Abstract:
PURPOSE:This study analysed the accuracy and safety of the fluoroscopic guided percutaneous screws in the upper thoracic vertebrae (T1-T6). METHODS:Computed tomography scans from 74 patients were retrospectively evaluated between January 2008 and December 2012. Pedicle perforations were classified by two types of grading systems. For medial, lateral, superior and inferior perforations: grade 0 - no violation; grade 1 - <2 mm; grade 2 - 2-4 mm and grade 3 - >4 mm. For anterior perforations: grade 0 - no violation; grade 1 - <4 mm; grade 2 - 4-6 mm and grade 3 - >6 mm. RESULTS:There were 35 (47.3%) male and 39 (52.7%) female patients with a total 260 thoracic pedicle screws (T1-T6) analysed. There were 32 screw perforations which account to a perforation rate of 12.3% (11.2% grade 1, 0.7% grade 2 and 0.4% grade 3). None led to pedicle screw-related complications. The perforation rate was highest at T1 (33.3%, all grade 1 perforations), followed by T6 (14.5%) and T4 (14.0%). CONCLUSION:Fluoroscopic guided percutaneous pedicle screws of the upper thoracic spine (T1-T6) are technically more demanding and carry potential risks of serious complications. Extra precautions need to be taken when fluoroscopic guided percutaneous pedicle screws are placed at T1 and T2 levels, due to high medial pedicular angulation and obstruction of lateral fluoroscopic images by the shoulder girdle and at T4-T6 levels, due to smaller pedicular width.
journal_name
J Orthop Surg (Hong Kong)journal_title
Journal of orthopaedic surgery (Hong Kong)authors
Kwan MK,Chiu CK,Chan CYW,Zamani R,Hansen-Algenstaedt Ndoi
10.1177/2309499017722438subject
Has Abstractpub_date
2017-05-01 00:00:00pages
2309499017722438issue
2eissn
1022-5536issn
2309-4990journal_volume
25pub_type
杂志文章abstract::Plica syndrome is a pathological condition secondary to inflammation. Plicae around the knee are common and generally asymptomatic. They often are misdiagnosed. The morphology of knee plicae varies; mediopatellar plicae are the most common cause of the plicae syndrome. An intermittent dull pain is the most common symp...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章,评审
doi:10.1177/230949901101900319
更新日期:2011-12-01 00:00:00
abstract:PURPOSE:To compare the analgesic effect of preoperative ropivacaine with or without tramadol for femoral nerve block in total knee arthroplasty (TKA). METHODS:14 men and 46 women aged 59 to 80 years who were American Society of Anesthesiologists (ASA) grade I or II and were scheduled for TKA were randomised to receive...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章,随机对照试验
doi:10.1177/1602400213
更新日期:2016-08-01 00:00:00
abstract::Tibial plateau fractures are multiple fracture patterns associated with soft-tissue injuries. Among which, the combined existence of posterolateral tibial plateau depression fracture with anterior cruciate ligament (ACL) rupture has been reported rarely. Meanwhile, surgical method for the treatment of depression fract...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章,评审
doi:10.1177/2309499019891208
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To evaluate the mid-term outcome of anterior cruciate ligament (ACL) reconstruction using the medial third of the patellar tendon as the bone-patellar tendon-bone (BPTB) graft. METHODS:79 men (34 right knees and 45 left knees) aged 20 to 52 (mean, 28) years underwent ACL reconstruction using the medial third o...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901101900219
更新日期:2011-08-01 00:00:00
abstract:BACKGROUND:Our hypothesis is to utilize a simple suture-guiding device for minimally invasive repair of Achilles tendon without any extra cost with a minimal risk of rerupture. The purpose of this study is to investigate the results of our minimally invasive technique for Achilles tendon repair using a simple ovarian c...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499017739484
更新日期:2017-09-01 00:00:00
abstract:PURPOSE:Interleukin 6 (IL-6) and the acute phase C-reactive protein (CRP) blood concentrations after lumbar spine fusion may be affected by age. The purpose of this prospective observational study was to assess postoperative serum levels of pro-inflammatory IL-6 and CRP after instrumented lumbar spine fusion surgery. W...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019826406
更新日期:2019-01-01 00:00:00
abstract:PURPOSE:To examine the effectiveness of a multidisciplinary rehabilitation programme for patients with chronic low back pain in Hong Kong, and to identify factors associated with work resumption. METHODS:57 men and 8 women aged 20 to 56 (mean, 39) years who had a more than 3-month history of low back pain and were unr...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901001800201
更新日期:2010-08-01 00:00:00
abstract::Spondylolysis is a major cause of back pain in children and adolescents. The prevalence of spondylolysis depends on the sex, race, and congenital abnormality. These biases suggest hereditary predisposition as an etiology of spondylolysis. However, no conclusive evidence still exists regarding the inheritance for spond...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499017713917
更新日期:2017-05-01 00:00:00
abstract:INTRODUCTION:Defective mineralization of osteoid matrix prior to physeal closure causes rickets. Poor calcification of the cartilage matrix in the zone of provisional calcification causes flattened skull, rachitic rosary, bowed legs, coxa vara and brittle bones. The recent literature has seen an increase in the inciden...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499017693532
更新日期:2017-01-01 00:00:00
abstract:BACKGROUND:Navigation is associated with improved accuracy in alignment. However, its influence on clinical outcome is inconclusive. The aim of this study was to compare the component alignment and functional outcome in patients undergoing navigation-assisted and conventional total knee replacement (TKR). MATERIALS AN...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019848079
更新日期:2019-05-01 00:00:00
abstract::Resection and reconstruction using a vascularised fibular graft is a viable alternative treatment for congenital pseudarthrosis of the tibia, although distal junctional nonunion and residual deformity are known complications that are difficult to treat. We illustrate 2 cases in which bony union was achieved following ...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900601400114
更新日期:2006-04-01 00:00:00
abstract::PURPOSE. To investigate consultant surgeons' knowledge about the costs of implants for various joint surgeries. METHODS. Questionnaires were distributed to consultant orthopaedic surgeons at 2 hospitals. Respondents were asked to estimate the implant costs of any brand for low-demand and high-demand total hip replacem...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901402200222
更新日期:2014-08-01 00:00:00
abstract::Paediatric musculoskeletal infection remains an important cause of morbidity. Methicillin sensitive Staphylococcus aureus is still the most common organism although the incidence of methicillin resistant S. aureus in the community is rising. Osteomyelitis and septic arthritis due to Haemophilus influenzae is decreasin...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900100900116
更新日期:2001-06-01 00:00:00
abstract:BACKGROUND:The purpose of this study was to evaluate clinical and radiological outcomes and to analyze the histological findings of repaired cartilage in patients more than 50 years old with underwent fibrin-matrix autologous chondrocyte implantation (ACI). METHODS:From January 2013 to February 2014, a prospective stu...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019893509
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To compare the outcome of fixed-bearing posterior-stabilised versus cruciate-substituting prostheses in 46 patients who underwent primary bilateral total knee replacement (TKR). METHODS:Records of 35 women and 11 men aged 54 to 78 (mean, 67) years who underwent primary bilateral TKR for osteoarthritis (n=44) a...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901402200120
更新日期:2014-04-01 00:00:00
abstract:PURPOSE:To evaluate the quality of reduction and clinical outcomes by using Percutaneous Distractor and Subtalar Arthroscopy Closed Reduction followed by Internal Fixation (PDSA-CRIF) in the intra-articular calcaneal fracture. METHODS:A consecutive case series of 453 patients with 507 displaced intra-articular calcane...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499020979095
更新日期:2021-01-01 00:00:00
abstract:PURPOSE:To report the radiological and clinical results of revision total hip arthroplasty (THA) with femoral impaction bone grafting (IBG). METHODS:4 men and 9 women (15 hips) aged 38 to 84 years underwent revision THA with femoral IBG using Elite plus stems for aseptic loosening or infection. RESULTS:The mean follo...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901001800309
更新日期:2010-12-01 00:00:00
abstract:PURPOSE:Various modes of therapy have been directed at breaking the vicious cycle at early stage of synovitis in haemophilia patients. This study was planned to assess the short-term clinico-radiological outcome of chronic knee synovitis among haemophilia A patients post phosphorus-32 (P-32) radiosynoviorthesis. METHO...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499016684500
更新日期:2017-01-01 00:00:00
abstract::A 76-year-old man presented with a 4-day history of bilateral leg pain. Magnetic resonance imaging (MRI) of the lumbosacral spine revealed a spinal subarachnoid and spinal epidural haematomas. MRI of the brain revealed a chronic intracranial subdural haematoma with a midline shift. On further questioning, the patient ...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900901700323
更新日期:2009-12-01 00:00:00
abstract:BACKGROUND:First metatarsophalangeal joint (MTPJ) arthrodesis is a common treatment modality for hallux rigidus with successful outcomes. However, the effect of arthrodesis on flexor digitorum longus (FDL) is poorly understood. The purpose of this study was to investigate this effect in a biomechanical model. METHODS:...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019826325
更新日期:2019-01-01 00:00:00
abstract:PURPOSE:To assess the compression and flexural strength of bone cement mixed with 0 ml, 1 ml, or 2 ml of blood. METHODS:High viscosity polymethyl methacrylate (PMMA) loaded with or without gentamicin was used. Blood was collected from total knee arthroplasty patients. In the same operating room, one pack of cement eac...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/1602400223
更新日期:2016-08-01 00:00:00
abstract:PURPOSE:To report the outcome of fusion of the first metatarsophalangeal joint (MTPJ) using the Fyxis plate and compression screws. METHODS:Medical records of 12 men and 39 women (54 feet) aged 28 to 74 (mean, 58) years who underwent primary fusion of the first MTPJ using the Fyxis plate and compression screws for hal...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901402200110
更新日期:2014-04-01 00:00:00
abstract:PURPOSE:This study aimed to use MRI to evaluate the fibula and talus position difference in functional and mechanical ankle stability patients. METHODS:61 and 68 patients with functional and mechanical instability, and 60 healthy volunteers were involved. Based on the axial MRI images, the rotation of the talus was id...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499020984575
更新日期:2021-01-01 00:00:00
abstract::Acetabular wedge augmentation is a useful technique and is recommended in situations where cup revision is likely to be excessively difficult. Numerous augmentation designs that improve the stability of the hip are now available in the market. Occasionally, however, these devices are not readily available, particularl...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900501300221
更新日期:2005-08-01 00:00:00
abstract:PURPOSE:Joint pain is the most common symptom of osteoarthritis (OA); however, its mechanism remains unclarified. The present study investigated hindlimb motion during locomotion on the treadmill using a three-dimensional (3D) motion analysis system with high-speed cameras to evaluate whether this method can be used as...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499018768017
更新日期:2018-05-01 00:00:00
abstract:AIM:To investigate the diagnosis and treatment methods of soft tissue involvement of hydatid cysts (HCs). MATERIALS AND METHODS:Eleven patients who were diagnosed as having HC with muscular tissue (soft tissue) involvement between 2010 and 2016 were evaluated retrospectively. Seven patients had typical HC magnetic res...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019881219
更新日期:2019-09-01 00:00:00
abstract:PURPOSE:To compare anatomic, radiographic, and computed tomographic (CT) measurements of the proximal femur in an Indian population. METHODS:26 left and 24 right dried cadaveric femurs were obtained. Each femur was divided into segments at 10 cross-sectional levels from proximal to distal. At each level, anteroposteri...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901001800211
更新日期:2010-08-01 00:00:00
abstract:PURPOSE:To report the clinical, functional, and magnetic resonance imaging (MRI)-based outcomes of a novel autologous-made matrix consisting of hyaline cartilage chips combined with mixed plasma poor rich in platelets clot and plasma rich in growth factors (PRGF) for the treatment of knee full-thickness cartilage or os...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019887547
更新日期:2020-01-01 00:00:00
abstract:AIM:To determine whether a mechanical, high-frequency vibration device (Tenease™) can improve pain and function for the treatment of tennis elbow (TE), compared with standard treatment. METHODS:Adults presenting to an elbow clinic with a clinical diagnosis of TE were randomized to standard treatment with physiotherapy...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章,随机对照试验
doi:10.1177/2309499018792744
更新日期:2018-05-01 00:00:00
abstract:PURPOSE:To evaluate the operative findings and postoperative results of one-stage repair on patients with acromioclavicular joint dislocation complicated by rotator cuff tear. METHODS:Between 1992 and 1999, one-stage repair was performed on 5 patients with acromioclavicular joint dislocation complicated by rotator cuf...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900401200118
更新日期:2004-06-01 00:00:00