Abstract：
:Temperature sensors were placed in 50 knees in 25 patients who had one or both joints replaced. Temperature recordings were made before walking, after walking, and after cycling. The heat generated in healthy, arthritic, and replaced knees was measured. The knee replacements were done using eight different prostheses. A rotating hinge knee prosthesis generated a temperature increase of 7 degrees C in 20 minutes and 9 degrees C in 40 minutes. An unconstrained ceramic femoral prosthesis articulating with a polyethylene tibial prosthesis generated a temperature increase of 4 degrees C compared with a healthy resting knee. The other designs using a cobalt-chrome alloy and high-density polyethylene had temperature increases of 5 degrees-7 degrees C with exercise. Frictional heat generated in a prosthetic knee is not immediately dissipated and may result in wear, creep, and other degenerative processes in the high-density polyethylene. Extended periods of elevated temperature in joints may inhibit cell growth and perhaps contribute to adverse performance via bone resorption or component loosening. Prosthetic knees generate more heat with activity than healthy or arthritic knees. More-constrained knee prostheses generate more heat than less-constrained prostheses. A knee with a ceramic femoral component generates less heat than a knee with the same design using a cobalt-chromium alloy.
journal_name
Clin Orthop Relat Resjournal_title
Clinical orthopaedics and related researchauthors
Pritchett JWdoi
10.1097/01.blo.0000183739.50869.bbsubject
Has Abstractpub_date
2006-01-01 00:00:00pages
195-8eissn
0009-921Xissn
1528-1132pii
00003086-200601000-00031journal_volume
442pub_type
杂志文章abstract：:Thirty intraarticular calcaneal fractures were studied by computed tomography and then treated with a variety of closed methods. A classification of the fractures was devised according to the amount of displacement of the posterior facet. Follow-up evaluation showed that Type I fractures recovered function and healed ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-05-01 00:00:00
abstract：:The insertion of cement and femoral prosthesis in total hip replacement produces biochemical abnormalities. These are thought to be caused by a marked rise in intramedullary pressure. Surgeons aim to reduce these pressures by using different methods of insertion and venting. The present investigation was undertaken to...
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：:An aggregate of biodegradable beta-tricalcium phosphate and bone morphogenetic protein (BMP/TCP) induces the differentiation of cartilage within eight days, cartilage and woven bone within 12 days, and lamellar bone, including bone marrow, within 21 days. The yield of new bone from a 1-mg dose was more than 12 times g...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1984-07-01 00:00:00
abstract：:Osteonecrosis (aseptic or avascular necrosis of bone) is an entity with many causes that can occur at a variety of sites. It is a known complication of corticosteroid therapy, either alone or combined with other drugs in the treatment of malignancy. Osteonecrosis associated with chemotherapy that does not include cort...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1986-03-01 00:00:00
abstract：:The purpose of this study was to determine whether a brace designed to unload varus degenerative knees actually alters medial compartment loads by decreasing the adduction moment. Eleven patients who had arthrosis confined to the medial compartment were fitted with a valgus brace and tested before and after brace wear...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1997-11-01 00:00:00
abstract：:Alterations in serum calcium fractions after trauma may be of clinical importance. For investigation of this problem, serum calcium fractions were studied prospectively in 42 patients with severe musculoskeletal injuries. The severity of trauma was assessed with the Apache II severity of disease classification system....
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-02-01 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：:A new method of geometrical analysis is capable of determining bone deformity from routine anteroposterior (AP) and lateral roentgenograms. The maximum angulation may occur in a plane other than the AP or lateral roentgenogram planes. Therefore, the maximum angulation may exceed the apparent angulation seen on routine...
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：:The commonly used classification systems of hip dislocation are based on the direction of the dislocation and the presence of associated lesions. However, no rating system can reliably predict the patient's outcome and prognosis based on the initial presentation and classification. In general, patients with anterior d...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-200008000-00004
更新日期：2000-08-01 00:00:00
abstract：BACKGROUND:Recent studies have shown successful midterm outcomes after total hip arthroplasty (THA) in patients with human immunodeficiency virus (HIV). However, little data exist on the epidemiology, risk of perioperative complications, and length of stay in patients with HIV receiving THA. QUESTIONS/PURPOSES:The pur...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-014-3855-8
更新日期：2015-02-01 00:00:00
abstract：:The osteoconductive and osteoinductive potential of two human allogeneic demineralized bone matrix putties were compared in a critical-sized athymic rat femoral defect model. Defects were treated with (1) a demineralized bone matrix in a hyaluronic acid carrier, (2) a demineralized bone matrix in a glycerol carrier, (...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/01.blo.0000073347.50837.16
更新日期：2003-08-01 00:00:00
abstract：:A clinical survey of 56 patients was conducted at four different centers in Canada to evaluate the effect of extremely low frequency pulsed magnetic fields (PMF) on ununited fractures of the tibia. All ten patients with delayed union and 84% of the 44 patients with nonunion healed. One case with a traumatic pseudarthr...
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：:From 1972 until 1988, transtrochanteric rotational osteotomy was used to treat 474 hips in 378 patients with idiopathic and steroid-induced osteonecrosis of the femoral head. Two hundred twenty-nine of 295 hips with anterior rotation and follow-up periods ranging from three to 16 years had excellent surgical results (...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1992-04-01 00:00:00
abstract：BACKGROUND:Modern metal-on-metal hip resurfacing arthroplasty designs have been used for over a decade. Risk factors for short-term failure include small component size, large femoral head defects, low body mass index, older age, high level of sporting activity, and component design, and it is established there is a su...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2347-y
更新日期：2012-11-01 00:00:00
abstract：:The efficiency of ultraviolet light and fluorescence macrophotography in screening various tissues of the locomotor system was tested on 46 human and 43 animal specimens from surgical, experimental and autopsy material, examined as living tissues during operation, or as fresh, frozen or fixed specimens. After visual e...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-197511000-00033
更新日期：1975-11-01 00:00:00
abstract：:The combined Coventry-Maquet procedure has been proposed as a means of treating dual-compartment degenerative arthritis of the knee. The procedure was investigated in a prospective study of 14 patients treated by combined high tibial osteotomy and tibial tubercle elevation. Preoperative scores averaged 50 points and s...
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：:Delayed onset tuberculosis infection appeared in a total knee implant in a 61-year-old former coal miner. After a five-day interval the knee was salvaged by removal, aggressive debridement, suction-irrigation, and reinsertion. Antituberculosis drugs were administered immediately following surgery on the basis of the c...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1985-12-01 00:00:00
abstract：BACKGROUND:The causes of rotator cuff tendon rupture are multifactorial and still unclear. Intrinsic and extrinsic factors have been implicated as predisposing risk factors for rotator cuff rupture. Previous studies have suggested a relationship between elevated serum lipid profiles and tendon ruptures, although not ro...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-1151-9
更新日期：2010-06-01 00:00:00
abstract：:A case of avulsion fracture of the lateral sesamoid is reported in association with dislocation of themetatarsophalangeal joint of the hallux. The radiographic criteria to establish the diagnosis of fracture in sesamoid bones are outlined. Review of the literature reveals only one other reported case associated with a...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1980-06-01 00:00:00
abstract：:The modified Wilson osteotomy for hallux valgus is a double oblique osteotomy through the metatarsal shaft. The distal fragment is displaced laterally and plantarward. The lateral displacement corrects the varus position of the metatarsal, while the plantar displacement prevents the distal fragment from tilting dorsal...
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:Ankle arthrodesis may be achieved using the Ilizarov method. Comorbidities, such as diabetes, Charcot neuroarthropathy, osteomyelitis, leg length discrepancy, and smoking, can make an ankle fusion complex and may be associated with lower rates of healing. QUESTIONS/PURPOSES:We asked if (1) smoking and other...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-012-2470-9
更新日期：2012-10-01 00:00:00
abstract：:The 2001 Institute of Medicine report entitled Unequal Treatment: Confronting Racial and Ethnic Disparities in Health Care pointed out extensive healthcare disparities in the United States even when controlling for disease severity, socioeconomic status, education, and access. The literature identifies several groups ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章,评审
doi：10.1007/s11999-009-0993-5
更新日期：2009-10-01 00:00:00
abstract：:Salmonella osteomyelitis is uncommon in healthy patients. Because of its slow, indolent course and often remote presentation, its diagnosis may be difficult. A case of osteomyelitis of the tibia secondary to Salmonella enteritidis was diagnosed after a biopsy for presumed fibrous dysplasia was performed. ...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/00003086-199609000-00023
更新日期：1996-09-01 00:00:00
abstract：:Two sisters exhibit arthrogrypotic changes in the lower extremities associated with a previously undescribed pelvic dysplasia. The pelvic dysplasia is characterized by: severe abnormalities of ossification with markedly widened triradiate cartilages; irregular, notched acetabulae; marked hypoplasia of the ilia; notchi...
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：:Most studies investigating articular cartilage changes use global parameters and neglect the large topological variation in the response of cartilage to immobilization and remobilization. We hypothesized a registration-based semi-automatic segmentation method would be highly reproducible to detect local changes in pat...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1097/BLO.0b013e3180308431
更新日期：2007-03-01 00:00:00
abstract：:The extraosseous blood supply to the femoral head was studied by microdissection of latex-injected vessels in 19 neonatal hips. The fetuses were of black African descent. Although the general pattern was similar to that described by previous investigators, in seven of the specimens the largest contribution to the bloo...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1983-04-01 00:00:00
abstract：:During the past ten years, approximately 3000 cases of knee arthroscopy have been performed in a CO2 medium. The setup for the use of CO2 is quite simple and is explained here on a step-by-step basis. Advantages are a better visual field and no motion of tissue in the arthroscopic field. The disadvantages are minimal....
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
abstract：:Current-generation metal-on-metal hip resurfacing implants (SRAs) have been in widespread global use since the 1990s, and in the United States, specific implants have recently been approved for clinical use. Many recent publications describe short-term survivorship achieved by either implant-designing surgeons or high...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-009-1157-3
更新日期：2010-02-01 00:00:00
abstract：BACKGROUND:Cementless fixation remains controversial in TKA due to the challenge of achieving consistent skeletal attachment. Factors predicting durable fixation are not clearly understood, but we presumed bone ingrowth could be enhanced by the quantity of host bone and application of autograft bone chips. QUESTIONS/P...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：10.1007/s11999-011-2214-2
更新日期：2012-07-01 00:00:00
abstract：:Axillary crutch palsy, although well described in the literature, is rarely seen in clinical practice. Little has been written in the contemporary orthopaedic literature. The purpose of this case report is to report on a well-documented axillary crutch palsy with bilateral, predominantly radial, nerve dysfunction that...
journal_title：Clinical orthopaedics and related research
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
