Abstract：
:Bone remodeling after cementless total hip arthroplasty was evaluated by dual energy x-ray absorptiometry in a longitudinal study of 32 hips. After insertion of a fully porous surface anatomic stem made of cobalt chromium, bone mineral density was analyzed until at least 2 years postoperatively. Bone remodeling was evaluated in terms of regional bone density changes in the seven adjacent periprosthetic zones as well as the global change in bone density distribution over the entire periprosthetic area. At 12 months after the operation, the averaged regional bone mineral density in all seven zones showed a rapid decrease, ranging from 9% to 24% of the bone mineral density present at 2 weeks postoperatively. Thereafter, the bone density change appeared to be stabilized. The global change in the bone density distribution was expressed as two summarizing statistical indexes derived from principal component analysis: the first index represents the change of average bone mineral density over the entire periprosthetic area, and the second represents the severity of bone mineral density decrease in the proximal area versus the distal area. The second index proved that more bone density reduction occurred in the proximal area, but this was variable among patients and correlated significantly with the stem size and the initial bone mineral density in the distal part of the periprosthetic area. This longitudinal dual energy x-ray absorptiometry study suggests that a large part of the bone remodeling after cementless hip arthroplasty ceases within 1 year postoperatively, and stem size and the initial bone density around the distal portion are important considerations for predicting the proximal bone density decrease during the early rapid remodeling period.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Nishii T,Sugano N,Masuhara K,Shibuya T,Ochi T,Tamura Sdoi
10.1097/00003086-199706000-00017subject
Has Abstractpub_date
1997-06-01 00:00:00pages
121-31issue
339eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract：:A technique of computed tomography with intravenous contrast has proven useful in the differentiation between osteoid osteoma and other similar appearing lucent lesions of bone in 6 cases. The clinical evaluation of benign appearing radiolucent lesions of long bones has been greatly improved by the use of modern imagi...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199606000-00030
更新日期：1996-06-01 00:00:00
abstract：:This study was designed to determine the influence of laxity on clinical function after knee replacement. Using a recently developed computerized method, anteroposterior laxities were measured in 29 Insall-Burstein posterior stabilized, 25 Kinemax Condylar (posterior cruciate retaining), and 10 Oxford bicompartmental ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1994-08-01 00:00:00
abstract：:Two patients with severe hip pain proved to have buttock claudication resulting from isolated stenosis of the hypogastric artery. This diagnosis may be elusive if distal pulses are palpable, directing the clinician's suspicion away from vascular pathology. Diagnosis requires angiography. The patients were successfully...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-11-01 00:00:00
abstract：BACKGROUND:The most important objective of clinical classifications of slipped capital femoral epiphysis (SCFE) is to identify hips associated with a high risk of avascular necrosis (AVN)--so-called unstable or acute slips; however, closed surgery makes confirmation of physeal stability difficult. Performing the capita...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2339-y
更新日期：2012-08-01 00:00:00
abstract：:Lead markers were placed on various osseous structures of the talus and calcaneus in fresh amputation specimens to analyze the radiographic anatomy of the hindfoot. Analysis of the talocalcaneal articulations revealed that only the central one-third of the posterior subtalar joint can be visualized on the lateral proj...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-07-01 00:00:00
abstract：:The case report presents a nine-year-old child with an osteoid osteoma of the femoral neck, simulating an inflammatory synovitis. Osteoid osteoma is a common benign bone tumor. However, when intracapsular lesions occur they may pose a diagnostic challenge. Nonspecific clinical signs and symptoms, such as inflammatory ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1987-10-01 00:00:00
abstract：BACKGROUND:Hip fractures in the elderly are followed by considerable risk of functional decline and mortality. QUESTIONS/PURPOSES:The purposes of this study were to (1) explore predictive factors of functional level at discharge, (2) evaluate 1-year mortality after hip fracture compared with that of the general popula...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-013-2955-1
更新日期：2013-08-01 00:00:00
abstract：:Treatment options for giant cell tumors of the distal tibia include curettage and cement packing, curettage and bone grafting, or resection and reconstruction for aggressive tumors. Curettage of aggressive tumors often leads to severe bone loss requiring reconstruction. Allograft and autograft may be effective options...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-1097-y
更新日期：2010-06-01 00:00:00
abstract：BACKGROUND:High hip center reconstructions, used in revision and complex primary THAs, rely on pelvic bone stock at least 35 mm above the anatomic teardrop. However, the technique does not restore normal hip biomechanics and controversy exists regarding acetabular implant survival. Previous reports document a wide rang...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2574-2
更新日期：2012-12-01 00:00:00
abstract：:Culture selected and expanded osteoblastic cells may be able to be reintroduced into massive skeletal defects to accelerate cell mediated regeneration of skeletal tissues, especially in bone ingrowth in total joint replacement, fracture healing, and osteoporosis. In vitro osteogenic cell culture is a useful model in s...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1998-03-01 00:00:00
abstract：:Pseudoallescheria boydii, a fungus often isolated from soil, commonly causes a mycetoma. Successful treatment involves resection of the infected area and appropriate antifungal chemotherapy. In vitro sensitivity of P. boydii to miconazole is usually demonstrated, but resistance to amphotericin B and 5-fluorocytosine i...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1987-02-01 00:00:00
abstract：:The use of a peritoneal catheter enhances diagnosis using arthroscopy by affording a clear visibility of the knee joint. The accuracy in diagnosis is significantly enhanced using this method of irrigation. No better method of irrigation is available for cases of acute knee joint injuries. ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1977-10-01 00:00:00
abstract：BACKGROUND:Radial head alignment is the key to determine elbow reduction after treatment of subluxations or Monteggia fractures. The radiocapitellar ratio (RCR) quantifies the degree of subluxation, by evaluating radial head alignment with the capitellum of the humerus; this ratio is reproducible when measured on true ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-013-3027-2
更新日期：2013-08-01 00:00:00
abstract：:An extraarticular ligament reconstruction to stabilize the painful, hypermobile trapeziometacarpal (basal) joint by routing a portion of the flexor carpi radialis (FCR) through the thumb metacarpal has been performed in 25 "prearthritic" (Stage I) and 17 minimally involved (Stage II) basal joints. At an average follow...
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：:We investigated the effect of shockwaves on cells explanted from normal human periosteum to study the potential mechanisms of their responses and to determine suitable treatment settings. The cells were subjected to one shockwave treatment with systematic combinations of energy intensities (range, 0.05-0.5 mJ/mm) and ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200509000-00042
更新日期：2005-09-01 00:00:00
abstract：:Tumoral calcinosis is the deposition of calcium crystals and salts in the periarticular soft tissues. It commonly is seen as a complication of renal dialysis or in patients with a hereditary disposition. Occasionally, it is seen as an isolated condition with no known cause. Tumoral calcinosis usually affects adults an...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：2005-07-01 00:00:00
abstract：:The purpose of this study was to quantify precisely aging-induced changes in skeletal perfusion and bone mechanical properties in a small rodent model. Blood flow was measured in conscious juvenile (2 months old), adult (6 months old), and aged (24 months old) male Fischer-344 rats using radiolabeled microspheres. The...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200203000-00036
更新日期：2002-03-01 00:00:00
abstract：:This study investigated 11 patients with localized pigmented villonodular synovitis of the knee that was diagnosed and treated by arthroscopic technique. There were six male and five female patients between the ages of 15 and 59 years (mean, 34.6 years). Seven patients reported extension limitation without joint line ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200010000-00026
更新日期：2000-10-01 00:00:00
abstract：BACKGROUND:Hip fractures are a major public health concern. For displaced femoral neck fractures, the needs for medical services during hospitalization and extending beyond hospital discharge after total hip arthroplasty (THA) may be different than the needs after THA performed for osteoarthritis (OA), yet these differ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-016-4868-2
更新日期：2017-02-01 00:00:00
abstract：:The options for reconstruction after excision of skeletal tumors include reimplanting the autoclaved tumor-bearing bone. We asked whether such bone will survive and unite with normal bone and whether the local tumor recurrence rate increases after its use. We ascertained the functional outcome (Musculoskeletal Tumor S...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000205876.05093.80
更新日期：2006-06-01 00:00:00
abstract：:Clonal cell lines of murine osteosarcomas were established and have been maintained in vitro for over a year. By implanting these cultured cells into mice, osteosarcomas, whose histological picutres were exactly the same as those of the original tumors, were easily reproduced. The cultured cells of murine osteosarcoma...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-197511000-00026
更新日期：1975-11-01 00:00:00
abstract：BACKGROUND:Femoroacetabular impingement has been proposed as a cause of early osteoarthritis, but it is not known how this develops over time or whether the shape of the proximal femur influences this risk. QUESTIONS/PURPOSES:(1) Which areas of the acetabulum are worn more frequently by individuals with a cam deformit...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2720-x
更新日期：2013-02-01 00:00:00
abstract：:Segmentation and intramedullary rod fixation of the tibia have been found to be safe and effective procedures in osteogenesis imperfecta. An extensible rod is more difficult to insert than a solid rod due to the problem of obtaining an adequate fit distally, so the practical advantage of one type over the other is not...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1981-09-01 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：:A treatment program for chronic pain is reported which focuses on modification of patient pain behavior. After an outpatient pain clinic screening by a multidisciplinary team, the patient with chronic pain (duration of 6 months or longer) is admitted for a 7--8 week inpatient program followed by a 4-week outpatient pe...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1977-11-01 00:00:00
abstract：:Metasul metal-on-metal articulations have been used for 15 years in approximately 300,000 total hip replacements. We have used Metasul articulations in three clinical studies and have shown clinical success as measured by Harris hip scores and patient self-assessment; we also have had the usual mechanical complication...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/01.blo.0000150343.66755.79
更新日期：2004-12-01 00:00:00
abstract：BACKGROUND:Metastatic bone disease is a substantial burden to patients and the healthcare system as a whole. Metastatic disease can be painful, is associated with decreased survival, and is emotionally traumatic to patients when they discover their disease has progressed. In the United States, more than 250,000 patient...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-016-4739-x
更新日期：2016-07-01 00:00:00
abstract：:The wear of high molecular weight polyethylene sockets was measured on radiographs, over a period of 9 to 10 years, in a group of patients whose ages averaged 73.3 years at the end of the period. The average rate of wear was 0.15 mm/year and 68 per cent of patients followed this pattern. Wear more than 2.5 mm in 10 ye...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1975-10-01 00:00:00
abstract：:The Zickel intramedullary fixation device was used to treat 26 patients with subtrochanteric or impending subtrochanteric fractures. The use of this device has advantages over traditional traction methods as well as nail plate fixation. Twenty-two patients were ambulatory within one month following surgery. Healing of...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1979-06-01 00:00:00
abstract：:The growth plate of the tibial tuberosity does not develop until several months after birth and is structurally different than most growth plates that are loaded primarily in compression. Histologically, it is particularly different from the juxtaposed proximal tibial growth plate. The physis of the tibial tuberosity ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1976-05-01 00:00:00
