Abstract：
BACKGROUND:Untreated hip dysplasia can result in a degenerative process joint and secondary osteoarthritis at an early age. While most periacetabular osteotomies (PAOs) are performed to relieve symptoms, the osteotomy is presumed to slow or prevent degeneration unless irreparable damage to the cartilage has already occurred. QUESTIONS/PURPOSES:We therefore determined (1) whether changes in the thickness of the cartilage in the hip occur after PAO, and (2) how many patients had an acetabular labral tear and whether labral tears are associated with thinning of the cartilage after PAO. PATIENTS AND METHODS:We prospectively followed 22 women and four men with hip dysplasia with MRI before PAO and again 1 year and 2(1/2) years postoperatively to determine if cartilage thinning (reflecting osteoarthritis) occurred. The thickness of the femoral and acetabular cartilage was estimated with a stereologic method. Three and one-half years postoperatively, 18 of 26 patients underwent MR arthrography to investigate if they had a torn acetabular labrum. RESULTS:The acetabular cartilage thickness differed between 1 and 2(1/2) years postoperatively (preoperative 1.40 mm, 1 year postoperatively 1.47 mm, and 2(1/2) years postoperatively 1.35 mm), but was similar at all times for the femoral cartilage (preoperative 1.38 mm, 1 year postoperatively 1.43 mm, and 2(1/2) years postoperatively 1.38 mm.) Seventeen of 18 patients had a torn labrum. The tears were located mainly superior on the acetabular rim. CONCLUSION:Cartilage thickness 2(1/2) years after surgery compared with preoperatively was unchanged indicating the osteoarthritis had not progressed during short-term followup after PAO.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Mechlenburg I,Nyengaard JR,Gelineck J,Soballe K,Troelsen Adoi
10.1007/s11999-010-1310-zsubject
Has Abstractpub_date
2010-07-01 00:00:00pages
1884-90issue
7eissn
0009-921Xissn
1528-1132journal_volume
468pub_type
杂志文章abstract：BACKGROUND:Anterior cruciate ligament (ACL) injures incur over USD 2 billion in annual medical costs and prevention has become a topic of interest in biomechanics. However, literature conflicts persist over how knee rotations contribute to ACL strain and ligament injury. To maximize the efficacy of ACL injury preventio...
journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1992-01-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
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journal_title：Clinical orthopaedics and related research
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doi：10.1007/s11999.0000000000000209
更新日期：2018-06-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199706000-00017
更新日期：1997-06-01 00:00:00
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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journal_title：Clinical orthopaedics and related research
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doi：
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