Abstract:
OBJECTIVE:Intramedullary nail locking bolts often fail to gain purchase or cut out in osteoporotic bone. The biomechanical stability of a bladelike device that lowers intraosseous stress levels by distributing the load over a greater volume of bone was compared with conventional locking bolts in osteoporotic bone. METHODS:Standardized simulated comminuted supracondylar femoral fractures (segmental defect) in fresh-frozen paired osteoporotic (bone mineral density <200 milligrams per cubic centimeter) human cadaveric femurs were stabilized with a retrograde unreamed distal femoral nail and distally interlocked with conventional locking bolts or a bladelike device. The distal portions of the fixator-bone constructs were tested under axial load, and the stiffness and strength were compared (pairwise). RESULTS:Interlocking with a bladelike device was 41 percent stiffer (p = 0.01) and 20 percent stronger (p = 0.02) than that with conventional locking bolts. All posttesting radiographs showed compaction of the cancellous bone distal to the interlocking devices. Even after nail displacements of twelve millimeters, only a few locking bolts were plastically deformed and no bladelike device showed gross plastic deformation. CONCLUSION:This study showed the biomechanical benefits of increasing the bone-implant interface surface for improving the acute stiffness and strength of fracture fixation in osteoporotic cancellous bone. The fixator-bone construct withstood higher forces before failure in these fragile bones.
journal_name
J Orthop Traumajournal_title
Journal of orthopaedic traumaauthors
Ito K,Hungerbühler R,Wahl D,Grass Rdoi
10.1097/00005131-200103000-00008subject
Has Abstractpub_date
2001-03-01 00:00:00pages
192-6issue
3eissn
0890-5339issn
1531-2291journal_volume
15pub_type
杂志文章abstract:OBJECTIVES:To determine whether surgeons' and patients' perceptions of outcomes after high-energy lower-extremity trauma are similar and to identify factors associated with disagreement. DESIGN:Prospective study. SETTING:Eight level 1 trauma centers. PATIENTS:Four hundred sixty-three patients treated for limb-threat...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,多中心研究
doi:10.1097/BOT.0b013e3181ab2c90
更新日期:2009-11-01 00:00:00
abstract:SUMMARY:In the following case, a 20-year-old male was involved in a motorcycle accident where he sustained an open midshaft femur fracture treated with open reduction and internal fixation. Several weeks later, the wound became infected and the plate was removed. Over the following 20 years numerous incision and debrid...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e318051532d
更新日期:2007-05-01 00:00:00
abstract::Thirty-five patients with four-part displaced proximal humeral fractures and fracture-dislocations were retrospectively reviewed from the years 1977-1990. Thirty-three patients were available for study. All fractures were treated by open reduction and internal fixation allowing early motion. Surgical technique was as ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199312000-00002
更新日期:1993-01-01 00:00:00
abstract:OBJECTIVE:The aim of the current study was to see how different interlocking mechanisms would affect construct stability and overall failure in the treatment of two-part surgical neck fractures in the proximal humerus in vitro. METHODS:Left and right bones of eight pairs of fresh-frozen human cadaveric humeri were ass...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181ffdf9a
更新日期:2011-07-01 00:00:00
abstract::Severe open foot and ankle injuries are still a challenge for the orthopaedic surgeon. Their treatment is even more difficult in third world countries and in war settings where high-energy trauma with severe soft tissue damage is more frequent. Lack of equipment, poor resources and hygiene, and different cultural syst...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181d4be0f
更新日期:2011-03-01 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::In the current health care environment, cost containment is more important than ever. Most physicians currently are unaware of the cost of operating room supplies. A large amount of waste occurs secondary to lack of knowledge and absence of physician incentives for cost saving. Many of the decisions for supply use can...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000718
更新日期:2016-12-01 00:00:00
abstract:OBJECTIVES:To relate the incidence of implant failure after internal anterior fixation of the pelvic ring to functional outcome and the health-related quality of life in patients. DESIGN:Retrospective chart and radiographic review. SETTING:Level I Trauma center. METHODS:We retrospectively identified all patients who...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000501
更新日期:2016-06-01 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 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:BACKGROUND:Although there is general agreement as to the pathophysiology and treatment of compartment syndrome and the importance of intramuscular pressure measurements, there are many methods described to obtain these measurements. Variations in experimental measurements using current electronic monitoring, needle, an...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e31822908cf
更新日期:2012-01-01 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:OBJECTIVES:The purpose of this study is to evaluate the predictive ability of the Orthopedic Trauma-Open Fracture Classification (OTA-OFC) system in regards to short-term (90 days) outcomes of amputation, infection necessitating intravenous antibiotics, and wound healing in clinical practice across multiple centers. D...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章,多中心研究
doi:10.1097/BOT.0000000000000648
更新日期:2016-11-01 00:00:00
abstract::The distribution of clindamycin in tibial cortical bone, administered via direct local infusion with an implantable pump, is described. Clindamycin concentrations in cortical bone were measured after 3, 7, and 21 days of intraosseous infusion. The tibia were divided into four quadrants relative to the outflow infusion...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199410000-00003
更新日期:1994-10-01 00:00:00
abstract:OBJECTIVES:The purpose of this study is to evaluate the change in quantitatively scored knee pain during union. DESIGN:This is a retrospective review of prospectively collected data over a 15-year period. SETTING:Academic medical center. PATIENTS:All patients treated with an intramedullary nail were evaluated for kn...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e318213f587
更新日期:2011-12-01 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::A previously developed experimental model for producing nonunions in rats was used to study the biochemical changes of connective tissue parameters in impaired fracture repair. The model is based on rotational instability between the fracture fragments. A mid-diaphyseal femoral osteotomy was performed on 30 male rats ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-199602000-00007
更新日期:1996-01-01 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::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:OBJECTIVES:To determine whether uncemented implants would provide similar outcomes while avoiding the complications associated with cement in the treatment of elderly patients with proximal humerus fractures (PHFs) with primary reverse total shoulder arthroplasty (RTSA). DESIGN:Case series. SETTING:A single Level I t...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001465
更新日期:2019-07-01 00:00:00
abstract::Tibial shaft fractures distal to total knee arthroplasty are rare, but they are likely to become more common with the increasing number of arthroplasty procedures being performed. These fracture patterns have been treated in the past either with closed reduction and casting/bracing or with open reduction internal fixa...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000096
更新日期:2014-12-01 00:00:00
abstract::Unstable pelvic ring injuries are associated with an increased mortality rate, most commonly from severe hemorrhage. Circumferential pelvic antishock sheeting has proven effective for rapidly stabilizing the pelvic ring and has become an integral part of resuscitation protocols. Acute antishock sheet placement frequen...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e3181a87c6c
更新日期:2009-10-01 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:PURPOSE:Comminuted iliac fractures are uncommon and difficult to treat. The purpose of this study is to further delineate the fractures, to present a management protocol, and to evaluate the results of treatment. DESIGN:Retrospective clinical study. SETTING:Level one trauma center at Harborview Medical Center. PATIE...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/00005131-200005000-00008
更新日期:2000-05-01 00:00:00
abstract::This video demonstrates a displaced radial shaft fracture repaired through a dorsal (Thompson) approach to the forearm. The patient is an 18-year-old man who sustained a left elbow dislocation and ipsilateral radial shaft fracture (OTA/AO: 22-B2) while playing basketball. The patient underwent a closed reduction of th...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001827
更新日期:2020-08-01 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 determine whether fixation of pertrochanteric hip fractures with cephalomedullary nails (CMNs) with a neck-shaft angle (NSA) less than the native NSA affects reduction and lag screw cutout. DESIGN:Retrospective comparative study. SETTING:Level I trauma center. PATIENTS/PARTICIPANTS:Patients treated wit...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000001096
更新日期:2018-04-01 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::A disaster is a catastrophic event that disrupts normal infrastructure to such a degree that normal response mechanisms and capabilities cannot manage what is required to respond appropriately to the event. Launched after the largest urban disaster in modern history--the 2010 Haiti Earthquake--the American Academy of ...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0000000000000405
更新日期:2015-10-01 00:00:00
abstract:OBJECTIVE:Recombinant human bone morphogenetic protein-2 (rhBMP-2) has been shown to enhance new bone formation in fracture and bone defect models in both normal and diabetic rats. Effects of rhBMP-2 in a segmental femoral defect model in diabetes mellitus (DM) BB Wistar rats have not been reported. METHODS:Collagen s...
journal_title:Journal of orthopaedic trauma
pub_type: 杂志文章
doi:10.1097/BOT.0b013e31819f290e
更新日期:2009-04-01 00:00:00