Abstract:
:In an attempt to reduce pin loosening, a flanged external fixator pin has been designed and its bending stiffness has been compared with that of a standard pin. The pins were inserted into pilot holes previously drilled into a piece of teak hardwood. Loads of different magnitudes were applied at a fixed moment arm and force-deflection curves were obtained. Thereafter, percentage stiffness increase was calculated for each pilot hole size. The results show that the addition of a collar to the external fixator pin increases its stiffness and its ability to resist bending forces. In a parallel study, the stresses generated at the pin-bone interface by this pin and a standard pin were compared using finite element analysis techniques. The results show that the flange significantly reduced the stresses generated at the pin-bone interface. In addition, stresses were dissipated over a wider area.
journal_name
J Orthop Traumajournal_title
Journal of orthopaedic traumaauthors
Oni OO,Capper M,Soutis Cdoi
10.1097/00005131-199502000-00013subject
Has Abstractpub_date
1995-02-01 00:00:00pages
83-8issue
1eissn
0890-5339issn
1531-2291journal_volume
9pub_type
杂志文章abstract::The maximum pullout force in the distal metaphysis of cadaver femurs was investigated using a commercially available, pneumatically inserted staple. In paired studies, a significantly greater pullout force was required in the power-driven staples than in an almost identical sized hand-driven staple. A nonlinear relati...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199004020-00009
更新日期:1990-01-01 00:00:00
abstract::Twenty-one patients with fractures of the ipsilateral femur and tibia were treated at Boston City Hospital from 1982 through 1987. Fourteen (67%) of the 21 patients sustained a total of 17 open fractures (76% of which were grade II or III wounds). Over 50% of the patients suffered concomitant ipsilateral knee injuries...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199004030-00013
更新日期:1990-01-01 00:00:00
abstract::Not all fractures heal well or rapidly in the adult skeleton, and basic scientists and clinicians continue to search for ways to make fractures heal more predictably. It is a fundamental tenet of orthopaedics that skeletal injury is followed by inflammation and that this inflammatory response is the first stage in a s...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0b013e3181f17b33
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVES:To analyze long-term functional outcomes in patients with posttraumatic infected tibial nonunions having undergone bone transport with hexapod external fixator. DESIGN:Retrospective cohort study. SETTING:Level 1 trauma center. PATIENTS/PARTICIPANTS:Thirty-eight patients with infected nonunions of the tibi...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001005
更新日期:2018-01-01 00:00:00
abstract:OBJECTIVES:To determine the rates of infection in low-energy gunshot wounds (GSWs) to the extremity. DESIGN:Retrospective review. SETTING:Level I trauma center. PATIENTS/PARTICIPANTS:Patients (N = 140) with at least 90-day follow-up for extremity-only low-energy GSW injuries from 2010-2014 were retrospectively revie...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000827
更新日期:2017-06-01 00:00:00
abstract::This case report provides background reviewing mortality rates associated with falls from height before detailing the clinical history of a patient who survived a fall from a height of 43 stories. A multidisciplinary team treated both orthopaedic and nonorthopaedic injuries with the ultimate goal of preserving potenti...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e318193bc8d
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVES:To describe the technique and to determine the outcome of operatively treated displaced scapular body or glenoid neck fractures using minifragment fixation through a modified Judet approach. DESIGN:Retrospective review of scapular or glenoid fractures. SETTING:Level 1 teaching trauma center. PATIENTS:All ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181a18216
更新日期:2009-09-01 00:00:00
abstract:OBJECTIVES:To correlate functional deficits after surgical treatment of displaced intraarticular calcaneal fractures (DIACFs) as measured through dynamic pedobarography with clinical and radiographic long-term results. DESIGN:Retrospective single-center study. SETTING:Level 1 trauma center. PATIENTS:Sixty-five patie...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001325
更新日期:2018-12-01 00:00:00
abstract:OBJECTIVES:This study aimed to evaluate the incidence and morphologic features of posterolateral fragments in lateral and bicondylar tibial plateau fractures. DESIGN:This study used retrospective chart and computed tomography (CT) reviews. SETTING:The study was conducted in a university hospital. PATIENTS:All patien...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000170
更新日期:2015-02-01 00:00:00
abstract:OBJECTIVES:Posttraumatic invasive fungal infections threaten critically injured combat-related injuries and require a combination of extensive surgery and systemic antifungal therapy, along with topical antimicrobials used adjunctively to control the infection. We evaluated the in vitro activity of topical agents in va...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3182830bf9
更新日期:2013-08-01 00:00:00
abstract::Femoral neck nonunions are a difficult complication in the treatment of femoral neck fractures and have traditionally been managed using an intertrochanteric valgus osteotomy and blade plate. We propose an alternative method, a proximal femoral valgus osteotomy using a sliding hip screw instead of a blade plate. This ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/00005131-200608000-00006
更新日期:2006-07-01 00:00:00
abstract:OBJECTIVES:To determine how often preoperative testing is requested for geriatric hip fracture patients, to assess the extent to which preoperative testing is associated with delayed surgery, and to measure the frequency with which preoperative testing changes patient management. DESIGN:Retrospective. SETTING:Academi...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000444
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:To prospectively analyze a homogenous group of trauma patients with pure sacroiliac (SI) joint dislocations treated with iliosacral screws (ISS), with specific attention to functional outcome and its correlation with the presence or absence of SI joint ankylosis and quality of reduction. DESIGN:Retrospective...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e31816b6b4e
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to evaluate forearm rotation after volar plating of the distal radius fractures with and without pronator quadratus repair. DESIGN:This was an institutional review board-approved retrospective review of prospectively collected data. SETTING:The study was conducted at an Academ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3182539333
更新日期:2013-03-01 00:00:00
abstract:OBJECTIVES:To determine the effects of tubular resorbable polymer membranes on the healing of a segmental diaphyseal bone defect. DESIGN:A randomized prospective study using the minipig model. Animals were evaluated with in vivo roentgenograms on a biweekly basis until explanted at twelve weeks. SETTING:After surgery...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199711000-00002
更新日期:1997-11-01 00:00:00
abstract:OBJECTIVES:To compare the strength of fixation of percutaneous screw versus plate/screw fixation in a paired cadaver model of OTA 41-B3 (Schatzker type II) split-depression fractures of the lateral tibial plateau. METHODS:Six matched pairs of cadaveric knees were acquired. An OTA 41-B3 (Schatzker type II) split-depres...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001177
更新日期:2018-07-01 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::Percutaneous iliosacral screw (IS) fixation for pelvic ring injuries with the use of an O-arm imaging system has been associated with decreased procedure time and improved accuracy of IS screw placement compared with the use of fluoroscopic guidance. Specifically, patients with sacral dysmorphism require identificatio...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001213
更新日期:2018-08-01 00:00:00
abstract:OBJECTIVE:To test the hypothesis that oblique screws at the ends of a plate provide increased strength of fixation as compared to standard screw insertion. DESIGN:Biomechanical laboratory study in synthetic bone test medium. METHODS:Narrow 4.5-mm stainless steel low-contoured dynamic compression plates were anchored ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200410000-00006
更新日期:2004-10-01 00:00:00
abstract::Standard 5-mm AO Schanz pedicle screws were biomechanically compared with a new design, featuring 6-mm threads with a 5-mm core diameter continuous with the shaft. One each of the two screw designs was surgically inserted into the matching pedicles of 32 cadaveric vertebrae. The pull-out strengths of the screws were t...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199308000-00015
更新日期:1993-01-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to evaluate the loss of strength in the distal humerus that resulted from the creation of two different entry portals used for retrograde humeral nailing. DESIGN:Nine pairs, treated as blocks of size two, of fresh frozen humeri from individuals free of musculoskeletal disease w...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200002000-00005
更新日期:2000-02-01 00:00:00
abstract::A case is presented of scaphocapitate fracture syndrome associated with a Salter-Harris type II fracture of the distal radius and ulna occurring in an 11-year-old girl. The proximal fragment of the fractured capitate was rotated 180 degrees. The injury was treated by open reduction and internal fixation. One year afte...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199704000-00017
更新日期:1997-04-01 00:00:00
abstract::Results of hemiarthroplasty for complex four-part proximal humerus fractures in the elderly have been unreliable. Although patients often achieve pain relief, return of above-shoulder level function can be challenging, because tuberosity nonunion, malunion, and/or resorption is quite common. The reverse shoulder repla...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181f22088
更新日期:2011-05-01 00:00:00
abstract::Seat belt legislation has resulted in increased restraint use by passengers in automobiles in Washington State. At Harborview Medical Center in Seattle, we have observed an increased incidence of seat belt-related injuries. Twenty cases of Chance-type thoracolumbar flexion-distraction fractures were reviewed retrospec...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199105020-00006
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:To determine whether an injectable thrombin product [thrombin hemostatic matrix (THM)] at closure of a Kocher-Langenbeck approach reduces the risk of heterotopic ossification (HO) formation after an acetabular fracture. DESIGN:Case control. SETTING:Two Level 1 trauma centers. PATIENTS:Patients with operati...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001783
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:To report the outcomes of percutaneous autologous bone marrow injection for nonunion or delayed union of the distal tibial metaphysis in patients with prior plating. DESIGN:Consecutive case series. SETTING:Tertiary center. PATIENTS:Eleven consecutive patients (aged 24-51 years) were referred to us with a n...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e31828bf077
更新日期:2013-09-01 00:00:00
abstract::Recent innovations have greatly increased the range of proximal humeral fractures that are amenable to open reduction and plate fixation.The optimum technique for some of the more complex fracture patterns is not yet fully refined.This article aims to describe the recent advances in the treatment of complex proximal h...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0b013e31821c0a2f
更新日期:2011-10-01 00:00:00
abstract::Theoretically, fissures and minor fractures of the pelvis sustained by the elderly after low-energy trauma may lead to thromboembolic complications. Few studies exist, but clinically, these injuries had been considered to have an excellent prognosis until a recent study reported a 10% fatality rate from pulmonary embo...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/00005131-198906000-00005
更新日期:1989-01-01 00:00:00
abstract:OBJECTIVES:Long bone fractures that fail to heal or show a delay in healing can lead to increased morbidity. Bone marrow aspirate concentrate (BMAC) containing bone mesenchymal stem cells (BMSCs) has been suggested as an autologous biologic adjunct to aid long bone healing. The purpose of this study was to systematical...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0000000000000453
更新日期:2016-01-01 00:00:00
abstract:OBJECTIVE:To determine the relative amount of fixation of self-reinforced poly-L-lactide (SR-PLLA) rods and Kirschner wires in bovine cancellous bone by comparing their pullout strength DESIGN:An in vitro laboratory study was performed using bovine femurs. Ten two-millimeter-diameter pins of each type were inserted in...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200108000-00008
更新日期:2001-08-01 00:00:00