Abstract：
:To determine the vascular architecture of nontraumatic avascular necrosis of the femoral head (ANFH), 38 femoral heads procured from 31 ANFH patients were studied by microangiographic and histologic methods. Microangiography showed that the head was consistently stratified into three zones: the normal vascular, the reparative vascular, and the avascular. Microangiographic abnormalities were closely correlated with the histologic changes in each zone. The extent of the necrotic area proved to depend on the extent and number of involved intraosseous nutrient arteries. Circumscribed necrosis accompanied interruption of the lateral epiphyseal arteries in their intra-capital portion. Extensive necrosis resulted from multiple vascular involvement, which included not only the lateral epiphyseal arteries, but also the superior and inferior metaphyseal arteries. Histologic examination of different levels of the nutrient arteries revealed many intraosseous pathologic vascular changes in apposition to the ischemic episode of the femoral head. Interruption of the blood supply causing ANFH occurs in the intracapital arteries probably because of vascular wall damage, and the extent of necrosis depends on the number of the involved nutrient arteries and their proximity to the intracapital site of origin.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Ohzono K,Takaoka K,Saito S,Saito M,Matsui M,Ono Ksubject
Has Abstractpub_date
1992-04-01 00:00:00pages
79-88issue
277eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract：:Heat shock proteins (HSPs) are often upregulated following oxidative and other forms of stress. Based on reports of excessive apoptosis in torn supraspinatus tendon and mechanically loaded tendon cells, we hypothesized heat shock proteins may be present in rodent and human models of tendinopathy due to their central r...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-008-0265-9
更新日期：2008-07-01 00:00:00
abstract：BACKGROUND:Alpha defensin was proposed as a new biomarker in synovial fluid for the diagnostic workup of failed joint prostheses. To our knowledge, no comparative study of the performance of the quantitative enzyme-linked immunosorbent assay (ELISA) and qualitative lateral flow alpha defensin test has been reported. Q...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/CORR.0000000000000336
更新日期：2018-08-01 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：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：:The etiology of spondylolisthesis is multiple according to the type of the vertebral slipping. In fact all the following basic pathological processes may be involved: congenital malformation of the upper sacrum in the dysplastic spondylolisthesis; growth dysplasia of the vertebral arch in the "isthmic spondylolisthesi...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1976-06-01 00:00:00
abstract：:It has been suggested that apparent wear damage in highly cross-linked polyethylene acetabular liners can be removed with subsequent remelting of retrieved liners. To test this hypothesis, we remelted liners that had been previously tested under controlled laboratory conditions and that had experienced nonzero wear ra...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/BLO.0b013e318157601c
更新日期：2007-12-01 00:00:00
abstract：:Two hundred and eight skin knives and 374 deep knives were evaluated in 153 clean orthopedic cases with and without a horizontal wall-less laminar air-flow system. There was no statistical difference in contamination frequency between the skin and the deep knives with and without the laminar air-flow. However, the kni...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-197505000-00024
更新日期：1975-05-01 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：: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：:The initial experience with the Freeman-Swanson (ICLH) total knee arthroplasty (1971-1975) led to changes of tibial component size, alignment, instruments, and surgical technique in 1975. Certain patients in this initial series, however, have shown excellent long-term (5 1/2-9 years) results. In patients with overall ...
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：:Subspecialty certification in hand surgery was instituted in 1989 by the collaborative efforts of the American Boards of General Surgery, Plastic Surgery, and Orthopaedic Surgery. Candidates must be certified by their parent board and have demonstrated qualifications in hand surgery beyond those expected of other Boar...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/01.blo.0000224041.77215.b6
更新日期：2006-08-01 00:00:00
abstract：:Bisphosphonate treatment has been shown to decrease endosteal bone formation and increase periosteal bone apposition in the rat tibial diaphysis. This study tested the hypothesis that the increase in periosteal apposition is a compensatory attempt to maintain skeletal mass appropriate for the mechanical load. Twenty-f...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-05-01 00:00:00
abstract：:Fingertip amputations are the most common type of amputation injury in the upper extremity. These injuries are either seen in the emergency room or in an office setting. These lesions are very frequent and require precise wound care for optimal results. The longer finger and the thumb, being the most distal and indepe...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/00003086-199808000-00008
更新日期：1998-08-01 00:00:00
abstract：:Residual coxa vara is a common complication of femoral neck fracture in a child. Factors favoring the development of this complication are delayed reduction and avascular necrosis. The present case report is a 10-year follow-up of spontaneous correction of traumatic coxa vara in a child. This is of interest because re...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1976-05-01 00:00:00
abstract：BACKGROUND:Treatment of giant cell tumor of bone (GCT) often is complicated by local recurrence. Intralesional curettage is the standard of care for primary GCTs. However, there is controversy whether intralesional curettage should be preferred over wide resection in recurrent GCTs. QUESTIONS/PURPOSES:We investigated ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-010-1560-9
更新日期：2011-04-01 00:00:00
abstract：:To determine whether inappropriate surgical procedures based on an initial misdiagnosis affected recurrence and survival rates, we retrospectively reviewed the surgical treatment and results of 117 patients with high-grade osteosarcomas treated from January 1, 1990 to December 31, 2000. Nine patients had intralesional...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000229314.58878.88
更新日期：2006-11-01 00:00:00
abstract：BACKGROUND:Compared with conventional polyethylene, first-generation highly cross-linked polyethylenes have low wear, but controversy exists regarding their reduced mechanical strength and/or retained free radicals. Second-generation highly cross-linked polyethylenes have been developed to reduce wear, maintain mechani...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,多中心研究
doi：10.1007/s11999-011-2177-3
更新日期：2012-06-01 00:00:00
abstract：:The standard of care for femoral fractures is an intramedullary nail, placed in an antegrade approach. This has produced high rates of healing and low complication rates. The use of retrograde nailing for femoral shaft fractures is a relatively new technique, previously described as an extraarticular approach. Forty-o...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199611000-00013
更新日期：1996-11-01 00:00:00
abstract：:The micromovements of 18 ribbed femoral prostheses were measured for two years postoperatively. Repeated roentgen stereophotogrammetric examinations (RSA) were used to measure distal migration of the center of the prostheses and movements of the prosthetic hump and tip. During the first six postoperative months, an in...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-02-01 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：:The prerequisites for normal gait are: (1) stability in the stance phase of gait, (2) clearance of the foot in the swing phase, (3) proper foot preposition in swing, and (4) an adequate step length. In the stance phase, the knee provides shock absorption and energy conservation; in the swing phase, it allows foot clea...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-04-01 00:00:00
abstract：:Reconstruction of massive proximal tibial defects caused by failed cemented total knee arthroplasty (TKA) was evaluated using cancellous allograft and a rigidly fixed tibial component. Twenty patients with massive tibial defects requiring revision TKA were operated on using this technique from December 1984 to Decembe...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1989-11-01 00:00:00
abstract：:Although some patients experience a success rate greater than 90% after total hip arthroplasty, others require revision surgery within 5 years after the index procedure. The purpose of our study was to analyze the failure mechanisms in patients who had revision surgery within 5 years after index total hip arthroplasty...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000203484.90711.52
更新日期：2006-06-01 00:00:00
abstract：:The factors which determine the rate and amount of acetabular growth in congenital dislocation of the hip are ill-understood. A prospective radiological study has been devised in order to assess the influence of the age of congruity, femoral anteversion and neck/shaft angles on acetabular growth. To be included, the c...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1976-09-01 00:00:00
abstract：BACKGROUND:Revision of the infected hip arthroplasty with major bone loss is difficult. Attempts to restore bone stock with structural allograft are controversial. QUESTIONS/PURPOSES:We assessed the (1) reinfection rate; (2) rerevision rate; (3) radiographic graft union, resorption, and implant migration; (4) Harris h...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-010-1673-1
更新日期：2011-04-01 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：:Dislocation of the cervicothoracic junction, between the C7 and T1 vertebrae, occurred in a 46-year-old inebriated man. The C7--T1 junction is difficult to visualize on roentgenographs even when the upper extremities are pulled down. This injury is uncommon and often undiagnosed immediately after injury (Fig. 7). The ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1980-07-01 00:00:00
abstract：:Since 1941, distal clavicle excision has been a reliable technique for alleviating pain caused by acromioclavicular joint arthritis. Disadvantages of the procedure include permanent shoulder weakness, a lengthy recovery time ranging from weeks to months before useful function of the extremity returns, and lack of cosm...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1994-04-01 00:00:00
abstract：:The practice of medicine in rural Arizona has changed remarkably in 25 years. Although the delivery of care to the people of the San Carlos Apache Tribe has many challenges including geographic isolation and cultural differences, there are many rewards, such as knowing that some people would not receive care if the or...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200203000-00016
更新日期：2002-03-01 00:00:00
abstract：:Thirty-seven hips with Ficat Stage II, III, or early IV osteonecrosis were treated with hemiresurfacing. The purpose of this study is to analyze specifically the clinical and radiographic results of patients who had hemiresurfacing to refine the indications for the procedure and identify factors substantially affectin...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200104000-00018
更新日期：2001-04-01 00:00:00
