Abstract：
:In adult rabbits, a unilateral subcapital osteotomy of the femoral neck was performed to induce avascularity. One half of the osteotomy sites were fixed with a magnetic resonance imaging (MRI) compatible absorbable pin and the other osteotomies had no fixation. The femoral heads were studied at three, five, and 12 days with roentgenographs, bone scintigraphy, and MRI, and MRI only at four weeks and six weeks after osteotomy. Histologic studies were performed after imaging to evaluate the viability of the femoral heads. At three, five, and 12 days after osteotomy, bone scintigraphy showed a decrease in uptake of radioisotope in the region of the femoral head on the operated side relative to the acetabulum and greater trochanter in 17 of 18 rabbits. A comparison of the surgically treated hip to the normal hip in fixed and unfixed osteotomies showed no change in the signal behavior of T1- or T2-weighted images in all rabbits Days 3, 5, and 12 (n = 18) after operation. The rabbit femoral heads with fixation of the osteotomy 28 days after operation showed a decrease in signal intensity in the subcapital region of the femoral head. Six weeks after operation, the fixed femoral head shows a loss of signal in a portion of the femoral head near the osteotomy. The MRI signal intensity appears to increase in the unfixed femoral heads six weeks after operation.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Ruland LJ 3rd,Wang GJ,Teates CD,Gay S,Rijke Asubject
Has Abstractpub_date
1992-12-01 00:00:00pages
30-4issue
285eissn
0009-921Xissn
1528-1132pub_type
杂志文章abstract：:Since 1970, 170 knees have been operated upon using the Kodama-Yamamoto knee prosthesis. Of these 127 had the revised Mark-II prosthesis and of this group 91 cases have been followed for more than a year. Interim results suggest that the total knee score has improved. on the average, from 38 points preoperatively to 7...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1979-11-01 00:00:00
abstract：:Postoperative infection of elective surgical wounds with Clostridium species has been linked to gastrointestinal tract lesions. A 55-year-old man with a history of peptic ulcer disease was treated by open reduction and internal fixation with autogeneic cancellous bone grafting from an anterior iliac crest donor site f...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-08-01 00:00:00
abstract：:The natural history of degenerative lumbar spinal stenosis is documented poorly. Little is known about the efficacy of nonoperative treatments. An aggressive nonoperative treatment consisting of therapeutic exercise, analgesics, and epidural steroid injections is proposed. The clinical evaluation of the patients is re...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200103000-00018
更新日期：2001-03-01 00:00:00
abstract：:Radiocarpal fracture-dislocation was associated with fracture of the distal articular surface of the radius in five patients (six extremities). Closed manipulation resulted in satisfactory reduction of both the dorsal dislocation of the carpus on the distal radius and displaced articular fracture fragment(s) in two of...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1985-07-01 00:00:00
abstract：:Removal of cement from the femoral canal during total hip revision arthroplasty continues to be very challenging. The technique is described using multiple 9-mm perforations placed at least 5 cm apart on the anterior surface of the femoral shaft. The tip of the revision stem should be at least 5 cm distal to the most ...
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：BACKGROUND:Osteochondral allografting is an option for successful treatment of large articular cartilage defects. Use of osteochondral allografting is limited by graft availability, often because of loss of chondrocyte viability during storage. QUESTIONS/PURPOSES:The purpose of this study was to compare osteochondral ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-014-3773-9
更新日期：2014-11-01 00:00:00
abstract：:Osteogenic protein-1 (also known as bone morphogenetic protein-7) is a member of the bone morphogenetic protein family. Several of the bone morphogenetic proteins, including osteogenic protein-1, have been shown to form bone at an ectopic site. However, optimal dosing regimens for the use of osteogenic protein-1 and o...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000129161.54751.8c
更新日期：2004-06-01 00:00:00
abstract：:The clinical use of electric and electromagnetic fields for fracture healing applications began in the early 1970s. Since then, several technologies have been developed and shown to promote healing in difficult to heal fractures. The development of these devices has been aided in recent years by basic research and sev...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1097/00003086-199810001-00021
更新日期：1998-10-01 00:00:00
abstract：BACKGROUND:Patient-specific cutting blocks have been touted as a more efficient and reliable means of achieving neutral mechanical alignment during TKA with the proposed downstream effect of improved clinical outcomes. However, it is not clear to what degree published studies support these assumptions. QUESTIONS/PURPO...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1007/s11999-014-3804-6
更新日期：2015-01-01 00:00:00
abstract：:The influence of suturing on cell infiltration into the meniscus and surrounding tissue is not well known. Histologic changes in the meniscus after suturing and prediction of histologic changes using magnetic resonance imaging were studied. Forty knees in 20 mongrel dogs were studied using four types of 4-0 suture mat...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200106000-00031
更新日期：2001-06-01 00:00:00
abstract：:A group of diseases--ankylosing spondylitis, psoriatic arthritis, Reiter's disease, ulcerative colitis, Crohn's disease, juvenile chronic arthritis (Still's disease), Whipple's disease, and Behçet's syndrome, which previously were thought to be variants of rheumatoid arthritis, now appear to be distinct from that dise...
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：:Fourteen boys (56%) and 11 girls (44%) 4 to 17 years of age (mean, 12.2 years) who had osteosarcoma and open epiphyseal plates were studied. A possible correlation between transepiphyseal spread of osteosarcoma and radiologic and histopathologic findings was investigated. Epiphyseal plate invasion was detected radiolo...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200004000-00006
更新日期：2000-04-01 00:00:00
abstract：:Major vascular, nonthromboembolic complications of total hip arthroplasty are rare: only 23 have been reported over the last 20 years. This is a report of two additional cases. In an 84-year-old woman, the external iliac artery was lacerated following removal of the acetabular component. Two such injuries have been re...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1984-06-01 00:00:00
abstract：:After reviewing a series of 220 patients operated upon between 1975 and 1985 for traumatic brachial plexus injuries, the authors present the results of 103 myelographies, 48 computed tomographies (CT scans) combined with standard myelography, and 25 series of images obtained by magnetic resonance imaging (MRI). To eva...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1988-12-01 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：:In this series of 62 free flap transfers, 48 (80%) have been successful. There have been a significant number of vascular complications, 39% of which the majority were arterial thrombosis. Fifty per cent of those which thrombosed were salvaged on exploration and revision of the vessels. The frequency of complications ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1978-06-01 00:00:00
abstract：:The efficacy of treatment of overuse patellofemoral pain with an elastic knee sleeve with a silicone patellar ring was compared with a simple elastic sleeve and with no treatment in a prospective study of 395 army recruits. During 14 weeks of basic training, 84 knees were diagnosed as having overuse patellofemoral pai...
journal_title：Clinical orthopaedics and related research
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1993-08-01 00:00:00
abstract：:A cross sectional study was performed to try to identify various demographic and radiologic risk factors for disease progression in 50 patients (79 hips) with corticosteroid associated osteonecrosis of the femoral head who had a core decompression. Thirty-one of the hips were in 18 patients who had systemic lupus eryt...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Postirradiation and Paget's osteosarcomas are high-grade malignancies. The five-year survival was only 10% in recent experience at the author's institution. Progressive pain is an important clinical feature in both conditions. Careful roentgenographic studies demonstrate cortical destruction and a soft-tissue mass in ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1991-09-01 00:00:00
abstract：:Three cases of an isolated femoral component failure of a hip surface replacement were treated by use of a press-fit bipolar prosthesis to articulate with the retained acetabular cup. At two to three years post-surgery (average, 31 months), these three conversions had good clinical function and maintained an acceptabl...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1986-07-01 00:00:00
abstract：:A 28-year-old woman with fascioscapulohumeral muscular dystrophy was treated with a one-stage bilateral scapulothoracic fusion. At operation, cortical allografts with screw fixation for anchorage were used, supplemented with autologous cancellous bone. A proper balance and symmetry of the shoulder girdle can be restor...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1991-12-01 00:00:00
abstract：:Operative grading of loosening and histologic examination of the periprosthetic tissues and the femoral and acetabular bone-cement interfaces were undertaken in 72 revised resurfacing hip arthroplasties. By correlating the degree of macroscopic and microscopic loosening at the bone-cement interface, a classification o...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-06-01 00:00:00
abstract：BACKGROUND:Minor events that occur in the workplace sometimes are evaluated with MRI, which may reveal age-related changes in the symptomatic body part. These age-related changes are often ascribed to the event. However, evidence of similar or worse pathophysiology in the contralateral joint would suggest that the symp...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-017-5401-y
更新日期：2017-10-01 00:00:00
abstract：:Ultrastructural changes occurring in rabbit hyaline cartilage were studied during the early stages of antigen-induced arthritis. After one hour, small deposits of electron-dense material (EDM) were noted at depths up to about 3 micron from the surface. During subsequent stages, the number of EDM deposits did not incre...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1984-11-01 00:00:00
abstract：:Structural changes in the anatomy of the soft tissues as a result of long-standing congenital dislocation of the hip (CDH) are seldom described in the literature. Similarly, the anatomy of a hip 52 years after a pelvic support osteotomy for CDH seems not to have been previously observed. A long-term follow-up autopsy ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1991-03-01 00:00:00
abstract：:The objective of this study was to evaluate the effect of muscle force and the posterior cruciate ligament on screw home motion in patients with total knee replacement in a posterior cruciate ligament retaining prosthesis (10 knees) and a posterior cruciate ligament substituting prosthesis (10 knees). Screw home motio...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:Overweight patients are often considered poor candidates for total knee arthroplasty. For assessment of the validity of this proscription, two-year follow-up data from 109 patients were analyzed. Hospital for Special Surgery Scores were recorded, roentgenograms were inspected for radiolucencies, and isokinetic strengt...
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：:Professor Urist's contributions to the understanding of osteoporosis are worthy of reevaluation at this time, when interest in the field has reached unprecedented heights. Recent advances in technology have greatly increased our understanding of osteoporosis by showing that there is no loss of bone in normal premenopa...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：
更新日期：1985-11-01 00:00:00
abstract：BACKGROUND:Large-diameter femoral heads for metal-on-metal THA hold theoretical advantages of joint stability and low bearing surface wear. However, recent reports have indicated an unacceptably high rate of wear-associated failure with large-diameter bearings, possibly due in part to increased wear at the trunnion int...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-013-3244-8
更新日期：2014-02-01 00:00:00
abstract：:The discoid menisci is a common abnormalitiy of the knee seen by pediatric and general orthopaedists. This aberration of the fibrocartilaginous meniscus can occur medially, but is most common on the lateral side. Because of unusual biomechanical stresses, all discoid menisci are at increased risk for meniscal tears. T...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/BLO.0b013e31802c29bd
更新日期：2007-03-01 00:00:00
