Abstract:
:Spine stabilization after C3-C7 laminectomy can be accomplished with many instrumentation options. A hybrid construct using lateral mass screws from C3 to C5 and pedicle screws at C7 can potentially maximize strength and solve the spatial constraints introduced by the placement of C6 lateral mass screws and C7 pedicle screws. Seven cadaveric cervical spines from C2 to T2 were potted in a custom testing apparatus. Differential variable reluctance transducers were placed on C6 and C7 to measure linear displacement. Specimens were loaded in flexion, extension, lateral bending, and axial torque at 1.5 Nm. A wide laminectomy was then performed, and specimens were randomized to first receive either the bilateral C3-C7 lateral mass screw construct or a hybrid construct with C3-C5 lateral mass screws and C7 pedicle screws. All specimens were tested with both constructs. Normalized deformation (mean±SD) for the lateral mass screw vs the hybrid pedicle screw constructs in the sagittal plane was 7.46%±5.48% vs 5.68%±3.67%, respectively (P=.237). Coronal deformation for lateral mass screw vs the hybrid pedicle screw constructs was 19.2%±10.9% vs 13.6%±9.53% (P=.237). Axial rotation deformation for lateral mass vs pedical screw constructs was 85.9%±83.3% vs 74.7%±58.1%, respectively (P=.868). Despite data reported in the literature indicating a higher pullout strength of pedicle screws and improved strength of hybrid pedicle screw constructs compared with lateral mass screw constructs, a hybrid construct taking spatial constraints and increased danger of pedicle screw placement above C7 into account showed no improvement in motion compared with a lateral mass screw construct.
journal_name
Orthopedicsjournal_title
Orthopedicsauthors
Regan CM,Emmanuel S,Hornik C,Weinhold P,Lim MRdoi
10.3928/01477447-20130327-27subject
Has Abstractpub_date
2013-04-01 00:00:00pages
e484-8issue
4eissn
0147-7447issn
1938-2367journal_volume
36pub_type
杂志文章相关文献
ORTHOPEDICS文献大全abstract::This paper presents a report of a case with vertebral metastatic chemodectoma with neurological complication who was treated successfully. A review of the literature on vertebral metastatic chemodectoma is also presented. ...
journal_title:Orthopedics
pub_type: 社论
doi:10.3928/0147-7447-19820601-09
更新日期:1982-06-01 00:00:00
abstract::Soft-tissue chondromas are rare and benign soft-tissue tumors. Over 95% occur in the hands and feet. They are seen in both sexes equally and mainly occur in patients aged 30-60 years. If excised fully, they do not reoccur, and no cases in the literature have reported malignant transformations. ...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20070301-13
更新日期:2007-03-01 00:00:00
abstract::Knee instability is a common cause of prosthetic knee failure. This study sought to determine if synovial fluid analysis is a useful tool in diagnosing prosthetic knee instability. Aspirations were performed in 42 knees in which the diagnosis of instability was in doubt. This group was compared to 120 aspirated knees ...
journal_title:Orthopedics
pub_type: 临床试验,杂志文章
doi:10.3928/01477447-20090501-12
更新日期:2009-05-01 00:00:00
abstract::We present a case that demonstrates an occasion where an alternative method of C1-C2 fusion may be used when a posterior approach limited to the atlantoaxial level is not desirable. A 22-year-old man presented with a symptomatic nonunited Brooks posterior atlantoaxial fusion following a chronically displaced type II o...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1999-12-01 00:00:00
abstract::The Charité III (DePuy Spine, Inc, Raynham, Massachusetts) and ProDisc II (Synthes Spine, West Chester, Pennsylvania) artificial disk replacements were approved for use by the United States Food and Drug Administration in October 2004 and January 2006, respectively. The purpose of this study was to retrospectively rev...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20090624-08
更新日期:2009-08-01 00:00:00
abstract::A wide range of workable instrumentation is available for the treatment of proximal humeral fractures, whereas osteosynthesis of scapular fractures is commonly achieved by plate/screw fixation. Older persons are confronted with a steadily rising incidence of osteoporotic fractures. Especially for this group of patient...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1993-01-01 00:00:00
abstract::Due to the increased number of revision total hip arthroplasties (THAs) to correct pain secondary to fretting from modular hip stems, this study was conducted in an effort to correlate objective findings of serum cobalt (Co) levels, serum chromium (Cr) levels, and/or reactive tissue seen on metal artifact reduction se...
journal_title:Orthopedics
pub_type: 临床试验,杂志文章
doi:10.3928/01477447-20160616-04
更新日期:2016-09-01 00:00:00
abstract::Trochanteric nonunion associated with total hip arthroplasty (THA) may result from 1 of 3 situations: 1) isolated fracture of the greater trochanter; 2) complication of trochanteric osteotomy; or 3) fracture secondary to cystic formation or osteolysis from wear debris post-THA. Isolated fracture of the greater trochan...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:2008-07-01 00:00:00
abstract::Polyhydroxyacids are a promising class of bioresorbable materials withpotential applications in spinal surgery. One such polymer, MacroPore (MacroPore Biosurgery Inc, San Diego, Calif), offers a balance of strength, predictable degradation, lack of stimulus of foreign body reaction, and biocompatibility with neural ti...
journal_title:Orthopedics
pub_type: 杂志文章,评审
doi:
更新日期:2002-10-01 00:00:00
abstract::In 1973 a workshop sponsored by the National Academy of Sciences recommended that "efforts to develop prescription criteria for use of the numerous variants of the BK prosthesis should be intensified." This paper provides a review of the important considerations in the prescription of a below-knee prosthesis. It is in...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1985-02-01 00:00:00
abstract::The purpose of this study was to compare the results of anterior approach vs posterior approach in the treatment of chronic thoracolumbar fractures. A total of 36 patients with chronic thoracolumbar fractures were divided into 2 groups. Group A was treated by an anterior approach and group B was treated by a posterior...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20120123-05
更新日期:2012-02-17 00:00:00
abstract::Hemiarthroplasty (HA) of the shoulder has several potential advantages over total shoulder arthroplasty (TSA), particularly in the elderly population. This study reviewed long-term results of HA and TSA in patients older than 70 years with glenohumeral osteoarthritis. During a 30-year period, 403 shoulders had undergo...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20180621-03
更新日期:2018-07-01 00:00:00
abstract::A multicenter, randomized, open-label, parallel-group study was conducted to compare the safety and efficacy of perioperative recombinant human erythropoietin (Epoetin alfa) with the safety and efficacy of preoperative autologous donation (PAD) in total joint arthroplasty. A total of 490 patients scheduled for total j...
journal_title:Orthopedics
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:
更新日期:1999-01-01 00:00:00
abstract::Multimodal pain management has become an important part of the perioperative care of patients undergoing total joint replacement. The principle of multimodal therapy is to use interventions that target several different steps of the pain pathway, allowing more effective pain control with fewer side effects. Many diffe...
journal_title:Orthopedics
pub_type: 杂志文章,评审
doi:10.3928/01477447-20130122-51
更新日期:2013-02-01 00:00:00
abstract::Six iliac crest bone biopsies were obtained from five patients with renal osteodystrophy and osteosclerotic lesions to investigate the mechanism of osteosclerosis in renal osteodystrophy. Each specimen was prepared in an undecalcified fashion and measured under light microscopy for routine analysis and histomorphometr...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract::There are many reports on cup placement, inclination, anteversion, and position. This article strictly defines the area of cup placement based on data from 185 healthy hip centers and Ranawat's triangle. Linear wear rate (LWR) was measured in 55 total hip arthroplasty (THA) cases and categorized as low or high. The re...
journal_title:Orthopedics
pub_type: 临床试验,杂志文章
doi:10.3928/01477447-20080301-19
更新日期:2008-03-01 00:00:00
abstract::Bleeding from the superior gluteal (SG) blood vessels at the greater sciatic notch is frequently encountered during acetabular fracture surgery. The purpose of this study is to define the positional anatomy of the superior gluteal vessels and nerve (SGVAN) at the greater sciatic notch. Twenty-three hemipelvi were diss...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20151002-62
更新日期:2015-10-01 00:00:00
abstract::Mixing implants with differing metallic compositions has been avoided for fear of galvanic corrosion and subsequent failure of the implants and of bone healing. The purpose of this study was to evaluate upper-extremity fractures treated with open reduction and internal fixation with metallic implants that differed in ...
journal_title:Orthopedics
pub_type: 杂志文章,多中心研究
doi:10.3928/01477447-20130821-21
更新日期:2013-09-01 00:00:00
abstract::Osteochondromas are common benign bone tumors. Synovial chondromatosis is a benign cartilaginous metaplasia that occurs in the synovium. The authors describe a unique case of synovial chondromatosis developing in the pes anserine bursa secondary to an underlying osteochondroma of the proximal medial tibia. It is unusu...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20140728-90
更新日期:2014-08-01 00:00:00
abstract::Twelve matched pairs of humerii were instrumented with suture anchor at 90 degrees, 75 degrees, 45 degrees, and 30 degrees relative to the cortical border at the junction of the greater tuberosity and articular surface. Two fixtures were inserted into each specimen at different angles and loaded to failure. Suture anc...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:2002-04-01 00:00:00
abstract::This study compared patients who underwent treatment with short or long cephalomedullary nails with integrated cephalocervical screws and linear compression. Patients with AO/OTA 31-A2 or A3 pertrochanteric fractures treated with either short (n=72) or long (n=97) InterTAN (Smith & Nephew, Memphis, Tennessee) cephalom...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20161116-01
更新日期:2017-03-01 00:00:00
abstract::In a prospective double blind study, 26 patients were evaluated for postoperative pain relief with use of epidural morphine. The variable in this study was the addition of paravertebral bupivacaine used in 14 patients. The addition of the bupivacaine did not have a statistically significant effect on lowering the anal...
journal_title:Orthopedics
pub_type: 临床试验,杂志文章
doi:
更新日期:1986-12-01 00:00:00
abstract::In spinal decompression and fusion surgery, a high speed burr is often used to remove bony material. The generated bone shavings are typically washed away and discarded. This study histologically examined the content of burr shavings to determine whether the collected tissue has the potential to augment local autograf...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20090101-17
更新日期:2009-01-01 00:00:00
abstract::The prevention of osteolysis is a complex problem with multiple variables. Polyethylene represents one half of the bearing surface. Femoral head size, component congruency, and bearing material play a dominant role in the generation of particulate debris. In addition to all of these variables, there is a significant i...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1994-09-01 00:00:00
abstract::Displaced isolated greater tuberosity fractures are rare injuries that require operative treatment to optimize rotator cuff function and prevent painful subacromial impingement. A lack of consensus exists regarding ideal management of these injuries because of the paucity of literature on the subject.The outcomes of 1...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20120525-17
更新日期:2012-06-01 00:00:00
abstract::Incorrect bone tunnel position, particularly on the femoral side, is a frequent cause of failed anterior cruciate ligament reconstruction. Several studies have reported that drilling the femoral tunnel through the anteromedial portal allows a more anatomical placement on the lateral femoral condyle and higher knee sta...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20120725-14
更新日期:2012-08-01 00:00:00
abstract::A simple method of extracting broken distal tibial-fibular syndesmotic or cross-locking screws for intramedullary nails is illustrated. After extraction of the head portion of the broken screw, a blunt impactor is introduced through the vacant screw hole and abutted to the remaining portion of the screw tip. The screw...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
abstract::To minimize possible complications such as patellar subluxation, quadriceps atrophy and skin tightness and slough which interfere with successful rehabilitation following knee surgery, the author employed a quadriceps dislocation medial approach for total knee arthroplasty and ligament (medial and both cruciates) surg...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1991-10-01 00:00:00
abstract::There are approximately 25 million amateur golfers in the United States, making up almost 10% of the entire US population. The purpose of this study was to evaluate short-term outcomes and rates of return to sport among recreational golfers who underwent hip arthroscopy for the treatment of labral tears. Data were pro...
journal_title:Orthopedics
pub_type: 杂志文章
doi:10.3928/01477447-20180524-02
更新日期:2018-07-01 00:00:00
abstract::Individuals experiencing post-polio sequelae (PPS) are usually advised to make significant lifestyle changes to lessen symptoms and prevent further decline in function. These individuals have spent most of their lives equating success with over-achievement and find it difficult to implement such recommendations. As sp...
journal_title:Orthopedics
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00