Abstract：
:Rigid body mechanics with computer data acquisition and analysis techniques were used to determine the three-dimensional motions of any point on the tibial component of a total knee arthroplasty. Three stem configurations were compared: (1) no stem; (2) short stem (40 mm); and (3) long stem (75 mm). In addition, three loading conditions were analyzed for each stem configuration: (1) central loading; (2) posterior loading; and (3) medial loading. The longer stem implants were associated with increased micromotion, especially under eccentric loading. Cemented implants seemed to have more stable fixation, compared with noncemented implants. It was thought that the increased motion was secondary to a toggling of the implant under load, secondary to uneven medullary cortical contact. Overall, the results indicated that short and long stems do not enhance initial fixation with cemented or cementless implantation in routine knee arthroplasty.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Stern SH,Wills RD,Gilbert JLsubject
Has Abstractpub_date
1997-12-01 00:00:00pages
44-52issue
345eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract：:There are three phases in the treatment of open fractures and infected pseudarthroses by the Hoffmann external fixator. During the initial phase a careful surgical debridement is performed in the bony tissues, and the external fixator is applied in a manner appropriate to the type and level of the lesion site (double-...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-11-01 00:00:00
abstract：:The effects of polymethylmethacrylate (PMMA) on DNA, protein, and sulfated-proteoglycan synthesis by rabbit articular chondrocytes were observed in monolayer cultures. PMMA pellets in ratios of 1:1 and 1:2 (liquid monomer:powder) significantly reduced [3H]thymidine incorporation into DNA during the first 24 h of cultu...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1984-10-01 00:00:00
abstract：:The rationale for and experience with the use of a hemispherical, cementless, microporous socket (Harris-Galante prosthesis) are presented as an approach to acetabular revision arthroplasty. Advantages are noted in preservation of existing bone, ease of rigid fixation, and bone grafting with either lyophylized particl...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
abstract：:Reported herein is a rare case of a patient with a pathologic fracture through a cyst in the femoral neck that resulted in avascular necrosis of the femoral epiphysis. This type of necrosis is commonly understood to follow displaced fractures of the femoral neck in children, but has also been reported to follow undisp...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1994-07-01 00:00:00
abstract：:The evaluation and treatment of elbow injuries in throwing athletics has been the topic of numerous articles. The intense and repetitive stresses placed on the elbow may, in rare instances, produce undisplaced olecranon stress fractures. Two cases are presented and the literature is reviewed to propose that the fractu...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1992-05-01 00:00:00
abstract：:This article presents four recent areas of research in biomechanics with clinical application. The first area describes quantification of the functional condition of the lower extremity using biomechanical parameters based on theoretical assumptions for a new mathematical model of walking. The second area describes th...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1991-05-01 00:00:00
abstract：:Two extracts of bovine bone, bone morphogenetic protein (BMP) supplied by the UCLA Bone Research Laboratory, and osteogenic factor extract (OFE) supplied by the industrial group Celtrix Pharmaceuticals, were tested for the ability to transform embryonic skeletal muscle into cartilage. Skeletal muscle was placed into o...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1994-02-01 00:00:00
abstract：:This study compares biomechanical characteristics of interference screw fixation to "postfixation" (sutures tied over cancellous screw and washer) of bone-patellar tendon-bone grafts in porcine anatomic specimen knees. Maximum pull-out strength (ultimate failure load), displacement of the bone graft at 110 N of force,...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1994-03-01 00:00:00
abstract：BACKGROUND:The main static stabilizers of the medial knee are the superficial medial collateral and posterior oblique ligaments. A number of reconstructive techniques have been advocated including one we describe here. However, whether these reconstructions restore function and stability is unclear. DESCRIPTION OF TEC...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-2061-1
更新日期：2012-03-01 00:00:00
abstract：:Theoretical consideration of the factors involved in maintaining vascular equilibrium and experimental evidence in animals and man indicate that at high tissue pressures there may be a sharp decline in blood flow and, in certain situations, complete cessation of blood flow even at tissue pressures below mean arterial ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-197511000-00004
更新日期：1975-11-01 00:00:00
abstract：:Three patients with Paget's disease of bone were treated by disodium etidronate (EHDP) without interruption during periods of 18 to 30 months. In one case the daily dose was also unduly high (approximately equal to 18 mg/kg/day). A moderate to conspicuous diminution of the renal function was observed in all cases. The...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1986-06-01 00:00:00
abstract：:Transfer of a graft taken from the iliac crest apophysis of 48 immature dogs was studied as a means of repairing an epiphysiodesis constituting more than 50% of the growth plate area. Four groups of dogs were studied. In Group I the graft was pedicled on the superficial circumflex iliac vessels and reimplanted in situ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-11-01 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：:The treatment of the dislocated radial head in a late Monteggia lesion remains a matter of controversy. Annular ligament reconstruction using a strip of triceps tendon is a commonly used technique. Although most published series report good and excellent results, the overall complication rate of this procedure is not ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：:The age- and sex-specific incidence of hip fractures is central Norway is reported for the periods of 1972-1973 and 1983-1984. The incidence of hip fracture for women had increased by approximately 22% in the intervening period. The region under investigation was subdivided into urban, semirural, and rural areas. The ...
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：BACKGROUND:Compressive osseointegration is a promising modality for limb salvage in distal femoral oncologic tumors. However, few studies have explored short-term survival rates in a large patient cohort of distal femur compressive endoprostheses or highlighted the risk factors for spindle failures. QUESTIONS/PURPOSES...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-016-4839-7
更新日期：2016-07-01 00:00:00
abstract：:This study was designed to evaluate the efficacy of the Holmium:YAG laser for performing lateral release and medial joint capsular tightening intracapsularly and to compare the efficacy of the laser versus a scalpel blade for performing a lateral release by performing arthroscopic surgery on 29 caprine patellofemoral ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1998-11-01 00:00:00
abstract：BACKGROUND:Locking plate fixation of proximal humeral fractures improves biomechanical stability. It has expanded the indications of traditional open reduction internal fixation and become increasingly common for treating unstable, displaced proximal humeral fractures. Despite improved stability it is unclear whether t...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-1935-6
更新日期：2011-12-01 00:00:00
abstract：:Using a titanium alloy femoral prosthesis (STH Zimmer) and an ultra high molecular weight polyethylene acetabular cup with a posterior surgical approach to the hip joint, 237 consecutive total hip arthroplasties in 215 patients were performed between December 1975 and May 1977. The preliminary results and early postop...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1979-10-01 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：: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：UNLABELLED:Acetabular component orientation during total hip arthroplasty affects dislocation, range of motion, polyethylene wear, pelvic osteolysis, and component migration. New total hip arthroplasty navigation systems have been introduced to avoid the errors reported after acetabular component orientation using a ma...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000201165.82690.f8
更新日期：2006-04-01 00:00:00
abstract：UNLABELLED:Giant cell tumors of bone are sometimes locally aggressive and may metastasize, although uncommonly. We attempted to identify associations of clinical and histopathologic parameters with metastasis, the long-term outcome with metastases, and the best treatment. We identified distant metastases in 24 of 470 p...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-0966-8
更新日期：2010-03-01 00:00:00
abstract：:Primary total hip arthroplasty using an uncemented AML total hip prosthesis (trispiked cup and a 4/5 porous coated stem) was performed in 50 patients (52 hips). The average age of the patients at the time of surgery was 47.6 years (range, 19-68 years), and the diagnosis was osteonecrosis of the femoral head in 18 hips...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199903000-00018
更新日期：1999-03-01 00:00:00
abstract：:We report a case of meralgia paresthetica occurring in an amateur baseball pitcher who experienced inguinal pain and dysesthesia in the anterolateral thigh during pitching practice. The lateral femoral cutaneous nerve was pushed up by the iliac muscle to the inguinal ligament at the sharp ridge of its fascia and enshe...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0307-3
更新日期：2008-09-01 00:00:00
abstract：:Although peripheral metastases of many malignancies to bone are common, metastases to the hand and carpus are rare. This is the first report of a silent primary malignancy of the lung presenting as a metastasis to the carpal navicular bone. Only eight instances of carpal bone metastases secondary to all tumor sources ...
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：BACKGROUND:More than 100 MRIs per 1000 inhabitants are performed in the United States annually, more than almost every other country. Little is known regarding the cost of obtaining an MRI and factors associated with differences in cost. QUESTIONS/PURPOSES:By surveying all hospital-owned and independent imaging center...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-016-5181-9
更新日期：2017-03-01 00:00:00
abstract：:In the treatment of congenital dislocation of the hip, reduction must be obtained and maintained to provide the proper stimulus for resumption of normal hip joint growth and development. Subluxation and avascular necrosis must be avoided, as degenerative joint disease is certain to occur. Acetabular dysplasia leads to...
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：:As early as 1956, laboratory investigations into the carcinogenicity of modern dental and orthopaedic alloys were undertaken. Such studies were prompted by the observation that workers, particularly in nickel and chromate refining, had increased risks of nasal and lung tumors. For the past 25 years, sporadic case repo...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/00003086-199608001-00023
更新日期：1996-08-01 00:00:00
abstract：:Revision anterior cruciate ligament surgery can be very demanding. Graft selection for revision surgery is a pivotal part of this procedure. Often, the usual first choice of tissue is not available. Therefore, familiarity with alternative graft sources and understanding their advantages and disadvantages is imperative...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/00003086-199604000-00008
更新日期：1996-04-01 00:00:00
