Abstract:
UNLABELLED:New prostheses should be evaluated for stability and clinical performance. In a prospective randomized clinical trial, we implanted 22 titanium (Ti) and 20 hydroxyapatite-coated (HA) ProxiLock femoral hip prostheses during total hip arthroplasty in 42 patients. The patients were followed for 24 months with clinical, radiographic and radiostereometric analysis. Full weightbearing was allowed immediately postoperatively. One patient with a titanium stem was lost to followup. During the first two months, 34 of the 41 stems subsided and/or rotated towards retroversion, regardless of stem type. At the 24-month followup 35 of the 41 prostheses were either fully stabilized (16 HA and 11 Ti stems) or had clinical irrelevant migration (four HA and four Ti stems). Six Ti prostheses showed continuous migrations with maximums of 4.7 mm translation and 12.2 degrees retroversion; four of these were revised, the other two had no clinical complaints. CLINICAL RELEVANCE:The migration pattern we found indicates insufficient primary fixation of the ProxiLock stem in an immediate full weightbearing protocol. The HA coating improves the secondary stability of the prosthesis compared to the uncoated stem. Early migration is associated with an increased risk of possible future loosening and revision, and therefore we discontinued the use of this prosthesis. LEVEL OF EVIDENCE:Therapeutic Level I. See Guidelines for Authors for a complete description of levels of evidence.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Luites JW,Spruit M,Hellemondt GG,Horstmann WG,Valstar ERdoi
10.1097/01.blo.0000224011.12175.83subject
Has Abstractpub_date
2006-07-01 00:00:00pages
79-86eissn
0009-921Xissn
1528-1132pii
00003086-200607000-00013journal_volume
448pub_type
杂志文章,随机对照试验abstract:BACKGROUND:Decision-making regarding nonoperative versus operative treatment of patients with thoracolumbar burst fractures in the absence of neurologic deficits is controversial. Lack of evidence-based practice may result in patients being treated inappropriately and being exposed to unnecessary adverse consequences. ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,meta分析,评审
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abstract::Electron microscopic evaluation was investigated in surgical specimens of interdigital neuroma. Edema of the endoneureum, fibrosis beneath the perineurium, axonal degeneration and necrosis suggest nerve damage occurs secondary to mechanical impingement in the etiology of interdigital neuroma. ...
journal_title:Clinical orthopaedics and related research
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journal_title:Clinical orthopaedics and related research
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更新日期:2009-05-01 00:00:00
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
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更新日期:2005-01-01 00:00:00
abstract::Pigmented villonodular synovitis (PVNS) is an uncommon disorder of the synovium that rarely involves the hip joint. The natural history of an untreated case of PVNS is presented herein. A young adult with a painful hip and destructive changes on plain roentgenograms requires further diagnostic evaluation. The relative...
journal_title:Clinical orthopaedics and related research
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
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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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更新日期:2004-06-01 00:00:00
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-011-2160-z
更新日期:2012-02-01 00:00:00
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1979-03-01 00:00:00
abstract::In certain circumstances osteotomy of the greater trochanter in total hip arthroplasty is of benefit. To attack the problem of nonunion following trochanteric osteotomy, the authors apply several different wiring techniques. To quantify the efficacy of these approaches, they have reviewed 804 consecutive total hip art...
journal_title:Clinical orthopaedics and related research
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doi:
更新日期:1986-07-01 00:00:00
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1990-09-01 00:00:00
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journal_title:Clinical orthopaedics and related research
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更新日期:2011-07-01 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
pub_type: 杂志文章
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
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更新日期:1985-05-01 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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更新日期:2017-10-01 00:00:00
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
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pub_type: 杂志文章,评审
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
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更新日期:1999-02-01 00:00:00
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journal_title:Clinical orthopaedics and related research
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更新日期:2012-01-01 00:00:00
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journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
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更新日期:1979-05-01 00:00:00