Abstract：
:High wear rates and high patient ion levels have been associated with high (> 55 degrees) cup inclination angles for metal-on-metal surface replacements. Wear rates and patterns have been simulated for ceramic-on-ceramic bearings by applying microseparation to replicate head offset deficiency. We tested 39-mm metal-on-metal surface replacements (n = 5) in a hip simulator with (A) an increased cup inclination angle of 60 degrees and (B) an increased cup inclination angle and microseparation over 2 million cycles. (A) resulted in a ninefold increase in wear rate and (B) resulted in a 17-fold increase in wear rate compared to a standard gait condition study. Wear particles produced under microseparation conditions were larger than those produced under standard conditions but of similar shape (round to oval). The data suggest both head and cup position influence the wear of surface replacements; we believe it likely bearings with high wear either have a high cup inclination angle, an offset deficient head, or a combination of both.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Leslie IJ,Williams S,Isaac G,Ingham E,Fisher Jdoi
10.1007/s11999-009-0830-xsubject
Has Abstractpub_date
2009-09-01 00:00:00pages
2259-65issue
9eissn
0009-921Xissn
1528-1132journal_volume
467pub_type
杂志文章abstract：:Arterial occlusion after total knee arthroplasty is an uncommon complication. In the literature only a few cases have been reported, and non consensus exists on the optimal management for this condition. The authors report two patients with popliteal artery thrombosis in the early postoperative period. Both patients w...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199909000-00020
更新日期：1999-09-01 00:00:00
abstract：:Long thought to be expendable or insignificant for function, the menisci may well be very important structures in the knee joint. Menisci are of critical importance from the standpoint of stability, shock absorption, load transmission, and lubrication, and also play a role in preventing synovial impingement, and in de...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1980-09-01 00:00:00
abstract：:A prospective study of 570 patients with fracture of the upper end of the femur was carried out between 1967 and 1971 in Jerusalem. Of three distinct ethnic groupings, Western or Ashkenazi females and Eastern or Sephardi males produced the highest incidence of fractured neck of the femur proportional to their makeup i...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1977-01-01 00:00:00
abstract：:Avascular necrosis of the femoral head affects 10,000 to 20,000 people every year and often these patients are in their 30s and 40s. The natural history of this disease is important to understand because the rate of femoral head collapse and treatment options are related to multiple factors including the cause of the ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/00003086-200401000-00007
更新日期：2004-01-01 00:00:00
abstract：:By the time a patient's shoulder problem has reached the stage in which an arthrodesis is being considered, the patient usually is willing to accept the restraints of an arthrodesed shoulder. If there is a chance of relieving chronic pain and restoring some reasonable degree of function in the upper extremity, arthrod...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-03-01 00:00:00
abstract：:The current study reviews the early history of surgeon-initiated trial and error development in hip joint arthroplasty and the subsequent methodological evolution to proper criteria for hypothesis testing using bioengineers and other research scientists. The interplay and relationships to industry, universities, scien...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：2000-09-01 00:00:00
abstract：:Bone morphogenic proteins (BMPs) may have neurotrophic functions but there is limited evidence of these functions in the peripheral nervous system. We therefore investigated the expression of BMPs and BMP receptors (BMPRs) in normal and injured peripheral nerves. In 10 of 15 Sprague-Dawley rats, a 3-mm segment of scia...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-1009-1
更新日期：2009-12-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0391-4
更新日期：2008-12-01 00:00:00
abstract：:Osteogenesis imperfecta (OI) Type II is a rare heritable disorder of bone matrix that results in catastrophic congenital skeletal dysplasia. Two cases of OI Type II had symmetric rhizomelic skeletal dysplasia apparent on ultrasound at 16 and 20 weeks' gestation. Histologic and histochemical studies performed on skelet...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-08-01 00:00:00
abstract：:A quantitative three-dimensional measurement method, radiographic stereophotogrammetry (SPG), was employed to assess the relation between early subsidence of the femoral prosthesis after total hip arthroplasty (THA) and subsequent clinical course. The SPG technique and the authors' error control mechanisms are describ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1985-12-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000185451.96987.aa
更新日期：2005-11-01 00:00:00
abstract：:This biographical sketch of Marshall R. Urist corresponds to the historic texts, The Classic: Bone Morphogenetic Protein, available at DOI 10.1007/s11999-009-1068-3; The Classic: A Morphogenetic Matrix for Differentiation of Cartilage in Tissue Culture, available at DOI 10.1007/s11999-009-1069-2; and The Classic: A Mo...
journal_title：Clinical orthopaedics and related research
pub_type： 传,历史文章,杂志文章
doi：10.1007/s11999-009-1067-4
更新日期：2009-12-01 00:00:00
abstract：BACKGROUND:Polyetheretherketone (PEEK) and its composites are polymers resistant to fatigue strain, radiologically transparent, and have mechanical properties suitable for a range of orthopaedic applications. In bulk form, PEEK composites are generally accepted as biocompatible. In particulate form, however, the biolog...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1007/s11999-016-4976-z
更新日期：2016-11-01 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：1997-10-01 00:00:00
abstract：:The Hall model of experimental arthritis of the knee (excision of the lateral femoral condyle) offers a unique way of investigating the earliest changes of degenerative arthritis. Predictable degeneration of the lateral tibial plateau occurs when there is lack of contact with an opposing surface. Previous work by Hall...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1977-06-01 00:00:00
abstract：:Bonesetting, a most ancient healing art, was absorbed into orthopaedic surgery approximately 120 years ago when Hugh Owen Thomas, a medical doctor specializing in pediatric deformities, assumed his father's nonmedical bonesetting practice. In many nonWestern nations, however, traditional bonesetters continue to treat ...
journal_title：Clinical orthopaedics and related research
pub_type： 历史文章,杂志文章
doi：
更新日期：1999-06-01 00:00:00
abstract：:This report presents an initial clinical experience with arterial embolization as adjuvent therapy in the surgical treatment of selected benign primary bone tumors in childhood. Embolization was dramatically effective in 4 children with spinal or pelvic vascular tumors. This technique facilitated local surgical resect...
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：UNLABELLED:There are many causes of total knee arthroplasty failure, and an accurate preoperative diagnosis is essential to optimize the results of revision surgery. We discuss our standard pre-operative evaluation routine and we retrospectively reviewed the last 295 patients who underwent revision total knee arthropla...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000218727.14097.d5
更新日期：2006-05-01 00:00:00
abstract：BACKGROUND:Combat-wounded service members are surviving battle injuries more than ever. Given different combat roles held by men and women, female service members should survive wounds at an unprecedented rate. QUESTIONS/PURPOSES:We determined whether the casualty rates for females differ from their male counterparts ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-1840-z
更新日期：2011-07-01 00:00:00
abstract：:Development leading to local bone differentiation in response to intramuscular and subcutaneous implantation of demineralized bone matrix has been predominantly investigated in rodents. To investigate bone differentiation by induction in primates, diaphyseal bone was harvested from ten male baboons and chemosterilized...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1991-08-01 00:00:00
abstract：BACKGROUND:Large-head metal-on-metal (MoM) hip arthroplasties have demonstrated poor survival. Damage at the taper-trunnion junction is a contributing factor; however, the influence of junction design is not well understood. QUESTIONS/PURPOSES:(1) Does taper type affect fretting, corrosion, and volumetric wear at the ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-013-3115-3
更新日期：2014-02-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200107000-00018
更新日期：2001-07-01 00:00:00
abstract：:Laboratory experiments show the following relationships between electricity and bone: (1) stressed bone exhibits electronegativity in areas of compression, (2) living, nonstressed bone exhibits electronegativity in areas of bone growth and healing, and (3) the application of low magnitude direct current to bone induce...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1977-05-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-0743-8
更新日期：2009-07-01 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：1981-10-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0691-8
更新日期：2009-08-01 00:00:00
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journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199707000-00029
更新日期：1997-07-01 00:00:00
abstract：BACKGROUND:To prevent symptomatic heterotopic ossification (HO) and guide primary prophylaxis in patients with combat wounds, physicians require risk stratification methods that can be used early in the postinjury period. There are no validated models to help guide clinicians in the treatment for this common and potent...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-015-4302-1
更新日期：2015-09-01 00:00:00
abstract：:One hundred twenty-six primary total hip arthroplasties composed of a hybrid cemented femoral component and a cementless acetabular component were followed for a minimum of two years (mean, 42 months). The average patient age was 63 years. The most common diagnosis was osteoarthritis (85 hips), although 13 of the case...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1989-12-01 00:00:00
abstract：BACKGROUND:Large-head metal-on-metal (MoM) bearing hip replacements have been shown to have a much higher rate of revision than other bearing surfaces. However, small-head (≤ 32 mm) MoM bearing surfaces have been in use for many years with several reports of satisfactory mid- to long-term survivorship. It is unclear wh...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999.0000000000000209
更新日期：2018-06-01 00:00:00
