Abstract:
:Highly cross-linked polyethylene (PE) has been introduced as an alternative bearing material in total hip arthroplasty (THA) because of high wear resistance in laboratory tests but the clinical experience of this material is limited. We evaluated a highly cross-linked PE (warm irradiated adiabatic melting, absorbed dose, 95 kGy) in a randomized study of cemented THAs. Cups of the same design but made of conventionally gamma irradiated PE (absorbed dose, 25-40 kGy) constituted the control group. Sixty-one hips (30 women, 30 men) with a median age of 55 years (range, 35-70 years) were included. All patients received a Spectron stem with 28-mm CoCr head. Radiostereometric examinations with the patient supine or standing were done at regular intervals. Wear was measured with the patient in the supine position from the first postoperative week, whereas examinations done with the patient standing were initiated 3 months after the operation. Dual x-ray absorptiometry and conventional radiography were used to evaluate the bone mineral density and the radiolucencies around the acetabular component. Fifty-two patients (53 hips; 25 highly cross-linked, 28 control) have been followed up for 2 years. At the 2-year followup, the highly cross-linked cups showed 50% reduction of proximal wear compared with the control group, when the patients were studied standing. When evaluated supine, the difference in proximal wear did not reach significance. The migration of the socket, the relative changes of periprosthetic bone mineral density, and the progression of radiolucencies between the immediately postoperative followup and 2-year followup did not differ. Highly cross-linked PE showed increase resistance to wear. Different mechanical properties of the two types of PE studied did not alter the performance of the cup in terms of fixation, periprosthetic bone loss, and radiographic appearance. However, the followup is short and these results are preliminary.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Digas G,Kärrholm J,Thanner J,Malchau H,Herberts Pdoi
10.1097/01.blo.0000096802.78689.45subject
Has Abstractpub_date
2003-12-01 00:00:00pages
126-38issue
417eissn
0009-921Xissn
1528-1132pub_type
临床试验,杂志文章,随机对照试验abstract:BACKGROUND:The Lysholm knee scale, first published in 1982, is an eight-item questionnaire designed to evaluate patients after knee ligament injury. However, as a tool developed in English, its use as a validated instrument has been limited to English-language populations. QUESTIONS/PURPOSES:The objectives of this stu...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-013-3046-z
更新日期:2013-08-01 00:00:00
abstract::With the resurgence of metal-on-metal bearings, there is renewed interest in total hip resurfacing. A cementless acetabular component used for resurfacing with a wall thickness of fewer than 5 mm is comparable in size to acetabular components used for total hip replacement. The fixation of a porous-ingrowth acetabular...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:10.1097/01.blo.0000150319.35347.2d
更新日期:2004-12-01 00:00:00
abstract:BACKGROUND:Bone marrow stimulation techniques in cartilage repair such as drilling are limited by the formation of fibrous to hyaline-like repair tissue. It has been suggested such techniques can be enhanced by covering the defect with scaffolds. We present an innovative approach using a polyglycolic acid (PGA)-hyaluro...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-011-2107-4
更新日期:2012-03-01 00:00:00
abstract::Two hundred and twenty-one consecutive arthroscopic examinations of the knee are reviewed to establish diagnostic accuracy based on subsequent arthrotomy and the clinical course in the absence of arthrotomy. One hundred and nine knees showed an arthroscopic accuracy of 89.9 per cent at subsequent arthrotomy. Ninety-fi...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1976-11-01 00:00:00
abstract::One hundred seventy-three cases of intertrochanteric fractures treated by internal fixation are reviewed: 72 treated with the Jewett nail and 101 with the Richards compression hip screw. Both devices maintained adequate reduction in the majority of cases. Treatment failure: loss of fixation, symptomatic joint penetrat...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1980-01-01 00:00:00
abstract::Current-generation metal-on-metal hip resurfacing implants (SRAs) have been in widespread global use since the 1990s, and in the United States, specific implants have recently been approved for clinical use. Many recent publications describe short-term survivorship achieved by either implant-designing surgeons or high...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-009-1157-3
更新日期:2010-02-01 00:00:00
abstract::During the period from March 1983 to April 1987, autotransfusion was used in 64 patients treated with cementless revision total hip arthroplasties. An average of 3.9 units of intraoperative blood was salvaged, using a semicontinuous system; 6.5 units were salvaged in patients requiring segmental grafting of the acetab...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
abstract:BACKGROUND:Coronal malalignment occurs frequently in TKA and may affect implant durability and knee function. Designed to improve alignment accuracy and precision, the patient-specific positioning guide is predicated on restoration of the overall mechanical axis and is a multifaceted new tool in achieving traditional g...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-011-1996-6
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:The Musculoskeletal Tumor Society (MSTS) scoring system developed in 1993 is a widely used disease-specific evaluation tool for assessment of physical function in patients with musculoskeletal tumors; however, only a few studies have confirmed its reliability and validity. QUESTIONS/PURPOSES:The aim of this...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-017-5390-x
更新日期:2017-09-01 00:00:00
abstract::Numerous important developments in tissue engineering of new bone during the last 10 years are reviewed. Early efforts to combine cells with biocompatible materials are described and applications of this technology are presented with particular focus on uses in orthopaedics and maxillofacial surgery. Basic principles ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:10.1097/00003086-199910001-00036
更新日期:1999-10-01 00:00:00
abstract::One hundred seventy-five patients with 243 consecutive primary Press Fit Condylar cruciate-substituting total knee replacements were evaluated at a mean of 5.5 years. One hundred thirteen knees had modular metal-backed tibial components and 130 had all-polyethylene tibial components. The mean knee score and functional...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/00003086-200111000-00021
更新日期:2001-11-01 00:00:00
abstract::Myositis ossificans of the thigh produced severe limitation of knee motion in a 22-year-old man after passive manipulation of a knee on three separate occasions. Motion improved after excision of the bony mass and postoperative radiation to prevent recurrence. Caution is advised in passive manipulation of the knee, be...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1985-09-01 00:00:00
abstract:BACKGROUND:Although not all elderly patients with femoral neck fractures are candidates for THA, active, mentally competent, independent patients achieve the most durable functional scores with THA compared with hemiarthroplasty. However, a relatively high frequency of early or late dislocation could reduce the potenti...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-011-1987-7
更新日期:2011-11-01 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
abstract:UNLABELLED:The success of metal-on-metal hip resurfacing in the medium term in young and active patients is becoming evident. The procedure now can be done using a minimal approach developed by the senior author using a single posterior incision. This mini-incision resurfacing arthroplasty of the hip has made resurfaci...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/01.blo.0000192034.37049.83
更新日期:2005-12-01 00:00:00
abstract::The influence of muscle activity and forearm position on the stability of the lateral collateral ligament deficient elbow was investigated in vitro, using a custom testing apparatus to simulate active and passive elbow flexion. Rotation of the ulna relative to the humerus was measured before and after sectioning of th...
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::Idiopathic subluxation of the radial head (ISRH) is a rare entity that is separate from congenital dislocations of the radial head, both symptomatically and radiographically. ISRH causes pain and restriction of rotation. A dome-shaped radial head, a hypertrophied ulna, and a hypoplastic capitellum are not present in I...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1987-01-01 00:00:00
abstract:BACKGROUND:Patient expectations may affect their satisfaction and functional outcomes after treatment of musculoskeletal injuries. Although there is evidence that patient expectations of ACL reconstruction (ACLR) are inflated, there is limited knowledge about the relationship between physician and patient expectations ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/CORR.0000000000001082
更新日期:2020-03-01 00:00:00
abstract::Several extracellular matrices are formed by healing fractures, and the collagens within these matrices have been identified in rabbit and rat fracture models. Type III collagen is the major collagen of the fibrous matrix that forms along the periosteal surface. Type I collagen is secreted in large amounts as trabecul...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:
更新日期:1990-06-01 00:00:00
abstract::A small amount of partially purified, water-soluble murine osteosarcoma-derived bone morphogenetic protein (BMP) was implanted into the dorsal muscles of mice in combination with calf skin gelatin or collagen as carriers. Changes in the ribs adjacent to the implants were then chronologically observed. On implantation ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1989-02-01 00:00:00
abstract::Skeletal cryptococcosis is an uncommon infection. Isolated osteomyelitis due to Cryptococcus neoformans is quite rare. Only seven cases of skeletal cryptococcosis with involvement of vertebrae but no systemic infection have been reported. In only one was there paraplegia. Since vertebral cryptococcosis seems not to ha...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1985-06-01 00:00:00
abstract:UNLABELLED:Accurate preoperative templating can facilitate precise, efficient, and reproducible total knee arthroplasty. We determined whether acetate templating accurately predicted knee implants used and compared the accuracy of digital templating. Preoperative planning was performed on 50 consecutive preoperative ra...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:2007-11-01 00:00:00
abstract:UNLABELLED:We describe the condylar cutoff sign, a radiographic sign in knees with a discoid lateral meniscus, for diagnosis of complete discoid meniscus. We retrospectively reviewed tunnel-view radiographs of 100 patients (100) knees including 50 with complete discoid lateral meniscus and 50 with normal menisci. All p...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-008-0447-5
更新日期:2009-05-01 00:00:00
abstract::In a series of delayed repair in 8 instances of avulsion fracture of the tibial attachment of the posterior cruciate ligament, 6 were isolated avulsion fractures of the tibial attachment of the posterior cruciate ligament and 2 were associated with the fractures of the tibial condyle. Staple fixation was used exclusiv...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1979-09-01 00:00:00
abstract::The objective of lower extremity amputation surgery is to create a viable, functional residual limb to maximize patient mobility and independence. When part or all of the forefoot is lost to trauma, infection or gangrene, and the hindfoot is viable, every attempt should be made to preserve as much foot function as pos...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/00003086-199904000-00012
更新日期:1999-04-01 00:00:00
abstract::This CORR Insights is a commentary on the article ''Ultrasound as a first line test in the diagnosis of carpal tunnel syndrome: a cost effectiveness analysis" by John R Fowler and colleagues available at DOI 10.1007/s11999-012-2662-3 . ...
journal_title:Clinical orthopaedics and related research
pub_type: 评论,杂志文章
doi:10.1007/s11999-012-2663-2
更新日期:2013-03-01 00:00:00
abstract::Aneurysmal bone cyst is a rare nonneoplastic expansile osteolytic bone lesion of unknown etiology. To the best of the authors' knowledge, no epidemiologic study concerning its incidence has been reported. The authors performed a retrospective, population based analysis of 94 patients with primary aneurysmal bone cyst ...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章,评审
doi:
更新日期:1999-06-01 00:00:00
abstract:BACKGROUND:Ankle arthrodesis may be achieved using the Ilizarov method. Comorbidities, such as diabetes, Charcot neuroarthropathy, osteomyelitis, leg length discrepancy, and smoking, can make an ankle fusion complex and may be associated with lower rates of healing. QUESTIONS/PURPOSES:We asked if (1) smoking and other...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1007/s11999-012-2470-9
更新日期:2012-10-01 00:00:00
abstract:UNLABELLED:Treatment of patellofemoral osteoarthritis in young patients is a challenge for orthopaedic surgeons. Concern about loosening and wear in active young people render arthroplasty more suitable for older patients. Osteochondral allografts may be a good alternative, but reports of experience with such grafts in...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:10.1097/01.blo.0000201152.98830.ed
更新日期:2006-03-01 00:00:00
abstract::In order to determine the effects of parathyroid hormone on bone formation, mean wall thickness (MWT) of trabecular bone packets was measured on transilial undecalcified bone biopsies from 26 patients (14 females and 12 males) with primary hyperparathyroidism (HPT). Mean value of MWT in HPT patients (45.2 +/- 5.8 micr...
journal_title:Clinical orthopaedics and related research
pub_type: 杂志文章
doi:
更新日期:1982-01-01 00:00:00