Abstract:
:Roentgenographic analysis showed that centrifugation significantly reduced the gross and regional porosity of the cement compared with hand-mixed controls in a simulated total hip arthroplasty model. Static failure test of the prosthetic system demonstrated that the centrifuged cement had significantly greater strength than the hand-mixed cement. Under low-cycle fatigue tests of the same composite models, there was a trend for the centrifuged cement to be stronger than the hand-mixed specimens, although statistically it was not significant. Thus, centrifugation can reduce porosity and significantly improve the static strength of cement in a simulated in vitro total hip replacement model. When cement is used, any possible improvement in the physical properties of bone cement should be considered.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Chao EY,Chin HC,Stauffer RNsubject
Has Abstractpub_date
1992-12-01 00:00:00pages
91-101issue
285eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract::The trauma pandemic disproportionately kills and maims citizens of low-income countries although the immediate cause of the trauma is often an industrial export of a high-income country, such as a motor vehicle. Addressing the trauma pandemic in low-income countries requires access to relevant research information reg...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:10.1007/s11999-008-0397-y
更新日期:2008-10-01 00:00:00
abstract:UNLABELLED:Spinal infections are relatively uncommon but have potentially devastating consequences if not diagnosed and treated correctly. Compromised immunologic responsiveness, either transient or permanent, predisposes patients to more frequent and more severe infections. Through a Medline review of the English-lang...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:10.1097/01.blo.0000201176.87635.f3
更新日期:2006-03-01 00:00:00
abstract::Epiphyseal stapling is considered a safe, effective method of correcting angular deformities of the knee in growing children. A study of the underlying biochemical events would contribute to a better understanding of the control of longitudinal growth rate in epiphyseal growth plates and of the molecular pathology of ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1987-05-01 00:00:00
abstract::Failure of bone grafting in scaphoid nonunion presents the hand surgeon a perplexing set of problems. Controversy remains as to the best course of treatment in this difficult situation. The authors have retrospectively reviewed during a 5-year period the patients treated at the Mayo Clinic who have gone on to a second...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/00003086-199606000-00015
更新日期:1996-06-01 00:00:00
abstract::Osteopetrosis is an inherited skeletal condition characterized by increased bone radiodensity. There are three clinical groups: infantile-malignant autosomal recessive, fatal within the first few years of life (in the absence of effective therapy); intermediate autosomal recessive, appears during the first decade of l...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:
更新日期:1993-09-01 00:00:00
abstract::Bilateral simultaneous Achilles tendon ruptures are rare, with only ten cases reported in the English literature. Our case is that of a 44-year-old woman, along with a review of the literature. Affected persons usually are on chronic steroid treatment and in the fifth to seventh decades of life. The patient may have c...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1986-12-01 00:00:00
abstract:BACKGROUND:The standard approach to lateral tibial plateau fractures involves elevation of the iliotibial band (IT) and anterior tibialis origin in continuity from Gerdy's tubercle and metaphyseal flare. We describe an alternative approach to increase lateral plateau joint exposure and maintain iliotibial band insertio...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-013-2962-2
更新日期:2013-09-01 00:00:00
abstract::An approach to mild, moderate, and severe fixed valgus deformities of the knee is described. The sequential approach to soft-tissue releases in the fixed valgus knee allows the surgeon to regain a neutral alignment in valgus deformities of up to 90 degrees. An additional benefit of the approach is spontaneous correcti...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1990-11-01 00:00:00
abstract::Stress fractures of the base of the second metatarsal are common in ballet dancers and essentially are unreported in nondancers. We presumed base of the second metatarsal stress fractures in nondancers occur in a wide variety of individuals regardless of demographics, are highly associated with athletic activities, an...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/BLO.0b013e3180598ff2
更新日期:2007-08-01 00:00:00
abstract::Thirty revisions were performed on loose total hip replacements with a specific acetabular reconstruction technique combining the use of a bovine bone substitute and a support ring. One patient died of a cause unrelated to the procedure. No migration of the acetabular implant or bone lysis of the heterograft was seen ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/00003086-199609000-00013
更新日期:1996-09-01 00:00:00
abstract::Specific congenital malformations of the spine are consistently associated with characteristic types of urinary tract malformation. Patients with defects of the spine such as spina bifida occulta, partial or complete absence of the sacrum, unilateral or bilateral failure of segmentation, and wedged vertebrae are not u...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1980-05-01 00:00:00
abstract:BACKGROUND:Sacrectomy may offer curative potential for primary sarcomas of the sacrum. However, it is unclear whether and to what extent sacrectomies achieve local control. QUESTIONS/PURPOSE:We therefore determined the curative potential, walking ability, continence control, and quality of life for children after sacr...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-011-2199-x
更新日期:2012-05-01 00:00:00
abstract::Design of a synthetic replacement or selection of a biologic substitute requires detailed knowledge of the mechanical properties of the normal ligament. Femur-anterior cruciate ligament-tibia unit (ACL) data have been frequently used for this purpose, although not always properly. Mechanical properties of the human AC...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:
更新日期:1985-06-01 00:00:00
abstract:BACKGROUND:Pasteurized autograft is regarded as a biologic reconstructive option for managing bone defects after tumor resection; however, reports on long-term outcomes from large patient series are scarce. Contrary to previous favorable reports, we have observed many patients with failures, in particular as the durati...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999.0000000000000100
更新日期:2018-09-01 00:00:00
abstract::Forty-nine knees with osteochondritis dissecans were evaluated and in many cases, treated by arthroscopic means. The lesions were classified as to location and degree of separation. Arthroscopic treatment involved drilling, pinning, reduction of fragments, removal and replacement of fragments, and bone grafting. Of th...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1982-07-01 00:00:00
abstract::In this literature review, 30 reports provided outcome data on 37 direct exchange arthroplasties, 530 open debridements, and 23 arthroscopic debridements. The average followup was approximately 4 years, but the range was broad (range, 0.02-14 years). Infection was controlled in 33 of the 37 infected total knee arthrop...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/00003086-200211000-00022
更新日期:2002-11-01 00:00:00
abstract::Severe thoracolumbar kyphosis in Larsen's syndrome is rare. A successful 10-year treatment course, including T2-L4 subfascial rod placement when the patient was 6 years 3 months of age, nine periodic lengthenings, and definitive surgery at age 14 years 4 months is presented. From preoperative to 2-year postoperative d...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/00003086-200008000-00024
更新日期:2000-08-01 00:00:00
abstract::Orthopaedic surgery represents a specialty in which applicants are abundant, residency slots are limited, and all candidates presumably are qualified. Orthopaedic residency programs have members of the resident selection committee review medical school performance measures for the purpose of screening candidates to in...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:
更新日期:1999-05-01 00:00:00
abstract::There is no standardized method reported in the literature to measure ROM of the ankle after a total ankle arthroplasty, which limits the possibility to compare results from the various ankle designs. It seems that most of the measurements are a combination of ankle and midfoot motion, not the tibiotalar joint. A prot...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/01.blo.0000132180.69464.84
更新日期:2004-07-01 00:00:00
abstract:UNLABELLED:The need for segmental resection versus intralesional treatment of low-grade chondrosarcomas of the appendicular skeleton remains controversial. We hypothesized extended intralesional treatment would equally control malignant disease but with improved functional outcomes and decreased postoperative complicat...
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
abstract::In 20 white leghorn chickens, the effect of proximity (proximal vs. distal) to the repair site and the effect of sheath excision versus sheath repair on biochemical matrix formation in the healing zone 2 flexor tendon were studied. In 14 animals, the profundus tendon of the long toe on both feet was lacerated and repa...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1988-04-01 00:00:00
abstract::As degenerative changes progress in the aging population, more patients will present with degenerative spondylolisthesis. The clinical picture is usually of a woman older than 50 years of age with a degenerative lumbar spondylolisthesis at L5 with symptoms of neurogenic claudication or radiculopathy. Imaging studies w...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:
更新日期:2001-03-01 00:00:00
abstract::Glomus tumors are benign vascular tumors composed of round to oval uniform cells associated with vascular structures, usually found in the soft tissue of the nail bend. A 24-year-old woman with a two-year history of progressive right elbow pain and swelling was found to have a histologically characteristic intraosseou...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1987-07-01 00:00:00
abstract:BACKGROUND:Readmissions after total joint arthroplasty have become a key quality measure in elective surgery in the United States. The Affordable Care Act includes the Hospital Readmission Reduction Program, which calls for reduced payments to hospitals with excessive readmissions. This policy uses a method to determin...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-016-5156-x
更新日期:2017-05-01 00:00:00
abstract::Many different clinical circumstances are seen in revision total hip arthroplasty. Modular stems provide significant flexibility in choices to ensure distal and/or proximal unitary construct of implant and host bone. There are two basic types of modular stems. Designs that incorporate a metaphyseal sleeve taper fit wi...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:10.1097/00003086-200403000-00020
更新日期:2004-03-01 00:00:00
abstract::Insertion of distal interlocking screws in femoral nails can be technically demanding and may entail substantial exposure. A method of insertion of femoral interlocking screws that uses a laser guiding system in addition to the standard image intensifier was used in an attempt to improve the accuracy of distal screw p...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1992-08-01 00:00:00
abstract::Fourteen patients with separation of the distal clavicular metaphysis from the epiphysis were reviewed. These injuries, especially in the older child and adolescent, mimic acromioclavicular separation. However, they are really growth-plate injuries in which the epiphysis and physis maintain their normal anatomic relat...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1984-09-01 00:00:00
abstract::Endoprosthetic proximal femur replacement is a well-accepted method for treatment of primary bone tumors; however the functional results of treatment are not well documented. To evaluate functional outcomes, we recorded the Toronto Extremity Salvage Score and Musculoskeletal Tumor Society 1987 and 1993 scores in 29 pa...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/01.blo.0000136840.67864.78
更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:Interest in developing national health care has been increasing in many fields of medicine, including orthopaedics. One manifestation of this interest has been the development of global health opportunities during residency training. QUESTIONS/PURPOSES:We assessed global health activities and opportunities ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-013-3184-3
更新日期:2013-11-01 00:00:00
abstract:BACKGROUND:Low-cost indigenous megaprostheses used in the developing world are prone to mechanical failure but the frequency and causes are not well established. QUESTIONS/PURPOSES:We retrospectively analyzed the causes of failure, particularly design, and suggest changes to reduce the breakage. We also report our exp...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-010-1409-2
更新日期:2010-11-01 00:00:00