Osteoarthritis Osteoarthritis, Hip - etiology Osteoarthritis, Hip - pathology Radiography Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases |
| title | Hip morphology influences the pattern of damage to the acetabular cartilage : Femoroacetabular impingement as a cause of early osteoarthritis of the HIP |
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