Abstract:
OBJECTIVE:To determine if locking compression plates (LCP) are mechanically advantageous compared to low-contact dynamic compression plates (DCP) when used as a bridging plate in a synthetic model of osteoporotic bone. METHODS:Five synthetic bars (Synbone Osteoporotic bone) were initially tested in compression and the Young's modulus determined. It was found to be comparable to that of tibial cancellous bone in an 80-year-old woman; thus, the synthetic bars were deemed usable to simulate some properties of osteoporotic bone. Six bars were then instrumented with an 8-hole narrow large fragment DCP with six 4.5-mm cortical screws (placed in holes 1-3 and holes 6-8). Six bars were instrumented with a narrow 8-hole LCP using four 5-mm locking screws (placed in the 1st, 3rd, 6th, and 8th holes). In a third group, 6 synbone bars were instrumented with a narrow 8-hole large fragment DCP. Cortical screws were placed in holes 2-3 and holes 6-7. In holes 1 and 8, two 6.5 fully threaded cancellous screws were inserted. A 1-cm osteotomy was created in the Synbone at the center of each plate to represent a comminuted fracture. Initially, quasi-static testing was carried out on all specimens in compression to a maximum load of 450 N. Then 4-point bend tests were carried out in two planes (0 degrees and 90 degrees) with the maximum bending moment at 3.5 Nm. Finally, torsional testing was done to a maximum load of 3.5 Nm. The specimens were then cycled in axial compression 350 N at 5 Hz for 30,000 cycles. The static nondestructive tests were repeated. The slope of the load deformation curve indicated the relative stiffness of the construct. The slopes were determined pre- and postcycling and the loss of stiffness in each group compared. Statistical analysis was carried out using the paired t-test. The specimens were then loaded to failure in compression. RESULTS:There was no statistical difference in the stiffness of the LCP or in the osteotomy gap postcycling. All specimens in the DCP groups failed initial static testing in axial compression. No fatigue testing could be undertaken in this group. CONCLUSIONS:In a synthetic model, the LCP was mechanically superior to the DCP when used as a bridging plate and tested in axial compression.
journal_name
J Orthop Traumajournal_title
Journal of orthopaedic traumaauthors
Snow M,Thompson G,Turner PGdoi
10.1097/BOT.0b013e318160c84csubject
Has Abstractpub_date
2008-02-01 00:00:00pages
121-5issue
2eissn
0890-5339issn
1531-2291journal_volume
22pub_type
杂志文章abstract:OBJECTIVES:To determine whether severe open tibial fractures in children behave like similar fractures in adults. DESIGN AND SETTING:A combined retrospective and prospective review evaluated treatment protocol for type II and type III open tibial fractures in children over a ten-year period from 1984 to 1993. PATIENT...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199707000-00010
更新日期:1997-07-01 00:00:00
abstract:OBJECTIVES:To investigate whether a conventional fracture hematoma block (FHB) or an ultrasound-guided peripheral nerve block has more superior analgesic effect during nonoperative management of distal radius fractures in an emergency department setting. Two peripheral nerve block types were investigated, one at the le...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,随机对照试验
doi:10.1097/BOT.0000000000001388
更新日期:2019-04-01 00:00:00
abstract:OBJECTIVES:Much attention has been given to lower extremity amputations that occur more than 90 days after injury, but little focus has been given to analogous upper extremity amputations. The purpose of this study was to determine the reason(s) for desired amputation and the common complications after amputation for t...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3182a665f5
更新日期:2014-04-01 00:00:00
abstract:OBJECTIVE:To measure the dimensions of the narrowest portion of the sacral ala for safe insertion of iliosacral lag screws. DESIGN:Computed tomography (CT) model. SETTING:Level One trauma center. PATIENTS:Thirteen adult patients underwent pelvic CT imaging. MAIN OUTCOME MEASURE:Axial CT scans of intact pelves were ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200001000-00007
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVES:To determine the most commonly associated injuries, complications, and healing rates of patients sustaining segmental tibial shaft fractures. DESIGN:Retrospective review. SETTING:Two Level I trauma centers. PATIENTS:A total of 108 patients with segmental tibial shaft fractures were identified between 2005...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,多中心研究
doi:10.1097/BOT.0000000000001132
更新日期:2018-06-01 00:00:00
abstract::A unique case of coexistent intertrochanteric and subcapital fractures of the hip is presented. A review of the literature found only one previous report of the simultaneous occurrence of these fractures. Closed reduction with in situ pinning was performed. Other treatment alternatives are reviewed and discussed. ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199304000-00008
更新日期:1993-01-01 00:00:00
abstract:OBJECTIVES:To evaluate the outcomes of treatment with a percutaneous compression plate (PCCP) in stable and unstable intertrochanteric hip fractures. DESIGN:Clinical prospective nonrandomized cohort study. SETTING:San Cecilio University Hospital, Granada (Spain). A tertiary-care hospital. PATIENTS:Patients older tha...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000509
更新日期:2016-06-01 00:00:00
abstract::The first known reported case of volar radiocarpal dislocation with ulnar translocation is described with a review of previous literature on the isolated components of these injuries. Radiographic criteria for their diagnosis are presented with recommendations for early operative intervention to minimize the risk of s...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/00005131-198802040-00009
更新日期:1988-01-01 00:00:00
abstract::Young surgeons and their spouses experience a myriad of stresses in the first few years of practice. Issues related to job search, moving to a new community, learning one's craft, time management, changes to spouse's career, child rearing, and the ever blurring line between work time and free time may all contribute t...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3182641fd8
更新日期:2012-09-01 00:00:00
abstract::Osteochondromas are one of the most commonly observed benign bone tumors. Although there have been a number of experimental studies carried out to determine the origin of osteochondromas, their etiology remains a controversial issue. A well-documented case is presented in which a displaced Salter-Harris type II physea...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199410000-00013
更新日期:1994-10-01 00:00:00
abstract:OBJECTIVE:To observe and report the clinical results of indirect plating techniques in the treatment of femoral shaft nonunions originally treated with intramedullary nailing. DESIGN:Prospective consecutive. SETTING:Regional trauma center. PATIENTS:A consecutive series of twenty-three patients with nonunion of femor...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200105000-00004
更新日期:2001-05-01 00:00:00
abstract:OBJECTIVE:To determine the effect of retrograde femoral reaming on the blood flow of the distal femur and the cruciate ligaments. DESIGN:Canine experimental study. SETTING:Tertiary referral and teaching hospital in Toronto, Canada. PARTICIPANTS:Thirteen skeletally mature, cross-bred dogs. MAIN OUTCOME MEASURE:Red c...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199805000-00007
更新日期:1998-05-01 00:00:00
abstract:OBJECTIVES:We studied the safety of immediate weight bearing as tolerated (IWBAT) and immediate range of motion (IROM) following open reduction internal fixation (ORIF) of selected malleolar ankle fractures (defined as involving bony or ligamentous disruption of two or more of the malleoli or syndesmosis without articu...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000002003
更新日期:2020-11-09 00:00:00
abstract:OBJECTIVES:To evaluate the relationship between mechanism of injury and mortality in geriatric trauma patients and the ability of existing injury severity indices (ISIs) to assess mortality. DESIGN:Retrospective review. SETTING:Urban level 1 trauma center. PARTICIPANTS:Four thousand five hundred forty-five trauma pa...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000281
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:This study evaluated whether patients with a left-sided femoral neck fracture (FNF) treated with a sliding hip screw (SHS) had a higher implant failure rate than patients treated for a right-sided FNF. This was performed to determine the clinical relevance of the clockwise rotational torque of the femoral ne...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001934
更新日期:2020-11-01 00:00:00
abstract::Tibial plateau fractures can involve planes that require reduction and stabilization from a posterior approach. This includes posteromedial, posterolateral, and posterior column shear type injuries. This video outlines the prone posteromedial approach to the tibial plateau for posterior column fracture exposure, reduc...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001826
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVES:The aim of this article is to provide a concise review of the basic science of extracorporeal shock wave therapy (ESWT) and to perform a systematic review of the literature for the use of ESWT in the treatment of fractures and delayed unions/nonunions. DATA SOURCES:Articles in the English or German language...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,meta分析,评审
doi:10.1097/BOT.0b013e3181cad510
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVES:To compare open reduction and internal fixation (ORIF) and nonsurgical treatment outcomes in displaced midshaft clavicle fractures. DATA SOURCES:PubMed, MEDLINE, EMBASE, Web of Science, Cochrane Library, and ClinicalTrials.gov were searched in September 2017. STUDY SELECTION:Inclusion criteria were randomi...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,meta分析
doi:10.1097/BOT.0000000000001174
更新日期:2018-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the effects of dynamization of a sliding hip screw plate on the fixation stability for several types of subtrochanteric fractures. Clinical results of treating reverse oblique fractures occasionally show medialization of the femoral shaft. DESIGN:Two types of plate dynamization were compared usin...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199704000-00007
更新日期:1997-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the cost-effectiveness of screw fixation versus hemiarthroplasty for nondisplaced femoral neck fractures in low-demand elderly patients. METHODS:We constructed a Markov decision model using a low-demand, 80-year-old patient as the base case. Costs, health-state utilities, mortality rates, and tra...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001747
更新日期:2020-07-01 00:00:00
abstract::Although the benefit of spinal canal decompression of traumatic thoracolumbar burst fractures is controversial, it remains a desirable procedure, as many reports describe improved neurologic outcome with spinal canal reconstruction. The optimal type of posterior instrumentation for reconstructing the spinal canal is u...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199112000-00004
更新日期:1991-01-01 00:00:00
abstract::The indications for surgical stabilization of a pediatric diaphyseal femur fracture are expanding. Children with multiple system injuries, a head injury, and/or multiple fractures have fewer local and distant complications if the femur fracture is treated operatively. Other indications include a pathological fracture ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199212000-00011
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the experience of a single tertiary care teaching hospital with the association between use of bisphosphonates and atypical femoral fractures, and to identify potential risk factors and chronologic incidence. DESIGN:Retrospective review. SETTING:Tertiary-care teaching hospital. PATIENTS:Thirty-...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0000000000000539
更新日期:2016-04-01 00:00:00
abstract:OBJECTIVES:The pathomorphology of posttraumatic acetabular dysplasia differs fundamentally from the classic developmental dysplasia of the adolescent. The aim of this report is to qualify and quantify the pathomorphologic characteristics of the posttraumatic acetabular dysplasia and to define the requirements for adequ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200009000-00004
更新日期:2000-09-01 00:00:00
abstract:OBJECTIVE:To compare the strength of fixation obtained using two unicortical 4.0 mm diameter cancellous screws versus two bicortical 3.5 mm diameter cortical screws in the fixation of intra-articular calcaneus fractures. DESIGN:In eight paired fresh frozen cadaver feet, the subtalar joint complex, consisting of the ta...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199701000-00008
更新日期:1997-01-01 00:00:00
abstract::Femoral shaft fractures are commonly treated with closed reduction and reamed intramedullary nailing. However, some reductions are difficult to obtain or maintain, especially in muscular or large patients. When closed methods fail to achieve reduction, percutaneous techniques are extremely useful. In addition, the use...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000890
更新日期:2017-08-01 00:00:00
abstract::The proximal femur nail antirotation represents a new generation of intramedullary nailing devices for fixation of stable and unstable trochanteric fractures of the proximal femur. We report 3 cases of postoperative perforation of the helical blade through the femoral head into the hip joint without any signs of rotat...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181893b1b
更新日期:2008-11-01 00:00:00
abstract:OBJECTIVES:To report the safety and clinical outcomes of placing current magnetic resonance imaging (MRI) components inside and outside the MRI bore during MRIs. DESIGN:Retrospective case series. SETTING:Four trauma centers (3 Level I and 1 Level II), from January 2005 to January 2015. PATIENTS:All patients who had ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,多中心研究
doi:10.1097/BOT.0000000000000954
更新日期:2017-11-01 00:00:00
abstract::Radial head fractures are common injuries comprising 1/3 of the fractures about the elbow. As a secondary valgus stabilizer of the elbow, radial head fractures can compromise elbow stability leading to long-term pain, dysfunction, and degenerative change. Furthermore, radial head fractures can be accompanied by associ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0000000000001641
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVE:To determine whether multiple approaches pose an increased risk to fracture healing when compared with a standard single approach in the treatment of pilon (OTA 43C) fractures. DESIGN:Retrospective review of a prospective database. SETTING:Level I academic trauma center and level II community trauma center....
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000728
更新日期:2017-02-01 00:00:00