Abstract:
PURPOSE:Sacropelvic fixation continues to present challenges when involved in the adult spinal deformity correction. The S2 alar iliac (S2AI) fixation is commonly used in sacropelvic fixation. Several techniques, including intraoperative navigation and freehand technique, were used for S2AI screws placement. The aim of this study is to analyze the anatomic parameters for S2AI screw trajectory in Asian population and introduce a novel technique described as a three-dimensional printed template guided technique (TGT). Meanwhile, the accuracy and safety of this technique were compared with the conventional freehand technique. METHODS:The S2AI trajectory parameters were measured in 100 Asian adult volunteers. Parameters were compared between different genders. Forty-eight adult patients who underwent S2AI screw placement were reviewed: 28 patients received freehand technique and 20 patients received TGT technique. Postoperative computed tomography was used to assess the accuracy of screw trajectory and cortex violation-related complications were recorded. RESULTS:The cephalocaudal angles (CAs), maximal length of screw pathway, narrowest width of pathway within the iliar teardrop, distance from the center of teardrop to sciatic notch, and distance of the start point distal to S1 dorsal foramen showed significant gender-related difference (p < 0.05). All 48 patients were placed S2AI screws bilaterally (40 screws in TGT vs. 56 screws in freehand). One screw penetrated iliac cortex in the TGT group but 10 screws penetrated iliac cortex in the freehand group (3% vs. 17.9%) (p < 0.05). CONCLUSION:Approximately 30-35° of CA and 39° mediolateral angle are appropriate for S2AI screw placement in Asian patients. Either freehand or TGT technique is safe for S2AI screw placement. TGT technique is more accurate compared with the conventional freehand technique. TRIAL REGISTRATION:This is a retrospective study.
journal_name
J Orthop Surg (Hong Kong)journal_title
Journal of orthopaedic surgery (Hong Kong)authors
Zhou Z,Zeng Z,Yu H,Xiong J,Liu Z,Zhou R,Wan W,Pan Z,Chen L,Cao Kdoi
10.1177/2309499020967110subject
Has Abstractpub_date
2020-09-01 00:00:00pages
2309499020967110issue
3eissn
1022-5536issn
2309-4990journal_volume
28pub_type
杂志文章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:The aim of our work is to evaluate results obtained from a cohort of patients affected by periprosthetic joint infection and treated with a primary cementless stem in a two-stage technique framework. METHODS:Eighty-four patients were evaluated at a mean follow-up of 37.4 months. The main demographic, surgical,...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019853999
更新日期:2019-05-01 00:00:00
abstract:PURPOSE:To examine the long-term effects of hip arthrodesis in terms of gait adaptations. METHODS:Motion analysis was performed on 9 patients who underwent unilateral hip arthrodesis between 1979 and 1991. A standard clinical gait analysis 3-dimensional model for the lower limb was used to calculate the effect of the ...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900301100209
更新日期:2003-12-01 00:00:00
abstract:PURPOSE:To evaluate radiological and clinical outcome of minimally invasive plate osteosynthesis (MIPO) for tibial plateau fractures. METHODS:35 men and 6 women aged 19 to 75 (mean, 40; standard deviation [SD], 14) years underwent MIPO for displaced tibial plateau fractures. According to the Schatzker system, the tibi...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901202000109
更新日期:2012-04-01 00:00:00
abstract:INTRODUCTION:The purpose of this study was to evaluate the effectiveness of arthroscopic skills training. METHODS:A routine diagnostic arthroscopic exercise using a porcine knee was performed. A checklist of 10 tasks was used in the training and the time taken to complete the checklist was evaluated, and the Arthrosco...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499016684433
更新日期:2017-01-01 00:00:00
abstract:PURPOSE:This study assessed the levels of soluble tumor necrosis factor-like weak inducer of apoptosis (TWEAK) and matrix metalloproteinase 1 (MMP-1) in the synovial fluid from osteoarthritic knees to determine their role as well as the relationship between these levels and the severity of osteoarthritis (OA). METHODS...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499018760112
更新日期:2018-01-01 00:00:00
abstract:PURPOSE:The aim of this study was to assess applicability of arthroscopic technique in intramedullary nail fixation of humerus shaft fractures and to compare with conventional nailing in terms of its effects on perioperative and postoperative intra-articular complication rates as well as on clinical and functional outc...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章,随机对照试验
doi:10.1177/2309499017727949
更新日期:2017-09-01 00:00:00
abstract:INTRODUCTION:The web version of Fracture Risk Assessment (FRAX) tool is widely used in many countries to predict the 10-year probability of major osteoporotic fracture (MF) and hip fracture (HF) rate. However, other FRAX tools, calculator older version (first generation), calculator new version (second generation), and...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499020917276
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To evaluate the tibial articular cartilage and histology of the posterior cruciate ligament (PCL) in osteoarthritic knees so as to determine predictors of PCL degeneration. METHODS:23 advanced osteoarthritic knees (mean patient age, 61 years) treated with total knee arthroplasty (TKA) were prospectively studie...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901302100106
更新日期:2013-04-01 00:00:00
abstract::We report on a 30-year-old haemophilic man with a pelvic pseudotumour compressing adjacent structures causing pain and swelling and destruction of surrounding soft tissues and bones. He underwent evacuation of the pseudotumour, acetabular reconstruction using the Harrington procedure, and total hip arthroplasty. ...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901402200232
更新日期:2014-08-01 00:00:00
abstract:PURPOSE:To compare the results of screw fixation plus capsular decompression versus screw fixation alone for managing intracapsular hip fractures. METHODS:Of 201 patients with intracapsular hip fractures, 99 underwent screw fixation with capsular decompression (capsular decompression group) and 102 underwent screw fix...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900701500307
更新日期:2007-12-01 00:00:00
abstract:PURPOSE:To evaluate the role of sympathetic skin response (SSR) and three-phase bone scintigraphy (TPBS) in the diagnosis of complex regional pain syndrome (CRPS). METHODS:60 patients with CRPS of the hand were recruited. TPBS was performed using a bolus injection of 20 mCi of Tc-99m methylene diphosphonate in an ante...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900601400310
更新日期:2006-12-01 00:00:00
abstract:PURPOSE:To evaluate the relationship between posterolateral reconstruction, abductor muscle strength, and femoral offset following total hip arthroplasty. METHODS:Of 28 patients (56 limbs) we assessed, 12 underwent posterolateral reconstruction (reconstruction group) and 16 did not (non-reconstruction group). Isometri...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900401200205
更新日期:2004-12-01 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:PURPOSE:To analyse the morphology of the scapula relative to the reverse shoulder prosthesis. METHODS:Scapulas of 46 women and 27 men aged 16 to 84 (mean, 53) years with proximal humeral fractures (n=52) or recurrent antero-inferior instability (n=21) were assessed using 3-dimensional computed tomography (CT). For com...
journal_title:Journal of orthopaedic surgery (Hong Kong)
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doi:10.1177/230949900901700204
更新日期:2009-08-01 00:00:00
abstract:PURPOSE:To assess the effectiveness of a turnbuckle orthosis as a means of improving the range of motion in patients with elbow stiffness. METHODS:17 males and 11 females aged 8 to 68 (mean, 32) years underwent static progressive stretching using a turnbuckle orthosis for elbow stiffness secondary to trauma or surgery...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901001800117
更新日期:2010-04-01 00:00:00
abstract::We report 3 patients with cauda equina syndrome (CES) secondary to a sacral fracture. The difficulty in early diagnosis of CES and the lack of evidence and guidance on treatment are highlighted. When there is a sacral fracture, CES should be suspected. Thorough clinical examination including digital rectal examination...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901202000224
更新日期:2012-08-01 00:00:00
abstract::The National Institute for Health and Clinical Excellence (NICE) guidelines recommend combined mechanical and pharmacological prophylaxis to reduce the risk of venous thromboembolism (VTE) in patients undergoing orthopaedic surgery. There is increasing evidence that anti-embolic stockings (AES) have little effect on r...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章,评审
doi:10.1177/230949901302100319
更新日期:2013-12-01 00:00:00
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journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
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journal_title:Journal of orthopaedic surgery (Hong Kong)
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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::Neck manipulation is associated with spinal cord injury. However, occurrence of such cases is infrequent. This article presents a 33-year-old gentleman who sustained acute tetraplegia after neck manipulation. The aim of this case report is to create awareness that vigorous neck manipulation could cause injury to the s...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499017690459
更新日期:2017-01-01 00:00:00
abstract:PURPOSE:To evaluate 12 patients with delayed or nonunion of bones treated with bone marrow injections. METHODS:6 men and 6 women aged 15 to 70 (mean, 45) years underwent bone marrow injections for delayed union (n=2) or atrophic non-union (n=10) of the ulna (n=6), femur (n=3), humerus (n=2), or metacarpal (n=1). Bone ...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949901302100116
更新日期:2013-04-01 00:00:00
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journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499017727950
更新日期:2017-09-01 00:00:00
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journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/230949900701500104
更新日期:2007-04-01 00:00:00
abstract:PURPOSE:To review the one-year outcome after volar locking plate fixation for distal radial fractures. METHODS:Records of 22 men and 40 women aged 17 to 86 (mean, 52.5) years who underwent volar locking plate fixation for distal radial fractures were reviewed. According to the Fernandez classification, the distal radi...
journal_title:Journal of orthopaedic surgery (Hong Kong)
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journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
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更新日期:2020-09-01 00:00:00
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journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499017722438
更新日期:2017-05-01 00:00:00
abstract::The incidence of anterior cruciate ligament reconstruction (ACLR) is continuously increasing. As a result so has the need for revision ACLR, which unfortunately has worse functional outcomes and rate of return to sport. Revision ACLR can be performed as a single stage or in two stages. The latter is recommended in the...
journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
doi:10.1177/2309499019857736
更新日期:2019-05-01 00:00:00
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journal_title:Journal of orthopaedic surgery (Hong Kong)
pub_type: 杂志文章
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更新日期:2008-04-01 00:00:00