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 with cortical screws to blocks of polyurethane foam. The fixation strength in cantilever bending (gap closing mode) and torsion was quantified using a material testing system. Different constructs were tested to investigate the effect of the screw orientation at the end of the plate (straight versus oblique at 30 degrees), the plate, and bridging length as well as the number of screws. RESULTS:An oblique screw at the plate end produced an increased strength of fixation in all tests; however, the difference was more significant in shorter plates and in constructs with no screw omission adjacent to the fracture site. Both longer plates and increased bridging length produced a significantly stronger construct able to withstand higher compression loads. Under torsional loading, the fixation strength was mainly dependent on the number of screws. CONCLUSIONS:The current data suggest that when using a conventional plating technique, plate length is the most important factor in withstanding forces in cantilever bending. With regard to resisting torsional load, the number of screws is the most important factor. Furthermore, oblique screws at the ends of a plate increase fixation strength.
journal_name
J Orthop Traumajournal_title
Journal of orthopaedic traumaauthors
Stoffel K,Stachowiak G,Forster T,Gächter A,Kuster Mdoi
10.1097/00005131-200410000-00006subject
Has Abstractpub_date
2004-10-01 00:00:00pages
611-6issue
9eissn
0890-5339issn
1531-2291pii
00005131-200410000-00006journal_volume
18pub_type
杂志文章abstract::Obtaining optimal results in the treatment of extraarticular distal tibia fractures can be challenging. Plate and screw and intramedullary fixation have proven to be effective treatments, but are associated with significant complication rates when used for open fractures and patient with severe medical comorbidities. ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000694
更新日期:2016-11-01 00:00:00
abstract::Minifragment implants provide several advantages for the stabilization of distal humerus fractures. Compared with small fragment implants, minifragment implants may provide enhanced fracture fixation because a greater number of screws can be placed into the distal fragments. In addition, minifragment plates are easier...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/01.bot.0000157908.45939.d7
更新日期:2005-08-01 00:00:00
abstract::Traumatic avulsion of the triceps brachii tendon is a rare injury. Clinical diagnosis shows that elbow extension against gravity is not possible. Radiologically, the lateral elbow may show the presence of flecks of avulsed osseous material from the olecranon ("flake sign"), which is almost pathognomonic of this lesion...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200204000-00010
更新日期:2002-04-01 00:00:00
abstract:OBJECTIVE:The objective of the study was to evaluate functional outcome, patient self-assessment, and radiographic outcome at 1 year in displaced three- and four-part proximal humeral fractures (OTA group 11-B2 and 11-C2). DESIGN:Randomized controlled trial. SETTING:Academic medical center. PATIENTS/PARTICIPANTS:Fif...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,随机对照试验
doi:10.1097/BOT.0b013e31821c2e15
更新日期:2012-02-01 00:00:00
abstract::The ability of calcium phosphate cement (CPC) to reinforce cancellous screws placed in previously stripped holes was studied in vitro. The distal end of canine femurs were harvested. A total of 15 screws were placed in six femurs. The pullout strength (failure force), failure displacement, stiffness, and energy absorb...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199601000-00003
更新日期:1996-01-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to compare rates of surgical site infection (SSI) in patients with type 3 open fractures who had received cefazolin plus gentamicin versus piperacillin/tazobactam for antibiotic prophylaxis. DESIGN:Retrospective cohort study. SETTING:Level 1 trauma center. PATIENTS:Seven hund...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000554
更新日期:2016-08-01 00:00:00
abstract::Rupture of the medial head of the gastrocnemius muscle ("tennis leg") is an affliction generally associated with athletic activity. The diagnosis is made by careful history and physical examination. Although its findings are characteristic, previous reports have documented misdiagnosis of this lesion as thrombophlebit...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199406000-00016
更新日期:1994-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the outcomes of a single-stage surgical protocol to treat a presumed aseptic long-bone nonunion with positive intraoperative cultures obtained at the time of surgery. DESIGN:Retrospective comparative series. SETTING:Orthopaedic specialty hospital. PATIENTS AND METHODS:We retrospectively identif...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001084
更新日期:2018-02-01 00:00:00
abstract::Ipsilateral elbow and forearm fractures are quite rare in children. We present a Monteggia lesion with ipsilateral supracondylar humerus fracture in a 13-year-old girl. Through early surgical management, a successful result was achieved. We believe that, to minimize any initial or subsequent complications in such frac...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199901000-00015
更新日期:1999-01-01 00:00:00
abstract:OBJECTIVE:To evaluate and compare the mechanical stability of two different fixation techniques on experimentally induced calcaneus fractures. METHODS:Thirteen fresh frozen cadaver lower limbs had intraarticular calcaneal fractures produced with an impact loading device. Internal fixation was then performed through la...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199708000-00010
更新日期:1997-08-01 00:00:00
abstract:OBJECTIVE:To examine the impact of number and position of locking screws in the diaphyseal portion of an osteoporotic distal femoral fracture model with hybrid fixation. METHODS:Four groups containing 5 osteoporotic bone models were used with varying combinations of diaphyseal screw fixation: 4 nonlocking screws (cont...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e318238c086
更新日期:2012-09-01 00:00:00
abstract::We report an isolated anterior dislocation of the radial head in an adult after sustaining a fall on the outstretched arm. Based on history and presentation, we speculate that the injury occurred in a position of hyperextension and supination. Reduction was achieved by a pronation maneuver. ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199505000-00014
更新日期:1995-01-01 00:00:00
abstract::A prospective randomized study of severe open tibial fractures (Type II and III) was performed. Individual fractures were randomized to treatment groups according to initial antibiotic therapy: One consisted of a first-generation cephalosporin, and the other consisted of a third-generation cephalosporin. Initial antib...
journal_title:Journal of orthopaedic trauma
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/00005131-198802030-00001
更新日期:1988-01-01 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: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::Aggressive treatment of the multiply injured patient often requires early fixation of many fractures, some of which may be open. Often, patients develop postoperative fevers requiring a thorough workup to rule out infection. Recently, indium-111 white blood cell (WBC) imaging has become a valuable adjunct in the diagn...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract:OBJECTIVES:We developed a protocol to determine the timing of definitive fracture care based on the adequacy of resuscitation. Inception of this project required a multidisciplinary group, including physicians from anesthesiology, general trauma and critical care, neurosurgery, orthopaedic spine, and orthopaedic trauma...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000383
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVES:To examine the biomechanical behavior of 2 techniques of double-plate osteosynthesis for fractures of the adult distal humerus using conventional reconstruction plates and locking compression plates. DESIGN:Basic science study. SETTING:Experimental in vitro study. PATIENTS/PARTICIPANTS:Forty fresh-frozen ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200405000-00004
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:To evaluate the difference in quality of fracture reduction between the sinus tarsi approach (STA) and extensile lateral approach (ELA) using postoperative CT scans in displaced intra-articular calcaneal fractures (DIACFs). DESIGN:Retrospective SETTING:: Level 1 and Level 2 academic centers. PATIENTS:Consec...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001971
更新日期:2020-09-18 00:00:00
abstract:OBJECTIVE:The purpose of this prospective cohort study was to determine if a new patella fracture fixation construct resulted in improved outcomes compared with traditional tension band techniques. DESIGN:Comparative cohort study. SETTING:Academic level I trauma center. PATIENTS/PARTICIPANTS:Patients with isolated, ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000787
更新日期:2017-05-01 00:00:00
abstract::Monteggia fractures represent approximately 1 to 2 percent of forearm fractures, whereas Galeazzi fractures represent 3 to 6 percent. The combination of these injuries in the same extremity is an exceedingly rare occurrence. We report a case of ipsilateral combination Monteggia and Galeazzi fractures in an adult patie...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200202000-00011
更新日期:2002-02-01 00:00:00
abstract::Difficulty in maintaining the reduction of displaced radial fractures has prompted the use of numerous techniques to address this problem. The purpose of this study was to determine if four or five 0.045-in Kirschner pins when placed percutaneously through the ulna into the radius could maintain the reduction of this ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-198906000-00004
更新日期:1989-01-01 00:00:00
abstract:OBJECTIVE:To report on the anatomic variations of the lateral femoral cutaneous nerve with respect to the ilioinguinal surgical dissection. DESIGN:Cadaveric anatomic study. PATIENTS/PARTICIPANTS:Sixty-eight ilioinguinal dissections performed in fifty cadavers. INTERVENTION:The lateral femoral cutaneous nerve was ide...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199901000-00005
更新日期:1999-01-01 00:00:00
abstract:OBJECTIVE:Low-intensity pulsed ultrasound (LIPUS) provides noninvasive therapeutic treatment to accelerate fracture repair and distraction osteogenesis. However, most studies concerning the influence of LIPUS on bone metabolism have been conducted in vivo systems using osteoblastic cells. Therefore, details of the dire...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/01.bot.0000489982.40329.52
更新日期:2016-08-01 00:00:00
abstract::Fracture compression can be achieved in many ways intraoperatively using either screws in compression plates, compression devices, or using intramedullary nails. The use of locked intramedullary nails combines the advantages of indirect fracture fixation and compression with minimal soft tissue disruption. This articl...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0b013e31819f2779
更新日期:2009-05-01 00:00:00
abstract:BACKGROUND:Accurate prediction of likelihood of reoperation in patients with tibial shaft fractures would facilitate optimal management. Previous studies were limited by small sample sizes and noncomprehensive examination of possible risk factors. OBJECTIVE:We conducted an observational study to determine which progno...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200305000-00006
更新日期:2003-05-01 00:00:00
abstract:OBJECTIVE:Screw fixation of the injured syndesmosis restores stability but may reduce motion. The purpose of this study is to determine whether functional outcomes and radiographic results after ankle fracture are affected by the status of the syndesmosis screw. DESIGN:Retrospective review of a consecutive clinical se...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181a9f7a5
更新日期:2010-01-01 00:00:00
abstract:OBJECTIVE:To study the effect of tourniquet control on intramedullary reaming. DESIGN:An experimental prospective nonsurvival animal study was performed using 5 mongrel dogs. A pneumatic tourniquet was randomized to either the right or left hind limb. Tibial intramedullary reaming was performed with progressively larg...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200411000-00004
更新日期:2004-11-01 00:00:00
abstract::After completing an orthopaedic trauma fellowship, what challenges will you have as regard to maintaining balance and perspective in your new position in society? How will you view yourself, family, and your profession? These are simple suggestions on maintaining passion for your profession. ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,评审
doi:10.1097/BOT.0000000000000431
更新日期:2015-11-01 00:00:00
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