görkem kıyak - Academia.edu (original) (raw)

Papers by görkem kıyak

Research paper thumbnail of Halluks valgus cerrahisinde kullanılan osteotomi uygulamalarında genel prensipler

TOTBİD dergisi, Jun 26, 2024

Research paper thumbnail of Anatomic locking plate and coracoclavicular stabilization with suture endo-button technique is superior in the treatment of Neer Type II distal clavicle fractures

European Journal of Orthopaedic Surgery and Traumatology, Mar 11, 2015

Research paper thumbnail of Osteoporotik omurgada kullanılan pedikül vidası alternatiflerinin ve güçlendirme yöntemlerinin biyomekanik karşılaştırılması

Research paper thumbnail of Deformity Correction in Severe Ankylosing Spondylitis with Combined Osteotomies

Journal of Turkish Spinal Surgery, 2020

Research paper thumbnail of Treatment of Sagittal Split Olecranon Fractures Using Dorsal Plates Combined With Tension Band Wiring or Cerclage Wires

Techniques in Shoulder & Elbow Surgery, 2019

Research paper thumbnail of A review of literature: Mosaicoplasty as an alternative treatment for resection of patellar osteoid osteoma and cartilage reconstruction

Journal of Orthopaedics, 2018

Osteoid osteoma is an uncommon benign tumor and causes severe pain, being worse at night, that re... more Osteoid osteoma is an uncommon benign tumor and causes severe pain, being worse at night, that responds dramatically to nonsteroidal anti-inflammatory medications. An osteoid osteoma of the patella is very rare and if it arise close to chondral surface differential diagnosis may be challenging. In three patients the osteoid osteoma was completely excised by nidus removal by mosaicoplasty set with open surgical technique. The patients were followed up in average for 31 (16-48 months) months with annual clinical and radiographic evaluations. There were no relapse of the pain and no residual recurrent tumor. The aim of the treatment for osteoid osteoma is to remove entire nidus by open surgical excision or by percutaneous procedures such as percutaneous radiofrequency and laser ablation. Mosaicoplasty is a good alternative for treatment of osteoid osteoma of the patella in the subchondral bone.

Research paper thumbnail of Sensitivity and Specificity of Anterior Cruciate Clinical Examination in Acute Setting Before and After Hemarthrosis Aspiration

Turkiye Klinikleri Journal of Medical Sciences, 2018

Research paper thumbnail of Short Segment Spinal Instrumentation in Early-onset Scoliosis Patients Treated With Magnetically Controlled Growing Rods

Research paper thumbnail of Total hip arthroplasty without femoral osteotomy in patients who had high and low dislocation due to developmental dysplasia of the hip

Hip International, 2016

Background Various surgical techniques and outcome results have been reported after primary total... more Background Various surgical techniques and outcome results have been reported after primary total hip arthroplasty for the treatment of patients dysplastic hips. Low failure and complication rates have been reported when the acetabular component has been placed in the true acetabulum. The current study reports the results of primary total hip arthroplasty in patients with high and low dislocation for whom the acetabular component was placed in the true acetabulum without femoral or trochanteric osteotomy. Methods 26 primary total hip replacements were performed on 22 patients. The mean duration of follow-up was 8.9 years. There were 4 men and 18 women. 17 hips were classified as type B (low dislocation) and 9 as type C (high dislocation), according to the classification system of Hartofilakidis et al. Acetabular components were placed in the true acetabulum without osteotomy for all patients. Results At the time of final follow-up (mean 8.9 years) the average Harris Hip Score was 85...

Research paper thumbnail of Anatomic locking plate and coracoclavicular stabilization with suture endo-button technique is superior in the treatment of Neer Type II distal clavicle fractures

European Journal of Orthopaedic Surgery & Traumatology, 2015

Research paper thumbnail of Bicortical Versus Unicortical Pedicle Screws in Direct Vertebral Rotation

Journal of Spinal Disorders & Techniques, 2012

Research paper thumbnail of Comparison of the Pullout Strength of Different Pedicle Screw Designs and Augmentation Techniques in an Osteoporotic Bone Model

Asian Spine Journal, 2018

Study DesignMechanical study.PurposeTo compare the pullout strength of different screw designs an... more Study DesignMechanical study.PurposeTo compare the pullout strength of different screw designs and augmentation techniques in an osteoporotic bone model.Overview of LiteratureAdequate bone screw pullout strength is a common problem among osteoporotic patients. Various screw designs and augmentation techniques have been developed to improve the biomechanical characteristics of the bone–screw interface.MethodsPolyurethane blocks were used to mimic human osteoporotic cancellous bone, and six different screw designs were tested. Five standard and expandable screws without augmentation, eight expandable screws with polymethylmethacrylate (PMMA) or calcium phosphate augmentation, and distal cannulated screws with PMMA and calcium phosphate augmentation were tested. Mechanical tests were performed on 10 unused new screws of each group. Screws with or without augmentation were inserted in a block that was held in a fixture frame, and a longitudinal extraction force was applied to the screw ...

Research paper thumbnail of Comparison of proximal junctional kyphosis rate according to fusion level

Research paper thumbnail of Does Magnetically-Controlled Growing Rods Stimulate Longitudinal Vertebral Growth in Early Onset Scoliosis Patients?

Research paper thumbnail of Mid-length Pedicle Screws in Posterior Instrumentation of Scoliosis

Asian Spine Journal

We determine the need for the use of mid-length pedicle screws (screws with 2.5-mm long increment... more We determine the need for the use of mid-length pedicle screws (screws with 2.5-mm long increments) during posterior spinal instrumentation. Overview of Literature: Many biomechanical studies have been performed showing that increasing the pedicle screw insertion depth provides an improved resistance to pullout, cyclic loading, and derotational forces, but no intermediate length screws were used. Methods: We prospectively evaluated 120 patients who received posterior segmental instrumentation for structural scoliosis. Preoperatively, 91.44-cm long cassette anteroposterior (AP), lateral, and AP bending radiographs and multiplanar computed tomography were performed in all patients routinely. We measured chord length to determine the maximum probable screw length of all vertebrae. All pedicle screws were attempted to be placed as long as possible. The main intention was at least to engage the subcortical bone of the anterior vertebral cortex. Especially in the apical region, the screws were attempted to be inserted bicortically. The length, level, region, and side of each screw were recorded. Screws with 5-mm increments were called standard length screws (SLS), and middle-sized screws with 2.5-mm increments were called mid-length screws (MLS). Results: Of 2,846 pedicle screws inserted, 1,575 (55.4%) were SLS and 1,271 (44.6%) were MLS, demonstrating a need for MLS in scoliosis surgery (p<0.05). The need for MLS increased significantly in the thoracic region, apical vertebrae, and convex side (p<0.05). Conclusions: If anterior cortex engagement or longer placement of pedicle screws is intended during scoliosis surgery, for safer placement, screws with 2.5-mm increments should be available in posterior instrumentation systems.

Research paper thumbnail of Posterior longitudinal bağ ossifikasyonunun cerrahi tedavisi: anterior yaklaşım

TOTBID Dergisi

Türk Ortopedi ve Travmatoloji Birliği Derneği gözlemlenir (Tablo 1). Ancak, bu hastaların yaklaşı... more Türk Ortopedi ve Travmatoloji Birliği Derneği gözlemlenir (Tablo 1). Ancak, bu hastaların yaklaşık %15'inin bulguları akut travma sonrası başvurularında saptanır.

Research paper thumbnail of Should We Use Intermetatarsal Angle as Primary Determinant to Define the Limits of Distal Chevron Osteotomy?

The Journal of Foot and Ankle Surgery

Research paper thumbnail of Effects of the grade, stability, chronological classification and being either unilateral or bilateral of the slip on the treatment by in situ single screw fixation of patients with slipped capital femoral epiphysis

Archives of orthopaedic and trauma surgery, 2012

The effects of the grade, stability, chronological classification and being either unilateral or ... more The effects of the grade, stability, chronological classification and being either unilateral or bilateral of the slip on the outcomes of the treatment by in situ single screw fixation of the Slipped capital femoral epiphysis were investigated. 34 hips of 24 patients (7 girls, 17 boys; mean age 12.04 years; range 9-14; 14 slips acute, 7 slips acute on chronic, 13 slips chronic; 22 slips stable, 12 slips unstable; 20 slips Grade 1, 13 slips Grade 2, 1 slips Grade 3) between 2003 and 2009 were involved in the study. During the controls; range of motion, walking abnormalities, Trendelenburg test, use of assistive devices during mobilization, existence of pain and complications were evaluated. The evaluation of clinical results was made according to the average Harris Hip Score. 10 of 24 patients showed evidence of a slip of the contralateral hip on average 10.6 (6-16) months after the initial operation. At mean 41.52 ± 8.08 months controls, the Harris Hip Score was found 77.41 ± 14.66,...

Research paper thumbnail of Halluks valgus cerrahisinde kullanılan osteotomi uygulamalarında genel prensipler

TOTBİD dergisi, Jun 26, 2024

Research paper thumbnail of Anatomic locking plate and coracoclavicular stabilization with suture endo-button technique is superior in the treatment of Neer Type II distal clavicle fractures

European Journal of Orthopaedic Surgery and Traumatology, Mar 11, 2015

Research paper thumbnail of Osteoporotik omurgada kullanılan pedikül vidası alternatiflerinin ve güçlendirme yöntemlerinin biyomekanik karşılaştırılması

Research paper thumbnail of Deformity Correction in Severe Ankylosing Spondylitis with Combined Osteotomies

Journal of Turkish Spinal Surgery, 2020

Research paper thumbnail of Treatment of Sagittal Split Olecranon Fractures Using Dorsal Plates Combined With Tension Band Wiring or Cerclage Wires

Techniques in Shoulder & Elbow Surgery, 2019

Research paper thumbnail of A review of literature: Mosaicoplasty as an alternative treatment for resection of patellar osteoid osteoma and cartilage reconstruction

Journal of Orthopaedics, 2018

Osteoid osteoma is an uncommon benign tumor and causes severe pain, being worse at night, that re... more Osteoid osteoma is an uncommon benign tumor and causes severe pain, being worse at night, that responds dramatically to nonsteroidal anti-inflammatory medications. An osteoid osteoma of the patella is very rare and if it arise close to chondral surface differential diagnosis may be challenging. In three patients the osteoid osteoma was completely excised by nidus removal by mosaicoplasty set with open surgical technique. The patients were followed up in average for 31 (16-48 months) months with annual clinical and radiographic evaluations. There were no relapse of the pain and no residual recurrent tumor. The aim of the treatment for osteoid osteoma is to remove entire nidus by open surgical excision or by percutaneous procedures such as percutaneous radiofrequency and laser ablation. Mosaicoplasty is a good alternative for treatment of osteoid osteoma of the patella in the subchondral bone.

Research paper thumbnail of Sensitivity and Specificity of Anterior Cruciate Clinical Examination in Acute Setting Before and After Hemarthrosis Aspiration

Turkiye Klinikleri Journal of Medical Sciences, 2018

Research paper thumbnail of Short Segment Spinal Instrumentation in Early-onset Scoliosis Patients Treated With Magnetically Controlled Growing Rods

Research paper thumbnail of Total hip arthroplasty without femoral osteotomy in patients who had high and low dislocation due to developmental dysplasia of the hip

Hip International, 2016

Background Various surgical techniques and outcome results have been reported after primary total... more Background Various surgical techniques and outcome results have been reported after primary total hip arthroplasty for the treatment of patients dysplastic hips. Low failure and complication rates have been reported when the acetabular component has been placed in the true acetabulum. The current study reports the results of primary total hip arthroplasty in patients with high and low dislocation for whom the acetabular component was placed in the true acetabulum without femoral or trochanteric osteotomy. Methods 26 primary total hip replacements were performed on 22 patients. The mean duration of follow-up was 8.9 years. There were 4 men and 18 women. 17 hips were classified as type B (low dislocation) and 9 as type C (high dislocation), according to the classification system of Hartofilakidis et al. Acetabular components were placed in the true acetabulum without osteotomy for all patients. Results At the time of final follow-up (mean 8.9 years) the average Harris Hip Score was 85...

Research paper thumbnail of Anatomic locking plate and coracoclavicular stabilization with suture endo-button technique is superior in the treatment of Neer Type II distal clavicle fractures

European Journal of Orthopaedic Surgery & Traumatology, 2015

Research paper thumbnail of Bicortical Versus Unicortical Pedicle Screws in Direct Vertebral Rotation

Journal of Spinal Disorders & Techniques, 2012

Research paper thumbnail of Comparison of the Pullout Strength of Different Pedicle Screw Designs and Augmentation Techniques in an Osteoporotic Bone Model

Asian Spine Journal, 2018

Study DesignMechanical study.PurposeTo compare the pullout strength of different screw designs an... more Study DesignMechanical study.PurposeTo compare the pullout strength of different screw designs and augmentation techniques in an osteoporotic bone model.Overview of LiteratureAdequate bone screw pullout strength is a common problem among osteoporotic patients. Various screw designs and augmentation techniques have been developed to improve the biomechanical characteristics of the bone–screw interface.MethodsPolyurethane blocks were used to mimic human osteoporotic cancellous bone, and six different screw designs were tested. Five standard and expandable screws without augmentation, eight expandable screws with polymethylmethacrylate (PMMA) or calcium phosphate augmentation, and distal cannulated screws with PMMA and calcium phosphate augmentation were tested. Mechanical tests were performed on 10 unused new screws of each group. Screws with or without augmentation were inserted in a block that was held in a fixture frame, and a longitudinal extraction force was applied to the screw ...

Research paper thumbnail of Comparison of proximal junctional kyphosis rate according to fusion level

Research paper thumbnail of Does Magnetically-Controlled Growing Rods Stimulate Longitudinal Vertebral Growth in Early Onset Scoliosis Patients?

Research paper thumbnail of Mid-length Pedicle Screws in Posterior Instrumentation of Scoliosis

Asian Spine Journal

We determine the need for the use of mid-length pedicle screws (screws with 2.5-mm long increment... more We determine the need for the use of mid-length pedicle screws (screws with 2.5-mm long increments) during posterior spinal instrumentation. Overview of Literature: Many biomechanical studies have been performed showing that increasing the pedicle screw insertion depth provides an improved resistance to pullout, cyclic loading, and derotational forces, but no intermediate length screws were used. Methods: We prospectively evaluated 120 patients who received posterior segmental instrumentation for structural scoliosis. Preoperatively, 91.44-cm long cassette anteroposterior (AP), lateral, and AP bending radiographs and multiplanar computed tomography were performed in all patients routinely. We measured chord length to determine the maximum probable screw length of all vertebrae. All pedicle screws were attempted to be placed as long as possible. The main intention was at least to engage the subcortical bone of the anterior vertebral cortex. Especially in the apical region, the screws were attempted to be inserted bicortically. The length, level, region, and side of each screw were recorded. Screws with 5-mm increments were called standard length screws (SLS), and middle-sized screws with 2.5-mm increments were called mid-length screws (MLS). Results: Of 2,846 pedicle screws inserted, 1,575 (55.4%) were SLS and 1,271 (44.6%) were MLS, demonstrating a need for MLS in scoliosis surgery (p<0.05). The need for MLS increased significantly in the thoracic region, apical vertebrae, and convex side (p<0.05). Conclusions: If anterior cortex engagement or longer placement of pedicle screws is intended during scoliosis surgery, for safer placement, screws with 2.5-mm increments should be available in posterior instrumentation systems.

Research paper thumbnail of Posterior longitudinal bağ ossifikasyonunun cerrahi tedavisi: anterior yaklaşım

TOTBID Dergisi

Türk Ortopedi ve Travmatoloji Birliği Derneği gözlemlenir (Tablo 1). Ancak, bu hastaların yaklaşı... more Türk Ortopedi ve Travmatoloji Birliği Derneği gözlemlenir (Tablo 1). Ancak, bu hastaların yaklaşık %15'inin bulguları akut travma sonrası başvurularında saptanır.

Research paper thumbnail of Should We Use Intermetatarsal Angle as Primary Determinant to Define the Limits of Distal Chevron Osteotomy?

The Journal of Foot and Ankle Surgery

Research paper thumbnail of Effects of the grade, stability, chronological classification and being either unilateral or bilateral of the slip on the treatment by in situ single screw fixation of patients with slipped capital femoral epiphysis

Archives of orthopaedic and trauma surgery, 2012

The effects of the grade, stability, chronological classification and being either unilateral or ... more The effects of the grade, stability, chronological classification and being either unilateral or bilateral of the slip on the outcomes of the treatment by in situ single screw fixation of the Slipped capital femoral epiphysis were investigated. 34 hips of 24 patients (7 girls, 17 boys; mean age 12.04 years; range 9-14; 14 slips acute, 7 slips acute on chronic, 13 slips chronic; 22 slips stable, 12 slips unstable; 20 slips Grade 1, 13 slips Grade 2, 1 slips Grade 3) between 2003 and 2009 were involved in the study. During the controls; range of motion, walking abnormalities, Trendelenburg test, use of assistive devices during mobilization, existence of pain and complications were evaluated. The evaluation of clinical results was made according to the average Harris Hip Score. 10 of 24 patients showed evidence of a slip of the contralateral hip on average 10.6 (6-16) months after the initial operation. At mean 41.52 ± 8.08 months controls, the Harris Hip Score was found 77.41 ± 14.66,...