Abstract：
:To investigate the role of blood supply in the pathogenesis of idiopathic osteonecrosis of the femoral head, superselective angiography of the medial circumflex artery was performed. Sixteen hips with early stage osteonecrosis diagnosed by bone scintigraphy were studied, as were 22 contralateral normal hips (from unilateral cases) and 22 roentgenographically and scintigraphically normal hips in patients who had been administered corticosteroids. All hips demonstrated abnormal superior retinacular arteries in the extraosseous area, and small arteries penetrated 14 hips with early stage osteonecrosis. Abnormal findings were noted in 17 of 22 contralateral normal hips and in 20 of 22 normal hips with corticosteroid administration. Follow-up roentgenographic analysis showed that the hips with small arterial penetration most often developed osteonecrosis. There were two important findings: (1) The blood supply of the superior retinacular arteries from the extraosseous site was impaired. (2) Revascularization was observed not only in hips with early stage osteonecrosis but also in contralateral normal hips and normal hips with corticosteroid therapy. Osteonecrosis is not necessarily a consequence of a single episode of impairment of blood supply of the femoral head but that of a repetitive episode if interruption of revascularization.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Atsumi T,Kuroki Ysubject
Has Abstractpub_date
1992-04-01 00:00:00pages
22-30issue
277eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract：:Osteonecrosis of the femoral head developed in three patients during pregnancy. There were no demonstrable predisposing factors. The symptoms were first noted during the last trimester and persisted following delivery. Results of examination, radiography, and scanning were consistent with a diagnosis of osteonecrosis,...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1984-05-01 00:00:00
abstract：:Osteochondritis dissecans of the capitellum produces an area of focal necrosis that may result in a potentially unstable relationship between the capitellum and the radial head. Seven patients with developmental instability of the radial head secondary to osteochondritis dissecans of the capitellum treated between 198...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199705000-00006
更新日期：1997-05-01 00:00:00
abstract：:Thirty-two rabbits were used experimentally to study the effect of cortisone in bone, lungs, kidneys, and liver. Cortisone does induce abnormal increases in the serum cholesterol, fatty metamorphosis of the liver and the fatty emboli of the subchondral vessels of the femoral heads. Clofibrate therapy appeared to modif...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
abstract：:Seventy-seven patients treated by chymopapain and laminectomy were compared before, and 6 and 14 weeks after, treatment. A standardized, multidimensional scale of low back pain providing scores on 7 independent dimensions of sensory and affective discomfort and one measure of intensity were used. Fourteen weeks after ...
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：:Synovial tissues taken from 13 cases of synovial chondromatosis (SC) were examined by light and electron microscopy. In three of the 13 cases, early cellular changes were observed by electron microscopy. Most of the foci were independently situated within an accumulation of fine, homogenous chondroid matrix in the sub...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-03-01 00:00:00
abstract：:In a retrospective study, 14,731 menisci were examined to determine the incidence of discoid medial and lateral menisci. Of 8040 medial menisci, ten (0.12%) were discoid. Of 6691 lateral menisci, 102 (1.5%) were discoid. Only 22 discoid medial menisci have been reported in the medical literature. The previously report...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1982-08-01 00:00:00
abstract：:Of 104 patients with arthrogryposis multiplex congenita treated between 1952 and 1982, 74 had significant knee contractures, instability, or recurvatum. The minimum follow-up period was two years. Nonoperative treatment modalities included physical therapy, bracing, and serial casting in 43 patients (78 knees). Thirty...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1985-04-01 00:00:00
abstract：BACKGROUND:Numerous cementless femoral stem design variations are in clinical use. Because initial implant instability and micromotion are associated with aseptic loosening of the femoral component, migration analysis provides an early assessment of implant survivorship. QUESTIONS/PURPOSES:We determined the (1) migrat...
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
abstract：:Movement between screw threads and bone inhibits bone formation, revascularization and remodeling of dead bone. Movement causes the screw to become enveloped by fibrous tissue in response to necrosis and resorption of adjacent dead cortical bone. This results in a radiologically discernible radiolucent "halo" about th...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-197509000-00032
更新日期：1975-09-01 00:00:00
abstract：:The presence of a "pseudocapsule," composed of an inner compression zone and outer reactive zone, is a frequent finding in the periphery of osteosarcoma. Morphologic and immunohistochemical methods were used to determine the type of inflammatory cell most closely related to the formation of this pseudocapsule. Six and...
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：:Twenty knee dislocations in 19 patients (one bilateral) occurred over a period of 20 years. The age range was 21 to 65 years, with an average age of 40.8 years. There were two popliteal artery and eight peroneal nerve injuries in the group. All patients were managed by early closed reduction at the scene of the accide...
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：:Since the inception of adjuvant chemotherapy for osteogenic sarcoma (OS), 25 patients were treated for telangiectatic osteogenic sarcoma (TOS) from 1973 through 1980. This represented 12% of all patients with primary OS of an extremity seen during this time period. Tumors that demonstrated only focal areas of TOS with...
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：BACKGROUND:The literature suggests lateral unicompartmental knee arthroplasties are associated with low revision rates. However, there are fewer reports describing techniques for lateral unicompartmental arthroplasty and whether technique influences ROM and function compared to reports for medial unicompartmental arthr...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-2005-9
更新日期：2012-01-01 00:00:00
abstract：:The painful arc syndrome of the shoulder is a manifestation of rotator cuff tendinitis associated with tenosynovitis of the long head of the biceps under and just distal to the transverse humeral ligament. Eighty-nine patients with clinical signs of the painful arc syndrome were proven to have an associated biceps ten...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1982-03-01 00:00:00
abstract：:In 15 normal adults an advanced biomechanical analysis of walking patterns at slow, natural, and fast cadences showed that the ankle had two mechanical power phases: a negative work phase during weight acceptance, followed by a dominant burst of positive work at push-off. The knee had four power phases: a negative wor...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-05-01 00:00:00
abstract：:This study evaluated the quality and quantity of osseointegration of two thicknesses of hydroxyapatite coating on press-fit, porous-coated titanium implants in a canine hip model. In 12 dogs, titanium press-fit porous-coated prostheses were implanted. The stems had a 50-microm thickness hydroxyapatite coating, 100-mic...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200111000-00058
更新日期：2001-11-01 00:00:00
abstract：BACKGROUND:Total joint arthroplasty (TJA) has been identified as a procedure with substantial variations in inpatient and postacute care payments. Most studies in this area have focused primarily on the Medicare population and rarely have characterized the younger commercially insured populations. Understanding the inp...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-017-5444-0
更新日期：2017-11-01 00:00:00
abstract：:Osteochondral allograft transplantation is a well-accepted treatment for articular cartilage damage. However, chondrocyte viability declines during graft storage, which may compromise graft performance. We first tested the hypothesis that the composition of commonly used storage media affects the viability of articula...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0302-8
更新日期：2008-08-01 00:00:00
abstract：BACKGROUND:During lower limb lengthening, poor bone regeneration is a devastating complication. Several local or systemic applications have been used to promote osteogenesis, and biologic stimulations are gaining attention, but their utility has not been proven in this setting. QUESTIONS/PURPOSES:In patients undergoin...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,随机对照试验
doi：10.1007/s11999-014-3548-3
更新日期：2014-12-01 00:00:00
abstract：:Osteoblastic and chondroblastic (i.e., osteogenic) cells belong to the stromal cell system, which is associated with bone marrow, and bone and is separate from the hematopoietic stem-cell system. Stromal stem cells are capable of producing reticular, fibroblastic, osteogenic, and adipose stromal lines. Marrow-derived ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1990-03-01 00:00:00
abstract：:Fetal tendons and skin heal regeneratively without scar formation. Cells isolated from these fetal tissues exhibit enhanced cellular migration and collagen production in comparison to cells from adult tissue. We determined whether fetal and adult fibroblasts isolated from the anterior cruciate ligament (ACL), a tissue...
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：:Although the etiology of scoliosis is multifactorial, genetic factors play an important role. Recent linkage studies on familial idiopathic scoliosis revealed multiple putative predisposition loci. A genetic association study is complementary to linkage studies in defining the genetic basis of complex traits of diseas...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/BLO.0b013e3180986dc2
更新日期：2007-09-01 00:00:00
abstract：:Radiotherapy used in the treatment of bone and soft tissue sarcomas in pediatric patients often results in undesirable growth plate damage. Radioprotectants may hold promise in the selective protection of growth plate tissue in this setting. In an animal model, the hypothesis tested was that pentoxifylline, selenium, ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000131247.18112.0f
更新日期：2004-09-01 00:00:00
abstract：:Considering the often poor results obtained with conventional methods of bone grafting in the treatment of congenital pseudarthrosis of the tibia, the free vascularized bone graft may offer the best chance of cure to these unfortunate patients. A segment of rib or fibula may be harvested with its vascular supply and u...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1982-06-01 00:00:00
abstract：BACKGROUND:To improve ankle stability in patients who have experienced an ankle sprain with residual symptoms of instability and/or objective joint laxity, external supports (such as taping, bracing, and orthotic insoles) are used sometimes. However, available randomized trials have disagreed on whether restraints impr...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,meta分析
doi：10.1097/CORR.0000000000000946
更新日期：2020-02-01 00:00:00
abstract：BACKGROUND:Although use of nonsteroidal antiinflammatory drugs and low-dose irradiation has demonstrated efficacy in preventing heterotopic ossification (HO) after THA and surgical treatment of acetabular fractures, these modalities have not been assessed after traumatic blast amputations where HO is a common complicat...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/CORR.0000000000000594
更新日期：2019-03-01 00:00:00
abstract：:Limb lengthening is not uncommon after total hip replacement and may cause subjective problems for patients. We have studied 150 total hip replacements to investigate the operative change in limb length. A radiologic evaluation is used and is shown to be accurate. One hundred forty-four limbs were lengthened an averag...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1978-07-01 00:00:00
abstract：:To combat the most common and most serious cause of mechanical failure of total hip arthroplastics, namely loosening, a method of improving the insertion of methacrylate is presented, called the cement fixation system. Using the cement gun with the keying hole seal, the methacrylate is pressure injected into the keyin...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1982-04-01 00:00:00
abstract：:Varus derotational osteotomy of the femur is designed to correct coxa valga and femoral anteversion which contribute to progressive hip subluxation and dislocation in certain cases of cerebral palsy. By the application of a careful preoperative evaluation, vigorous postoperative rehabilitation and treatment of complic...
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：BACKGROUND:Although aortic balloon occlusion has been shown to reduce blood loss during sacral tumor resections, it has not been validated in larger sacral tumors involving the lower lumbar spine. If such an approach were shown to be associated with less blood loss, it might aid the tumor surgeon in resecting these dif...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999.0000000000000053
更新日期：2018-03-01 00:00:00
