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Ozturk K, Nascene D. Susceptibility-Weighted Imaging of the Pediatric Brain after Repeat Doses of Gadolinium-Based Contrast Agent. AJNR Am J Neuroradiol 2021; 42:1136-1143. [PMID: 33888459 DOI: 10.3174/ajnr.a7143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/17/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Gadolinium complexes have paramagnetic properties; thus, we aimed to determine the susceptibility changes in the globus pallidus and dentate nucleus following administration of linear or macrocyclic gadolinium-based contrast agents in children. MATERIALS AND METHODS Thirty-three patients with linear gadolinium-based contrast agent gadopentetate dimeglumine administration, 33 age- and sex-matched patients with macrocyclic gadolinium-based contrast agent gadobutrol administration, and 33 age- and sex-matched control subjects without gadolinium exposure were enrolled in this retrospective study. The signal intensity on SWI and T1WI was determined in the dentate nucleus, middle cerebellar peduncle, globus pallidus, and pulvinar of the thalamus in an ROI-based analysis to calculate dentate nucleus-to-middle cerebellar peduncle and globus pallidus-to-thalamus ratios. A repeated measures ANOVA was performed to compare SWIminimum, SWImean, and T1WI signal intensity ratios between gadolinium-based contrast agent groups and control subjects. Pearson correlation analysis was performed to determine any correlation between signal intensity ratios and variables. RESULTS Dentate nucleus-to-middle cerebellar peduncle and globus pallidus-to-thalamus ratios for both SWImean and SWIminimum were lower for the linear gadolinium-based contrast agent group compared with macrocyclic gadolinium-based contrast agent and control groups (P < .05). No significant difference of the SWImean and SWIminimum ratios were noted between the macrocyclic gadolinium-based contrast agent group and the control group (P > .05). Both dentate nucleus-to-middle cerebellar peduncle and globus pallidus-to-thalamus ratios on T1WI in the linear gadolinium-based contrast agent group were higher than in the control group and the macrocyclic gadolinium-based contrast agent group (P < .05). A negative correlation was identified between SWImean and SWIminimum ratios and the number of linear gadolinium-based contrast agent administrations (dentate nucleus-to-middle cerebellar peduncle ratio: SWImean, r = -0.43, P = .005; SWIminimum, r = -0.38, P = .011; globus pallidus-to-thalamus ratio: SWImean, r = -0.39, P = .009; SWIminimum, r = -0.33, P = .017). CONCLUSIONS SWI analysis of the pediatric brain demonstrated a statistically significant decrease in SWIminimum and SWImean values for the dentate nucleus and globus pallidus after administration of linear gadolinium-based contrast agents but not macrocyclic gadolinium-based contrast agents.
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Affiliation(s)
- K Ozturk
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - D Nascene
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
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Ozturk K, Spano A, Nascene D. Evaluation of anatomical landmark position differences for head computed tomography: A reliability study among technologists. Radiography (Lond) 2021; 27:773-778. [PMID: 33384208 DOI: 10.1016/j.radi.2020.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Revised: 12/03/2020] [Accepted: 12/12/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION In computed tomography (CT) imaging protocols, lack of practice standards and variability in head positioning may all yield substantial inter-study image variance in the clinical setting which may limit the diagnostic and comparative value of subsequent scans. We aimed to evaluate repeatability of multiplanar reformatting of head CT based on the tuberculum sella (TS) to internal occipital protuberance (IOP) reference line and reduce variance. METHODS Reference lines that correspond to the TS-IOP plane on high-resolution CT scans were reviewed by technologists manually to calculate Yaw (z-rotation, rotation along the superoinferior direction), Pitch (x-rotation, rotation along the left-right direction), and Roll (y-rotation, rotation along the anteroposterior direction) angles in this pre-post design intervention study. The Yaw, Pitch, and Roll angles deviating from the reference TS-IOP in the head CT images before and after technologist training were measured with the technologists' actual graphical prescriptions, and their differences were calculated with t-tests. The intra-rater agreement was calculated using the intraclass correlation coefficient (ICC). RESULTS Mean pitch, yaw, and roll before technologist training was 6.7° ± 5.4°, 0.9° ± 1.5°, and 1.1° ± 1.2° and after training were 3.2° ± 2.6°, 0.6° ± 1.1°, and 0.6° ± 1.1°, respectively. Technologist training resulted in a significant decrease in pitch (p < 0.001) and roll (p = 0.001) inter-subject variability with respect to the TS-IOP line, however no significant difference for the yaw correction (p = 0.065) was noted. Intra-rater agreement regarding the reproducibility of TS-IOP reformation was excellent (ICC>0.950). CONCLUSION TS-IOP reference line corrected for direct roll, yaw, and pitch can be readily achieved by trained technologists. IMPLICATIONS FOR PRACTICE Adoption of the TS-IOP reference line should facilitate intra- and intermodality comparisons, leading to more reproducible and readily interpretable CT images.
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Affiliation(s)
- K Ozturk
- Department of Radiology, University of Minnesota, Minneapolis, MN, 55455, USA.
| | - A Spano
- Department of Radiology, University of Minnesota, Minneapolis, MN, 55455, USA
| | - D Nascene
- Department of Radiology, University of Minnesota, Minneapolis, MN, 55455, USA
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Baydar M, Sencan A, Adiguzel F, Orman O, Ozturk K. ADULT SINGLE FINGER FLEXOR ZONE 2 TOTAL AMPUTATION - SINGLE CENTER REPLANTATION RESULTS. Hand Microsurg 2021. [DOI: 10.5455/handmicrosurg.87398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Ozturk K, Rykken J, McKinney AM. Pediatric Acute Toxic Leukoencephalopathy: Prediction of the Clinical Outcome by FLAIR and DWI for Various Etiologies. AJNR Am J Neuroradiol 2020; 41:1517-1524. [PMID: 32616577 DOI: 10.3174/ajnr.a6624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Accepted: 04/30/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Pediatric acute toxic leukoencephalopathy is a clinicoradiologic entity comprising various etiologies. This study aimed to identify the MR imaging appearance of pediatric acute toxic leukoencephalopathy from various etiologies and determine whether the etiology correlates with clinical outcome. MATERIALS AND METHODS We retrospectively reviewed the electronic records of patients with pediatric acute toxic leukoencephalopathy younger than 19 years of age who had MR imaging within <2 weeks of presentation, including DWI and FLAIR sequences. Two neuroradiologists scored the DWI and FLAIR severity and measured the percentage ADC reduction within the visibly affected regions and normal-appearing WM. The percentage ADC reduction and DWI and FLAIR severity were correlated with clinical outcome using the Spearman correlation. RESULTS Of 22 children, 3 were excluded due to a nontoxic cause or incomplete examination. Regarding the included 19 children (mean age, 13 years), the etiologies of pediatric acute toxic leukoencephalopathy were the following: methotrexate (n = 6), bone marrow transplantation (n = 4), fludarabine (n = 3), cytarabine (n = 1), carboplatin (n = 1), vincristine (n = 1), cyclosporine (n = 1), uremia (n = 1), and bevacizumab (n = 1). Three subgroups were analyzed (chemotherapy, n = 12; immunosuppression, n = 5; others, n = 2). There was a strong correlation of FLAIR (r = 0.773, P < .001) and DWI (r = 0.851, P < .001) severity with clinical outcome, and patients treated with fludarabine had the worst outcomes. High percentage ADC reduction values were associated with adverse outcomes, and lower percentage ADC reduction values were associated with favorable outcomes (r = 0.570, P = .011). CONCLUSIONS The DWI and FLAIR severity scores appear highly prognostic, whereas percentage ADC reduction is moderately prognostic for clinical outcomes in pediatric acute toxic leukoencephalopathy. Immunosuppressive pediatric acute toxic leukoencephalopathy tends toward favorable outcomes, and fludarabine tends toward worse outcomes.
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Affiliation(s)
- K Ozturk
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota.
| | - J Rykken
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - A M McKinney
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
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Ott FW, Pluhm R, Ozturk K, McKinney AM, Rykken JB. Counterpoint: Conventional Fluoroscopy-Guided Selective Cervical Nerve Root Block-A Safe, Effective, and Efficient Modality in the Hands of an Experienced Proceduralist. AJNR Am J Neuroradiol 2020; 41:1112-1119. [PMID: 32522840 DOI: 10.3174/ajnr.a6580] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 04/07/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND PURPOSE The conventional fluoroscopy-guided (CF) selective cervical nerve root block (SCNRB) is being used commonly as a treatment for cervical radicular pain as well as a diagnostic tool. This study aimed to identify any major complications and determine the safety and clinical utility of CF-SCNRB performed in a university hospital and associated outpatient clinics. MATERIALS AND METHODS Two-hundred fifty-four conventional fluoroscopy-guided selective cervical nerve root blocks were retrospectively identified from 2011 to 2018 using a radiology report search tool. Each procedure was performed by an experienced neuroradiologist performing spinal injections on a full-time basis in clinical practice. A 10-point pain scale was used for pre- and postprocedural pain-level assessment. Successful conventional, fluoroscopy-guided, selective cervical nerve root block was defined as a patient-reported pain scale reduction of at least 50% and/or alleviation of numbness or paresthesia at ≥2 weeks postinjection. All clinically important immediate and delayed complications were also recorded. RESULTS Two-hundred fifty-four conventional fluoroscopy-guided selective cervical nerve root blocks were performed via an anterolateral approach with an average fluoroscopy time of 24.3 seconds for all cases. There were no aborted procedures and no major or permanent complications. There were 14 minor complications; 12 of these were periprocedural and resolved by the 2-week follow-up visit. One-hundred eighty-five patients (75.2%) reported pain improvement of >50% from baseline at 15 minutes postinjection. Overall, 172 patients (67.7%) reported >50% pain scale reduction or alleviation from paresthesia at least 2 weeks postinjection. CONCLUSIONS Conventional fluoroscopy-guided selective cervical nerve root block is an efficacious, efficient, and safe outpatient procedure when performed by a skilled and experienced proceduralist.
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Affiliation(s)
- F W Ott
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota.
| | - R Pluhm
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - K Ozturk
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - A M McKinney
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
| | - J B Rykken
- From the Department of Radiology, University of Minnesota, Minneapolis, Minnesota
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Ozturk K, Kastamoni Y, Dursun A, Albay S. Prevalence of the extensor digitorum, extensor digiti minimi and extensor indicis tendons and their variations. Hand Surg Rehabil 2020; 39:320-327. [PMID: 32259596 DOI: 10.1016/j.hansur.2020.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 02/19/2020] [Accepted: 02/22/2020] [Indexed: 12/17/2022]
Abstract
We aimed to investigate tendon variations of the extensor digitorum (ED), extensor digiti minimi (EDM), and extensor indicis proprius (EIP) muscles. Our study was performed on 43 fetal cadavers (86 extremities), aged between 17 and 40 weeks of gestation. The number of ED tendons varied from three to six, proximal to the extensor retinaculum (ER), and from three to eight, distal to the ER. The ED most often had four tendons, both proximally and distally from the ER. The ED tendons of the fourth finger were observed to be most frequently duplicated. The most common juncturae tendinum (JT) was type 1 in the second intermetacarpal space (IMCS), type 2 in the third IMCS, and type 3r in the fourth IMCS according to von Schroeder classification. The number of EIP and EDM tendons varied from one to two and from one to five, respectively. The EIP double tendons inserted both into the ulnar and palmar sides of the extensor digitorum of the second finger, which had not been reported in the literature. In our study, 7% of hands had variant muscles. In 4.7% of hands, the extensor indicis et medii communis was observed, while the extensor medii proprius and the extensor digitorum brevis manus were observed in 1.2% and 1.2% of hands, respectively. Knowing the prevalence of the ED, EDM and EIP tendons and their variations in the fetal period should help to treat partial loss of hand function or injury after birth and to correct congenital hand deformities.
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Affiliation(s)
- K Ozturk
- Department of Anatomy, Faculty of Medicine, Suleyman Demirel University, Çünür, Süleyman Demirel Cd, 32260 Merkez/Isparta, Turkey.
| | - Y Kastamoni
- Department of Anatomy, Faculty of Medicine, Suleyman Demirel University, Çünür, Süleyman Demirel Cd, 32260 Merkez/Isparta, Turkey.
| | - A Dursun
- Department of Anatomy, Faculty of Medicine, Suleyman Demirel University, Çünür, Süleyman Demirel Cd, 32260 Merkez/Isparta, Turkey.
| | - S Albay
- Department of Anatomy, Faculty of Medicine, Suleyman Demirel University, Çünür, Süleyman Demirel Cd, 32260 Merkez/Isparta, Turkey.
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Keskinbicki V, Sencan A, Ozturk K. AN UNUSUAL PRESENTATION OF FLOATING THUMB. Hand Microsurg 2020. [DOI: 10.5455/handmicrosurg.54923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Sencan A, Ozkan B, Keskinbicki V, Gunsoy Z, Ozturk K. A PRACTICAL TECHNIQUE FOR INTRAOPERATIVE RADIOGRAPHIC ESTIMATION OF ANGLE VALUE IN METACARPOPHALANGEAL JOINT ARTHRODESIS. Hand Microsurg 2020. [DOI: 10.5455/handmicrosurg.105960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Misir A, Ozturk K, Kizkapan TB, Yildiz KI, Gur V, Sevencan A. Fracture lines and comminution zones in OTA/AO type 23C3 distal radius fractures: The distal radius map. J Orthop Surg (Hong Kong) 2019; 26:2309499017754107. [PMID: 29366391 DOI: 10.1177/2309499017754107] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE This study was designed to define fracture lines and comminution zones in OTA/AO 23C3 distal radius fractures from axial computed tomography (CT) images that would influence surgical planning, development of new classifications, and possible implant designs. METHODS Thirty-four consecutive OTA/AO 23C3 fractures treated by a single surgeon between January 2014 and December 2014 were analyzed. For each fracture, maps of the fracture lines and zones of comminution were drawn. Each map was digitized and graphically superimposed to create a compilation of fracture lines and zones of comminution. Based on this compilation, major and minor fracture lines were identified and fracture patterns were defined. RESULTS All major fracture lines were distributed in the central region of the radius distal articular surface. There is a recurrent fracture pattern with a comminution zone including the scaphoid and lunate fossa; Lister's tubercle; and ulnar, volar, and radial zones. CONCLUSION It is important for the practicing surgeon to understand these four main fragments. Knowledge of this constant pattern should influence the development of new classifications and possible implant designs.
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Affiliation(s)
- Abdulhamit Misir
- 1 Department of Orthopaedics and Traumatology, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
| | - Kahraman Ozturk
- 2 Department of Hand and Upper Extremity Surgery, Baltalimani Bone and Joint Diseases Training and Research Hospital, Istanbul, Turkey
| | - Turan Bilge Kizkapan
- 3 Department of Orthopaedics and Traumatology, Baltalimani Bone and Joint Diseases Training and Research Hospital, Istanbul, Turkey
| | - Kadir Ilker Yildiz
- 3 Department of Orthopaedics and Traumatology, Baltalimani Bone and Joint Diseases Training and Research Hospital, Istanbul, Turkey
| | - Volkan Gur
- 1 Department of Orthopaedics and Traumatology, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
| | - Ahmet Sevencan
- 1 Department of Orthopaedics and Traumatology, Sanliurfa Training and Research Hospital, Sanliurfa, Turkey
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Ozturk K, Soylu E, Yazici Z, Ozkaya G, Savci G. Differentiation of hepatocellular carcinoma from non-hepatocellular malignant tumours of liver by chemical-shift MRI at 3 T. Clin Radiol 2019; 74:797-804. [PMID: 31300210 DOI: 10.1016/j.crad.2019.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 06/12/2019] [Indexed: 12/18/2022]
Abstract
AIM To evaluate the diagnostic performance of chemical shift magnetic resonance imaging (MRI) in distinguishing hepatocellular carcinomas (HCCs) from non-hepatocellular malignant tumours (non-HCCs) of the liver. MATERIALS AND METHODS Patients with a diagnosis of malignant liver tumours examined at 3 T MRI were included in this retrospective study. Forty-seven HCCs and 75 non-HCCs that were studied with chemical-shift MRI between January 2012 and October 2016 were retrieved from the radiology database. Two blinded observers measured the signal intensities of the tumours, adjacent normal-looking liver parenchyma, and spleen on chemical-shift MRI. The fat quantification for HCCs, non-HCCs, and adjacent normal-looking liver parenchyma were calculated by using the spleen as a reference standard. The subtraction scores were calculated by subtracting fat percentages in liver parenchyma from those in tumours. The sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the fat percentage subtraction scores in distinguishing HCCs from non-HCCs were calculated. RESULTS According to the optimal cut-off value acquired from both readers, a subtraction score >-0.26 was considered to be a HCC. Fat signal percentage subtraction scores were ≥-0.26 in 45 of 47 HCCs and were <-0.26 in 69 of 75 non-HCCs. The sensitivity, specificity, PPV, and NPV of fat signal percentage subtraction score to differentiate HCCs from non-HCCs were found to be 95.7%, 89.3%, 84.9%, and 97.1%, respectively. CONCLUSION Intracytoplasmic lipid in HCCs demonstrated by quantitative chemical-shift MRI may be a potentially powerful imaging biomarker to distinguish HCCs from the other malignant liver tumours.
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Affiliation(s)
- K Ozturk
- Department of Radiology, Uludag University Faculty of Medicine, Gorukle Street, Bursa, Turkey.
| | - E Soylu
- Department of Radiology, Uludag University Faculty of Medicine, Gorukle Street, Bursa, Turkey
| | - Z Yazici
- Department of Radiology, Uludag University Faculty of Medicine, Gorukle Street, Bursa, Turkey
| | - G Ozkaya
- Department of Biostatistics, Uludag University Faculty of Medicine, Gorukle Street, Bursa, Turkey
| | - G Savci
- Department of Radiology, Uludag University Faculty of Medicine, Gorukle Street, Bursa, Turkey
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Aykut S, Ozturk K, Sencan A, Buyuk F. Elbow Locking Caused by Annular Ligament in a Patient with Congenital Radioulnar Synostosis: A Case Report and Literature Review. Istanbul Med J 2017. [DOI: 10.5152/imj.2017.26937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Abstract
Treatment and outcome of systemic lupus erythematosus (SLE) in C1q deficient patients are rarely reported. The aim of this report is to share our experience about the course of management of three cases diagnosed as SLE with C1q deficiency, in light of present literature. Initial and dominant complaints of three cases from two different families were cutaneous manifestations. One patient was also diagnosed with arthritis and thrombocytopenia. Antinuclear antibody was positive in all cases, whereas anti-dsDNA was negative with normal levels of complement C3, C4 and decreased CH50 activity. C1QA gene of two patients had homozygous nonsense mutation (c.622 > T/p.Gln208Ter). Previously, all of them had been treated with steroids, hydroxychloroquine and methotrexate or azathioprine. It was learned that they had responded only to high dosage prednisolone and their symptoms flared up during dosage reduction even under methotrexate or azathioprine. All symptoms of all three cases improved by daily fresh frozen plasma (FFP) infusions, and once cutaneous lesions subsided, the infusions were reduced to a frequency that would prevent the flare up of the symptoms. Literature search revealed seven reports on fresh frozen plasma treatment in SLE with C1q deficient patients. In this report, it is concluded that severe cutaneous lesions, as seen in these C1q deficient SLE patients, cannot be controlled with conventional immunosuppressive treatment. Instead, regular fresh frozen plasma infusions are proposed as a more reasonable method of treatment.
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Affiliation(s)
- Z Ekinci
- 1 Kadıköy Florence Nightingale Medical Center, Istanbul, Turkey
| | - K Ozturk
- 2 Cengiz Gökçek Kadın Doğum ve Çocuk Hastalıkları Hastanesi, Gaziantep, Turkey
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Ozturk K, Turhal G, Kaya I, Aysel A, Benzer M, Korkmaz Ekren P, Akyildiz S. A comparison of two endoscopic posterior cordotomy techniques: Laser cordotomy vs diathermy-assisted cordotomy. Clin Otolaryngol 2017; 43:256-260. [PMID: 28800194 DOI: 10.1111/coa.12953] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVES To compare respiratory function, swallowing and voice quality of bilateral abductor vocal fold paralysis (BAVFP) patients undergoing laser and diathermy-assisted posterior cordotomy. DESIGN Prospective study. SETTING Tertiary academic hospital. PARTICIPANTS Thirty patients were included in the study (groups 1 and 2, 15 patients each). Mean age was 53 ± 14.27 years with a range of 31-78 years (12 [40%] males, 18 [60%] females). MAIN OUTCOME MEASURES Sufficient airway, complications, FEV1, FEV1/FVC, peak expiratory flow rate (PEF), voice quality VAS, fundamental frequency, jitter, shimmer, NHR, amplitude perturbation quotient (APQ) and pitch perturbation quotient (PPQ) scores. RESULTS A sufficient laryngeal airway was achieved in all patients. Six patients (20%) developed postoperative granulation tissue (2 in group 1 and 4 in group 2). There was a statistically significant improvement in FEV1, FEV1/FVC and PEF measurements at the postoperative sixth month compared to preoperative measurements in both of the groups (P < .05). Preoperative median voice quality VAS scores in groups 1 and 2 were 8 (IQR = 1) and 8 (IQR = 3), respectively. Postoperative sixth-month voice quality VAS scores in groups 1 and 2 were 6 (IQR = 1) and 6 (IQR = 0), respectively. Postoperative VAS scores were significantly lower in both groups (P < .05). The postoperative changes in fundamental frequency, NHR, jitter, shimmer, APQ and PPQ were not statistically significant in both of the groups (P > .05). CONCLUSIONS Laser and diathermy-assisted posterior cordotomy are both minimally invasive, effective techniques with a long-term sufficient laryngeal airway. Despite lower quality of voice VAS scores, objective acoustic outcomes were not significantly lower in both of the groups.
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Affiliation(s)
- K Ozturk
- Department of Otolaryngology, Ege University School of Medicine, Izmir, Turkey
| | - G Turhal
- Department of Otolaryngology, Ege University School of Medicine, Izmir, Turkey
| | - I Kaya
- Department of Otolaryngology, Ege University School of Medicine, Izmir, Turkey
| | - A Aysel
- Department of Otolaryngology, Ege University School of Medicine, Izmir, Turkey
| | - M Benzer
- Department of Otolaryngology, Ege University School of Medicine, Izmir, Turkey
| | - P Korkmaz Ekren
- Department of Pulmonology, Ege University School of Medicine, Izmir, Turkey
| | - S Akyildiz
- Department of Otolaryngology, Ege University School of Medicine, Izmir, Turkey
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Sencan A, Baydar M, Ozturk K, Orman O. Selfie stick: An extension of the photographer's hand in operation room conditions. Indian J Plast Surg 2017; 50:115-116. [PMID: 28615827 PMCID: PMC5469224 DOI: 10.4103/ijps.ijps_187_16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Ayse Sencan
- Division of Hand Surgery, Bagcilar Teaching and Research Hospital, Istanbul, Turkey
| | - Mehmet Baydar
- Baltalimani Bone Diseases Teaching and Research Hospital, Hand Surgery Clinic, Istanbul, Turkey
| | - Kahraman Ozturk
- Baltalimani Bone Diseases Teaching and Research Hospital, Hand Surgery Clinic, Istanbul, Turkey
| | - Osman Orman
- Baltalimani Bone Diseases Teaching and Research Hospital, Hand Surgery Clinic, Istanbul, Turkey
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Ozturk I, Baydar M, Kose A, Orman O, Ozturk K. Traumatic simultaneous closed avulsion of the both flexor tendons in the fourth finger. Hand Microsurg 2017. [DOI: 10.5455/handmicrosurg.249107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Dogan N, Nas OF, Canver B, Ozturk K, Gokalp G. Selective bilateral renal artery embolization with tris-acryl microspheres in focal segmental glomerulosclerosis. Diagn Interv Imaging 2016; 98:277-278. [PMID: 27663140 DOI: 10.1016/j.diii.2016.06.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 06/18/2016] [Accepted: 06/20/2016] [Indexed: 12/14/2022]
Affiliation(s)
- N Dogan
- Radiology Clinic, Private Bahar Hospital, Bursa, Turkey.
| | - O F Nas
- Department of Radiology, Uludag University, Faculty of Medicine, Gorukle Campusu, 16059 Bursa, Turkey.
| | - B Canver
- Nephrology Clinic, Bursa State Hospital, Bursa, Turkey.
| | - K Ozturk
- Department of Radiology, Uludag University, Faculty of Medicine, Gorukle Campusu, 16059 Bursa, Turkey.
| | - G Gokalp
- Department of Radiology, Uludag University, Faculty of Medicine, Gorukle Campusu, 16059 Bursa, Turkey.
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Demiroglu M, Sencan A, Kilic B, Gurun U, Aykut S, Ozturk K. Preiser's disease in a five-fingered hand. Curr Med Res Opin 2016; 32:1585-8. [PMID: 27181331 DOI: 10.1080/03007995.2016.1190702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Preiser's disease, also known as idiopathic avascular necrosis of the scaphoid, and five-fingered hand are rare hand conditions. In this report, we present a case of a 25 year old female patient who had avascular necrosis of the scaphoid and five-fingered hand.
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Affiliation(s)
| | - Ayse Sencan
- b Bagcilar Training and Research Center , Istanbul , Turkey
| | | | - Utku Gurun
- b Bagcilar Training and Research Center , Istanbul , Turkey
| | - Serkan Aykut
- d Metin Sabanci Baltalimani Bone Diseases Training and Research Hospital , Istanbul , Turkey
| | - Kahraman Ozturk
- d Metin Sabanci Baltalimani Bone Diseases Training and Research Hospital , Istanbul , Turkey
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Ozturk K, Demirci H, Kurt O, Kantarcioglu M. Associated factors with atherosclerosis in hepatitis C infection. Intern Med J 2016; 46:862-3. [DOI: 10.1111/imj.13033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 12/22/2015] [Indexed: 11/29/2022]
Affiliation(s)
- K. Ozturk
- Department of Gastroenterology; Gulhane School of Medicine; Ankara Turkey
| | - H. Demirci
- Department of Gastroenterology; Gulhane School of Medicine; Ankara Turkey
| | - O. Kurt
- Department of Gastroenterology; Gulhane School of Medicine; Ankara Turkey
| | - M. Kantarcioglu
- Department of Gastroenterology; Gulhane School of Medicine; Ankara Turkey
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Cinar M, Cakar M, Ozturk K, Yilmaz S, Dinc A. FRI0501 Investigation of Joint Hypermobility in Individuals with Indirect Hyperbilirubinemia and Acrocyanosis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Demiroglu M, Ozturk K, Baydar M, Kumbuloglu OF, Sencan A, Aykut S, Kilic B. Results of screw fixation in Mason type II radial head fractures. Springerplus 2016; 5:545. [PMID: 27186508 PMCID: PMC4848274 DOI: 10.1186/s40064-016-2189-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 04/19/2016] [Indexed: 11/10/2022]
Abstract
PURPOSE The treatment of Mason type II fractures is controversial, and the aim of our study is to define the outcome of surgical treatment with screw fixation in the Mason type II radial head fracture. METHODS The study was carried out between 2011 and 2015, and included 14 men and 9 women, with isolated Mason type II radial head fractures which were treated operatively with screw fixation. Cases involving the additional ligament injury or fractures in other areas, or having a follow-up period which is greater than 11 months were excluded. The clinical and radiological results of our patients were assessed, using the Mayo Elbow Performance Score (MEPS). RESULTS The average MEPS was 95.86 points. 100 degree arcs of motion were attained by a total of 21 patients (91 %) for both flexion-extension and pronation-supination. Nevertheless, 2 patients (9 %) did not recover the 100 degree arcs for the flexion-extension. CONCLUSION Anatomical reduction of type II radial head fractures through open surgery and fixation with screws can have favorable results. LEVEL OF EVIDENCE Level IV, Retrospective design.
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Affiliation(s)
- Murat Demiroglu
- Department of Orthopaedics, Göztepe Training and Research Hospital, Medeniyet University, Dr. Erkin Cad. Kadıkoy, Istanbul, Turkey
| | - Kahraman Ozturk
- Hand Surgery Department, MS Baltalimani Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Baydar
- Hand Surgery Department, MS Baltalimani Training and Research Hospital, Istanbul, Turkey
| | - Omer F Kumbuloglu
- Hand Surgery, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Ayse Sencan
- Hand Surgery, Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Serkan Aykut
- Hand Surgery Department, MS Baltalimani Training and Research Hospital, Istanbul, Turkey
| | - Bulent Kilic
- Gelisim University Health Sciences, Istanbul, Turkey
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Midilli R, Gode S, Ozturk K. The "two-point" technique for endoscopic sphenopalatine artery cauterization: is it effective and safe? Hippokratia 2015; 19:284. [PMID: 27418797 PMCID: PMC4938485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- R Midilli
- Ege University Medical School, Otolaryngology Department, Izmir, Turkey
| | - S Gode
- Ege University Medical School, Otolaryngology Department, Izmir, Turkey
| | - K Ozturk
- Ege University Medical School, Otolaryngology Department, Izmir, Turkey
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Ekinci Z, Ozturk K, Anik Y. AB1031 A Rare Cause of Myopathy: Inflammatory Myopathy with Abundant Macrophages in a Child. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ozturk K, Ekinci Z. FRI0521 Serum Amyloid a in Familial Mediterranean Fever: How Much Important?: Table 1. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ozturk K, Demirci H, Sakin YS, Uygun A, Bagci S. Efficiency of rifampicin in emergency treatment of severe hyperbilirubinemia : report of two cases and review of literature. Acta Gastroenterol Belg 2015; 78:256-258. [PMID: 26151703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We showed in this study that rifampicin therapy is more effective than plasmapheresis and steroid treatment in diseases associated with severe hyperbilirubinemia. In our opinion, rifampicin treatment may suitable especially for patients with persistent hyperbilirubinemia, and it would be appropriate to use rifampicin as a challenge therapy to patients with severe hyperbilirubinemia, but liver function tests in these patients must be monitored closely.
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Ozturk K, Tasci I, Yasar M, Akay C, Alcigir M, Vural S, Mas MR, Turker T, Saglam K. Effects of rapamycin treatment on pancreatic fibrosis, cellular apoptosis and oxidative stress in experimental chronic pancreatitis model. Acta Gastroenterol Belg 2015; 78:3-7. [PMID: 26118571 DOI: pmid/26118571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE Rapamycin reduces hepatic fibrosis by inhibiting hepatic stellate cell activation. The present study investigated whether rapamycin treatment could modify the degree of fibrosis, cellular apoptosis and oxidative stress (OS) in an experimental model of CP. METHODS Fifty-five male, Sprague-Dawley rats weighing 200-400g were randomized into four groups. CP was induced by intraductal trinitrobenzene sulfonic acid (TNBS) infusion in group A (n = 15) and group B (n = 15). Group C (n = 15) received intraductal TNBS and was killed for histologic confirmation at four weeks. Group D (n = 10) received intraductal saline instead of TNBS. Group A and group D received oral rapamycin (2 mg/kg/d) for two weeks after CP was induced while group B received oral tap water instead of rapamycin. Blood and pancreatic tissue specimens were collected and oxidative stress parameters, fibrosis and cellular apoptosis were determined. RESULTS Tissue and blood malondialdehyde (MDA) levels were significantly lower in rapamycin treated group compared to controls (p < 0.001). Superoxide dismutase (SOD) and glutathion peroxidase (GSH-Px) activities were also significantly higher in the active treatment group (p < 0.001 for both). Tissue and blood MDA, SOD, GSH-Px measurements was similar in rapamycin group and pancreatic cannulation group (p > 0.05). Histopathologic fibrosis scores were similar in rapamycin and control groups. Apoptotic cell counts tended to be lower in rapamycin treated animals. CONCLUSIONS Administration of rapamycin alleviated OS and, in part, prevented apoptotic cell death in experimental CP, but did not reduce fibrosis.
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Mirzanli C, Esenyel CZ, Ozturk K, Baris A, Imren Y. Cerebrotendinous xanthomatosis presenting with bilateral achilles tendon xanthomata: a case report. J Am Podiatr Med Assoc 2014; 103:152-5. [PMID: 23536508 DOI: 10.7547/1030152] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Xanthomas are described as deposits in the skin and subcutaneous tissues. Mostly known as pseudotumors, xanthomas consist of connective tissue containing mainly cholesterol, triglycerides, and numerous foamy macrophages. Bilateral Achilles tendon xanthomata is pathognomonic for cerebrotendinous xanthomatosis in the case of normal cholesterol levels but increased cholestanol levels in serum. In this article, we present findings regarding bilateral xanthomas of Achilles tendons in a patient with cerebrotendinous xanthomatosis.
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Affiliation(s)
- Cuneyt Mirzanli
- Department of Orthopaedics and Traumatology, Vakif Gureba Research and Training Hospital, Istanbul, Turkey.
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Gezer M, Tasci I, Demir O, Acikel C, Cakar M, Saglam K, Kutsi Kabul H, Fatih Bulucu M, Acar R, Ozturk K, Inanc Dogan M, Koc B. Low frequency of a decreased ankle brachial index and associated conditions in the practice of internal medicine in a Turkish population sample. INT ANGIOL 2012; 31:454-461. [PMID: 22990508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
AIM Peripheral arterial disease (PAD) is a less known condition in the practice of internal medicine, mostly due to lack of specific symptoms and low rates of physician awareness. However, cardiovascular disease (CVD) incidence is not significantly different among patients with symptomatic or asymptomatic disease. Ankle brachial index (ABI) measurement is an easy and cost-effective tool for the diagnosis of PAD. In the present study, frequency of low ABI and associated factors were investigated in the setting of internal medicine practice. METHODS Patients over 70 years of age and patients between 50 and 69 years with CVD or at least one atherothrombosis risk factor were included in the study. ABI was determined with handheld Doppler. Measurements were determined for both lower extremities. Lower of the right or left ABIs was taken as the final value. Low ABI was defined as ≤0.9. RESULTS A total of 303 subjects between 50 and 83 years of age were enrolled (female/male: 186/117). Mean ABI was 1.14±0.15. A low ABI was detected in 15 cases (4.95%). Prevalence was 7% in females and 1.7% in males (P=0.039). Low ABI value was not associated with any of the demographic parameters, presence of major risk factors or basic laboratory values. A high ABI was found by 5.6%. CONCLUSION In the present study, frequency of PAD as determined by ABI was found lower than those reported previously in most European countries. Nonetheless, our results showed that PAD affects at least 1 in 20 outpatients in the practice of internal medicine.
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Affiliation(s)
- M Gezer
- Department of Internal Medicine, Gulhane School of Medicine, Ankara, Turkey
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Mirzanli C, Ozturk K, Esenyel CZ, Ayanoglu S, Imren Y, Aliustaoglu S. Accuracy of intrasheath injection techniques for de Quervain's disease: a cadaveric study. J Hand Surg Eur Vol 2012; 37:155-60. [PMID: 21593074 DOI: 10.1177/1753193411409126] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The purpose of this study was to assess the accuracy of injections of dye into the first extensor compartment of the wrist using three different techniques in 150 wrists in 75 fresh cadavers. To compare injections, 50 wrists from 25 cadavers were used for each technique. After the injections, the first extensor compartment was dissected and the dispersion of dye around the abductor pollicis longus and extensor pollicis brevis tendons was investigated. In 72 % of all the wrists, acrylic dye was dispersed into one compartment containing both the abductor pollicis longus and extensor pollicis brevis tendons, but in 28% of the wrists there was a separate compartment for extensor pollicis brevis and dye entered only one of the compartments (14% for each compartment). For accurate injections, we think the injections should be made separately over the two tendons, to allow for the possibility of a septum within the compartment.
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Affiliation(s)
- C Mirzanli
- Vakif Gureba Training and Research Hospital, Orthopaedics and Traumatology Department, Adnan Menderes Bulvarı, Istanbul, Turkey.
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Uzun M, Bulbul M, Ozturk K, Ayanoğlu S, Adanir O, Gürbüz H. Surgical treatment of mallet fractures by extension block Kirschner wire technique surgical treatment of mallet fractures. Acta Ortop Bras 2012; 20:297-9. [PMID: 24453621 PMCID: PMC3718447 DOI: 10.1590/s1413-78522012000500010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 04/10/2012] [Indexed: 11/22/2022]
Abstract
OBJECTIVE We use the extension block Kirschner wire method that orginated from Ishigura to treat mallet fracture and evaluate its efficiency. METHODS 38 patients were treated prospectively. Mean follow-up was 18 months and all patients evaluated radiologically and clinically according to Crawford's criteria. RESULTS Union was obtained in all patients. The results obtained were satisfactory in 34 cases, unsatisfactory 4 cases. CONCLUSION We think that extension block technique is a safe and effective method that can be used in all mallet fractures. LEVEL OF EVIDENCE Level IV, Case series .
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Affiliation(s)
| | - Murat Bulbul
- Vakif Gureba Teaching and Research Hospital, Turkia
| | | | | | | | - Hakan Gürbüz
- Vakif Gureba Teaching and Research Hospital, Turkia
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Demir B, Gursu S, Ozturk K, Yildirim T, Konya MN, Er T. Single-stage treatment of complete dislocation of radial head and forearm deformity using distraction osteogenesis in paediatric patients having multiple cartilaginous exostosis. Arch Orthop Trauma Surg 2011; 131:1195-201. [PMID: 21298437 DOI: 10.1007/s00402-011-1261-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND We are reporting the results of single-stage treatment for patients with forearm deformity and radial head luxation due to hereditary multiple exostosis using distraction osteogenesis. METHOD Six patients with a mean age of 12 years were treated. Morphological evaluation was made according to Masada (3 of the cases were 2a and 3; 2b). Angular deformities of forearm and wrist were evaluated as described by Fogel (distal radial joint angle was 27°, ulnar variance was 12.8 mm and carpal slip was 71.3%). Mean forearm pronation was 48.4° whilst mean supination was 19.2°. Mean elbow range of motion was 26.6°-103.4° and the mean DASH score was 75. Common surgical procedures were deformity correction, ulnar lengthening and gradual radial head reduction using external fixators. RESULTS Mean follow-up period was 4.2 years and mean external fixation time was 6 months. Mean amount of ulnar lengthening was 2.9 cm and the distraction index was 14.9 cm/day. Mean radial articular angle was 14.3°, ulnar variance 2.3 mm, carpal slip 55%, forearm pronation 65.9° and supination was 55°. Mean elbow range of motion was 15.8°-119.2°. In the last follow-up, the mean value of DASH score was 8.1. Major and minor complications were seen during the follow ups. CONCLUSIONS Single-stage deformity correction, ulnar lengthening and radial head reduction technique that we have used provide satisfactory functional and cosmetic results. Early surgical correction may lead to even better results.
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Affiliation(s)
- Bilal Demir
- Baltalimani Metin Sabanci Bone and Joint Diseases Education and Research Hospital, Istanbul, Turkey.
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Ozturk K, Bülbül M, Demir BB, Büyükkurt CD, Ayanoğlu S, Esenyel CZ. Reconstruction of shoulder abduction and external rotation with latissimus dorsi and teres major transfer in obstetric brachial plexus palsy. Acta Orthop Traumatol Turc 2011; 44:186-93. [PMID: 21088458 DOI: 10.3944/aott.2010.2332] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES We evaluated the results of latissimus dorsi and teres major tendon transfer to the rotator cuff together with musculotendinous lengthening of the subscapularis and/or pectoralis major muscles in patients with internal rotation contracture and decreased external rotation and abduction secondary to obstetrical brachial plexus palsy. METHODS Thirty patients (18 boys, 12 girls; mean age 9 years; range 4 to 15 years) with internal rotation contracture and loss of external rotation and abduction of the shoulder secondary to obstetrical brachial plexus palsy underwent transfer of the latissimus dorsi/teres major tendons to the rotator cuff. In addition, musculotendinous lengthening of the subscapularis and pectoralis major (n=15), pectoralis major (n=9), and subscapularis (n=6) were performed. Nine patients had upper plexus involvement (C5-6), 14 had C5-7 involvement, and seven had complete plexus involvement (C5-T1). According to the Waters and Peljovich classification, all the patients had a congruent glenohumeral joint, which was classified as type 1 in one patient, type 2 in 15 patients, and type 3 in 14 patients. Pre- and postoperative range of motion values of the patients were measured and their motor functions were evaluated with the Mallet scoring system. The mean follow-up period was 47.8 months (range 9 to 84 months). RESULTS Preoperatively, the mean active abduction was 75.8°, and the mean active external rotation was 25.2°. Postoperatively, the mean abduction and external rotation increased to 138.3° (by 62.5°, 82.5%) and 76.4 degrees (by 51.2°, 203.2%), respectively. Improvements in the degrees of abduction and external rotation were significant (p=0.000). According to the Mallet scoring system, the mean preoperative global abduction and global external rotation scores were 2.97 and 2.43, respectively; the mean Mallet scores for the ability to move the hand to the mouth, neck, and back were 2.50, 2.17, and 2.67, respectively. Postoperatively, the mean global abduction score increased to 3.97 (by 33.7%, p=0.000), and the mean global external rotation score increased to 3.77 (by 55.1%, p=0.000). The mean scores for the ability to move the hand to the mouth, neck, and back were 3.30 (increased by 32%, p=0.000), 3.73 (increased by 71.9%, p=0.000), and 2.30 (decreased by 13.9%, p=0.003), respectively. Postoperative changes in the Mallet scores were all significant. Improvements in abduction and external rotation were not significant between patients ≤ 9 years and > 9 years of age (p > 0.05). CONCLUSION Transfer of the latissimus dorsi and teres major tendons to the rotator cuff combined with musculotendinous lengthening of the subscapularis and/or pectoralis major provides satisfactory increases in shoulder abduction and external rotation, regardless of the age, in patients with no or minimal glenohumeral joint incongruency.
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Jankowski V, Patzak A, Herget-Rosenthal S, Zidek W, Jankowski J, Jankowski V, Toelle M, van der Giet M, Zidek W, Jankowski J, Bae EH, Ma SK, Lee J, Kim SW, Jin K, Kim HJ, Vaziri ND, Osaki K, Suzuki Y, Sugaya T, Nishiyama A, Horikoshi S, Tomino Y, Matthesen SK, Gjoerup PH, Larsen T, Lauridsen TG, Nykjaer KM, Vase H, Pedersen EB, Jin K, Kim YW, Fujimori A, Yuyama H, Takakura K, Tahara A, Koakutsu A, Sanagi M, Sudoh K, Terada Y, Takakura K, Mizukami K, Miura M, Yokoyama K, Amano Y, Furukawa T, Tomura Y, Uchida W, Walkowska A, Kompanowska-Jezierska E, Sadowki J, Ozdemir ZN, Sener G, Ozgur S, Koc M, Suleymanoglu S, Yegen B, Efrati S, Berman S, Abu-Hamad R, Siman-Tov Y, Weissgarten J, Hermida RC, Ayala DE, Mojon A, Chayan L, Dominguez MJ, Fontao MJ, Alonso I, Fernandez JR, Hermida RC, Ayala DE, Mojon A, Fernandez JR, Hermida RC, Ayala DE, Fontao MJ, Mojon A, Chayan L, Dominguez MJ, Fernandez JR, Zanoli L, Alivon M, Estrugo N, Ketthab H, Pruny JF, Yanes S, Bean K, Empana JP, Jouven X, Laude RD, Laurent S, Boutouyrie P, Botticelli I, Quartagno R, Venturini M, Salvioni M, Lanzani C, Simonini M, Delli Carpini S, Zagato L, Manunta P, Blazquez-Medela AM, Garcia-Ortiz L, Gomez-Marcos MA, Recio-Rodriguez JI, Martin-Hinojal M, Rodriguez-Martin C, Castano-Sanchez C, de Cabo-Laso A, Sanchez-Salgado B, Lopez-Novoa JM, Martinez-Salgado C, Villevalde S, Tyukhmenev E, Klimenko A, Kobalava Z, Shin SJ, Oh SW, Rhee MY, Schneider M, Janka R, Raff U, Ritt M, Ott C, Uder M, Schmieder R, Ayala DE, Hermida RC, Golan E, Bernheim J, Podjarny E, Ozturk K, Bulucu F, Gezer M, Kilic S, Steele A, Rene de Cotret P, Hubert M, Leclerc JM, Tran L, Rigal R, Larsen T, Christensen FH, Bech JN, Pedersen EB, Raju B, Nirmala VR, Vijayalakshmi J, Kalaiselvi M, Rekha K, Paiva CE, Leone Aguiar AF, Coelho EB, Irzyniec T, Jez W, Paterno JC, Jara ZP, Barrinha FF, Freire AO, Casarini DE, Teixeira VDPC, Kose E, Can E, Alparslan C, Dogan A, Bal A, Demir BK, Anil M, Anil AB, Yavascan O, Aksu N, Villevalde S, Tyukhmenev E, Klimenko A, Kobalava Z, Irzyniec T, Prusek J, Szypula M, Grun O, Jeken J, Cremers B, Steimle C, Kersting S, Fliser D, Heine G, Hermida RC, Ayala DE, Fontao MJ, Mojon A, Fernandez JR, Pillar R, Lopes MGG, Cuppari L, Carvalho AB, Canziani MEF, Lipkowska K, Blumczynski A, Soltysiak J, Silska M, Poprawska A, Musielak A, Zaniew M, Zachwieja J, Labrador PJ, Gonzalez Castillo PM. Hypertension & hormones. Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cirpanli Y, Yerlikaya F, Ozturk K, Erdogar N, Launay M, Gegu C, Leturgez T, Bilensoy E, Calis S, Capan Y. Comparative evaluation of in vitro parameters of tamoxifen citrate loaded poly(lactide-co-glycolide), poly(epsilon-caprolactone) and chitosan nanoparticles. Pharmazie 2010; 65:867-870. [PMID: 21284254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Tamoxifen (TAM), the clinical choice for the antiestrogen treatment of advanced or metastatic breast cancer, was formulated in nanoparticulate carrier systems in the form of poly(lactide-co-glycolide) (PLGA), poly-epsilon-caprolactone (PCL) and chitosan (CS) nanoparticles. The PLGA and PCL nanoparticles were prepared by a nanoprecipitation technique whereas the CS nanoparticles were prepared by the ionic gelation method. Mean particle sizes were under 260 nm for PLGA and PCL nanoparticles and around 400 nm for CS nanoparticles. Polydispersity indices were less than 0.4 for all formulations. Zeta potential values were positive for TAM loaded nanoparticles because of the positive charge of the drug. Drug loading values were significantly higher for PCL nanoparticles when compared to PLGA and CS nanoparticles. All nanoparticle formulations exhibited controlled release properties. These results indicate that TAM loaded PLGA, PCL and CS nanoparticles may provide promising carrier systems for tumor targeting.
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Affiliation(s)
- Y Cirpanli
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
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Ozturk K, Caban S, Kozlu S, Kadayifci E, Yerlikaya F, Capan Y. The influence of technological parameters on the physicochemical properties of blank PLGA nanoparticles. Pharmazie 2010; 65:665-669. [PMID: 21038843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In this work, PLGA nanoparticles were prepared by an emulsification-diffusion technique. The main objective was to optimize the preparation of formulations by evaluating the influence of the technological parameters on the physicochemical properties of PLGA nanoparticles. The effects of variations in polymer and emulsifier concentrations, and homogenization duration, rate and type on the particle size distribution, surface charge and morphology of nanoparticles were assessed. The smallest nanoparticles (177.53 +/- 2.78 nm) were obtained with a 2% PLGA (w/v) concentration in the organic phase and 3% PVA (w/v) in the aqueous phase and were prepared by an emulsification-diffusion method via ultrasonic homogenization at a power of 80 W applied for 30 s. It was observed that nanoparticles prepared by Ultra Turrax were more spherical but larger. In addition, increasing the PVA concentration in the aqueous phase, increasing the PLGA concentration in the organic phase and increasing the homogenization rate decreased the zeta potential values of PLGA nanoparticles.
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Affiliation(s)
- K Ozturk
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
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Bozkurt MK, Keles B, Azimov A, Ozturk K, Arbag H. The use of adjunctive topical mitomycin in endoscopic congenital choanal atresia repair. Int J Pediatr Otorhinolaryngol 2010; 74:733-6. [PMID: 20394996 DOI: 10.1016/j.ijporl.2010.03.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2009] [Revised: 03/11/2010] [Accepted: 03/12/2010] [Indexed: 10/19/2022]
Abstract
OBJECTIVE To evaluate the efficacy of topical mitomycin in providing the patency of the neochoanae in children undergoing transnasal endoscopic congenital choanal atresia (CA) repair. METHODS A retrospective analysis of surgical results in CA patients who were treated in Selcuk University, Meram Medical Faculty, Department of Otolaryngology between November 2002 and November 2009 was performed. All patients underwent transnasal endoscopic approach using nasal telescopes and traditional sinus instrumentation together with a microdebrider. Mitomycin was used according to the senior surgeon's preference, and certainly not in a randomized fashion. After completion of surgery, mitomycin 0.4 mg/ml was applied to the neochoanae for 3 min. Postoperative stenting was performed in all patients. RESULTS CA was unilateral in 8 subjects (mean age 71.8+/-41.7 months; range 18 months-144 months) and bilateral in 12 subjects (mean age 4.6+/-1.3 days; range 3-7 days). Among the subjects, 75% was female in both groups. Fourteen subjects under endoscopic repair without mitomycin, whereas mitomycin was used in 6 patients (4 bilateral, 2 unilateral). Stents were left at least 3 weeks postoperatively (mean 31+/-10 days; range 21-45 days). The patients were followed-up at least 6 months (range 6-72 months). No symptomatic restenosis requiring further dilatations was seen in patients treated with preoperative mitomycin, whereas restenosis was detected in 6 subjects (42.9%) treated without mitomycin postoperatively within 6 months period (Fisher's Exact Test 2-sided, p=0.12). These subjects underwent revision endoscopic repair with mitomycin and had no need for further dilatations with acceptable control of symptoms during a follow-up period ranging between 14 and 78 months. CONCLUSION Mitomycin improves the surgical treatment outcome of CA and reduces the rate of restenosis significantly without any complications. However, further prospective randomized studies are needed to fully investigate the benefits of mitomycin therapy in CA surgery.
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Affiliation(s)
- M K Bozkurt
- Department of Otolaryngology Head and Neck Surgery, Selçuk University, Meram Medical Faculty, Konya, Turkey.
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Esenyel CZ, Ozturk K, Demirhan M, Sonmez M, Kahraman S, Esenyel M, Ozbaydar MU, Senel B. Accuracy of anterior glenohumeral injections: a cadaver study. Arch Orthop Trauma Surg 2010; 130:297-300. [PMID: 19139912 DOI: 10.1007/s00402-008-0811-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Indexed: 02/09/2023]
Abstract
PURPOSE Intra-articular glenohumeral injections have an important role for therapeutic benefit and diagnostic information. Therefore, it is very important that the injected material should reach its desired target. This study assessed the accuracy of an anterior intra-articular injection in fresh cadavers. METHODS A total of 50 shoulders of 25 fresh cadavers were included in the study. Anterior placement of a spinal needle using a location just 1 cm lateral to the coracoid, without radiographic assistance were performed. After the needle was placed and estimated to be intra-articular 1 cc of acrylic dye was injected into the joint to determine accuracy of position. RESULTS Ninety-six percent of injections were accurately administered into the glenohumeral joint and 4% in the surrounding soft tissues and capsule. CONCLUSION Based on our cadaveric study, an unassisted anterior injection to the glenohumeral joint could be accurately placed.
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Affiliation(s)
- Cem Zeki Esenyel
- Department of Orthopaedics and Traumatology, Vakif Gureba Training Hospital, Capa, Istanbul, Turkey.
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Demir B, Gursu S, Oke R, Ozturk K, Sahin V. Proximal tibia stress fracture caused by severe arthrosis of the knee with varus deformity. Am J Orthop (Belle Mead NJ) 2009; 38:457-459. [PMID: 19911100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Bilal Demir
- Baltalimani Metin Sabanci Bone and Joint Diseases Education and Research Hospital, Atasehir/Istanbul, Turkey.
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Demir B, Gursu S, Oke R, Konya NM, Ozturk K, Sahin V. Shortening and secondary relengthening for chronically infected tibial pseudarthroses with poor soft tissues. J Orthop Sci 2009; 14:525-34. [PMID: 19802663 DOI: 10.1007/s00776-009-1364-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 04/16/2009] [Indexed: 02/05/2023]
Abstract
BACKGROUND The treatment of chronically infected tibial pseudarthroses with poor soft tissues ends with amputation on many occasions. Aggressive débridement of bone and soft tissue and reconstruction of the extremity, performed as a limb salvage procedure, is an alternative treatment option to amputation. METHODS Our patients had a mean age of 42 years. According to the Paley classification, one of the patients had A2 pseudoarthrosis, four had B2, and three had B3. One had localized infection, whereas the other seven had diffuse infection, according to the Cierny-Mader system. The mean duration of the infection was 10.75 years, and the mean number of previous operations was 5.13. The mean shortness was 2.4 cm, and the mean bone defect was 1 cm. RESULTS The mean primary shortening was 8.6 cm, the mean duration of the fixator stay was 9.6 months, and the mean distraction index was 39.1 days/cm. The mean duration of follow-up was 25 months. The bone results were excellent in four cases, good in two, and fair in the other two. The functional results were excellent in one patient, good in six, and fair in one. A total of 11 minor and 3 major complications were seen during the treatment, and one case resulted in amputation. CONCLUSIONS Despite the high rate of complications, our treatment method enabled limb salvage for patients who had previously been candidates for amputation. With this treatment, there is less need for a second operation, and an additional operation is not necessary for soft tissue coverage.
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Affiliation(s)
- Bilal Demir
- Baltalimani Metin Sabanci Bone and Joint Diseases Education and Research Hospital, Istanbul, Turkey
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Abstract
The purpose of the study was to evaluate the accuracy of injections into the carpal tunnel using three different portals in cadavers, and to define safe guidelines. In this study, 150 wrists of 75 cadavers (54 male, 21 female) were included. To compare three injection sites, 50 wrists of 25 cadavers were used for each technique; we used 23 gauge needles, and acrylic dye. The first injection technique: the needle was inserted 1cm proximal to the wrist crease and directed distally by roughly 45 in an ulnar direction through the flexor carpi radialis tendon. The second injection technique: the needle was inserted into the carpal tunnel from a point just ulnar to the palmaris longus tendon and 1cm proximal to the wrist crease. The third injection technique: the needle was inserted just distal to the distal skin crease of the wrist in line with the fourth ray. The first injection technique gave the highest accuracy rate, and this was also the safest injection site. Median nerve injuries caused by injection was seen mostly with the second technique. Although a steroid injection may provide symptomatic relief in patients with carpal tunnel syndrome, the median nerve and other structures in the carpal tunnel are at risk of injury. Because of that, the injection should be given using the correct technique by physicians skilled in carpal tunnel surgery.
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Affiliation(s)
- Kahraman Ozturk
- Department of Orthopedic Surgery, Vakif Gureba Training and Research Hospital, Istanbul
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Ozkan T, Tuncer S, Ozturk K, Aydin A, Ozkan S. Tibialis posterior tendon transfer for persistent drop foot after peroneal nerve repair. J Reconstr Microsurg 2008; 25:157-64. [PMID: 19037849 DOI: 10.1055/s-0028-1103502] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Despite advances in the surgical treatment of peroneal nerve injuries, a significant fraction of patients do not recover adequately. Among 35 patients who had previous repair of the peroneal nerve, 19 had permanent drop foot, and 16 of these patients underwent tibialis posterior (TP) tendon transfer. Mean duration of paralysis was 26.7 (range, 7 to 192) months. TP tendon was carried to the anterior compartment via the circumtibial route, and then attached to the tibialis anterior, extensor hallucis longus, extensor digitorum communis, and peroneus tertius tendons using tendon-tendon anastomosis. All patients except for one achieved active dorsiflexion to or beyond neutral. Mean preoperative drop foot angle increased from -33.8 degrees to + 9.7 degrees. According to the Stanmore system, the results were excellent in 10 patients (62.5%), good in 4 (25.0%), fair in 1 (6.2%), and poor in 1 (6.2%). The average Stanmore score was 85, which corresponded to an excellent result. We believe that the TP tendon transfer is a straightforward and reliable solution in the treatment of drop foot.
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Affiliation(s)
- Türker Ozkan
- Department of Plastic, Reconstructive and Aesthetic Surgery, Hand Surgery Division, Istanbul University, Istanbul Medical Faculty, Istanbul, Turkey.
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Demir B, Oke R, Ozturk K, Aydin K, Gursu S, Sahin V. Correction of a major flexion deformity developed after knee arthrodesis in child age: a case report. Acta Orthop Belg 2008; 74:424-428. [PMID: 18686475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Septic arthritis in child age results in sequelae when treated late or inappropriately. Arthrodesis is a salvage option which is rarely performed in children because of its complications and resultant disabilities. We report the case of a 16-year-old boy who had been treated with arthrodesis of his right knee at the age of seven and subsequently developed a progressive osseous deformity, eventually resulting in a 130 degrees flexion deformity of the knee. The deformity and the resulting limb length discrepancy were corrected using the Ilizarov method. In a single stage operation, a wedge resection osteotomy at the distal femur was performed and a ring fixator was applied. The mechanical axis was corrected first by gradual closing of the wedge thus avoiding damage to the posterior neurovascular structures, followed by lengthening.
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Affiliation(s)
- Bilal Demir
- Baltalimani Metin Sabanci Bone and Joint Diseases Education and Research Hospital, Istanbul, Turkey.
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Demir B, Ozturk K, Oke R, Gursu S, Aydin KB, Sahin V. A modified technique of internal bone transport. Acta Orthop Belg 2008; 74:216-221. [PMID: 18564479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A modification of the technique of internal bone transport is presented. It decreases bone and soft tissue complications during bone transport, increases patient's comfort, the volume of the fixator is smaller and painful scarring is limited. Nine patients with a mean age of 23.9 years were treated with this technique. The aetiology was tumour, trauma or sequelae of infection. The mean bone loss was 7.2 cm in length. Transportation was achieved with a special pulley system. The mean follow-up time was 18.3 months. The external fixation time ranged from 5 to 13.2 months, the mean distraction index was 12.1 days/cm. The mean length of bone transport done was 6.3 cm. An excellent bone result was obtained in 4 cases, a good result in 4 cases and a fair result in one case. An excellent functional result was obtained in 2 lower extremity cases, a good result in 3 cases. Preoperative DASH scores of the upper extremity cases improved from a mean of 80.1 to a mean of 15.85. Complications were seen in 4 cases.
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Affiliation(s)
- Bilal Demir
- Baltalimani Metin Sabanci, Bone and Joint Diseases Education and Research Hospital, Istanbul, Turkey.
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Abstract
Various flaps have been described for the reconstruction of the soft tissue defects of the digits, but these are not applicable to all kinds of defects. Moreover, these techniques are mostly 2-staged operations that require long-term immobilization. In this study, reverse-flow digital artery cross-finger flap was used to cover various volar and dorsal digital defects in 9 cases. Seven of 9 cases that had follow-up period longer than 2 years were evaluated, and all had good results. We recommend that reverse-flow digital artery cross-finger flap is a universal flap that can be used for almost all types of soft tissue defects of the digits.
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Abstract
AbstractObjective:The aim of the present study was to investigate the dose-related effectiveness of corticosteroids in the management of otitis media with effusion, by using the objective assessment techniques of tympanometry and cytokine measurement.Materials and methods:The eustachian tubes of 42 male rats were obstructed. Thirty-six subjects with effusion were randomly divided into three equal groups: controls; 0.5 mg/kg/day corticosteroid; and 1 mg/kg/day corticosteroid. Concentrations of interleukin-1β and tumour necrosis factor α in the middle-ear effusions were analysed using enzyme-linked immunosorbent assay.Results:An effusion occurred on the 14th post-operative day and was present on the 30th post-operative day in the control group. Otomicroscopic examination and tympanometric measurement showed an improvement in the intervention groups. There was a significant difference between both intervention groups and the control group for both interleukin-1β and tumour necrosis factor α concentrations (p < 0.01). However, there was no significant difference between the 0.5 mg/kg and the 1 mg/kg corticosteroid groups (p > 0.05).Conclusion:The study confirmed a short term beneficial effect of systemic steroids on resolution of otitis media with effusion in a rat model. Our results support the theory that corticosteroids significantly decrease concentrations of both interleukin-1β and tumour necrosis factor α. In our model, the 0.5 mg/kg corticosteroid dose was as effective as the 1 mg/kg corticosteroid dose. Further studies should be carried out to determine the optimal dose and duration of corticosteroids in the treatment of otitis media with effusion.
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Affiliation(s)
- H Yaman
- Department of Otolaryngology, Meram Medical Faculty, Selcuk University, Konya, Turkey.
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Ozturk K, Demir B, Oke R, Durmaz H. Dose-related effects of recombinant human interleukin-10 on hypoxia-induced skeletal muscle injury in immature rats. J Orthop Sci 2006; 11:620-5. [PMID: 17139471 DOI: 10.1007/s00776-006-1063-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Accepted: 06/30/2006] [Indexed: 10/23/2022]
Abstract
BACKGROUND The role of cytokines in the pathogenesis of skeletal muscle injury in patients with hypoxia and inflammation remains unclear. The aim of the present study was to determine the dose-related effects of recombinant human interleukin-10 (rhIL-10) on hypoxia-induced skeletal muscle injury in immature rats. METHODS The study was performed on 1-day-old Sprague-Dawley rat pups that were randomized to one of five groups: nonhypoxic controls (group 1; n=8); rats subjected to hypoxia-reoxygenation (H/O) and returned to their mothers (group 2; n=11); rats subjected to H/O, returned to their mothers, and treated with rhIL-10 (10 microg/kg per day s.c.) for 3 days (group 3; n=10); rats subjected to H/O, returned to their mothers, and treated with rhIL-10 (25 microg/kg per day s.c.) for 3 days (group 4; n=10); or rats subjected to H/O, returned to their mothers, and treated with rhIL-10 (75 microg/kg per day s.c.) for 3 days (group 5; n=10). All animals were killed on day 4, and skeletal muscle specimens were obtained to determine the tissue levels of malondialdehyde (MDA) and superoxide dismutase (SOD) and to check for any histological changes. RESULTS The polymorphonuclear leukocyte count, amount of interstitial edema, microvessel size, and area of myocyte necrosis was greater in groups 2, 3, 4, and 5 than in group 1, although the findings were significantly less prominent in groups 4 and 5 than in groups 2 and 3. MDA levels significantly increased in groups 2 and 3 compared to those in groups 1, 4, and 5. SOD values decreased significantly in groups 2 and 3 compared to those in groups 1, 4, and 5. CONCLUSIONS Administration of rhIL-10 reduced skeletal muscle injury produced by hypoxia in immature rats. Intermediate and high doses of rhIL-10 were associated with a significant reduction of skeletal muscle damage, whereas a low dose was not.
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Affiliation(s)
- Kahraman Ozturk
- Department of Orthopaedics and Traumatology, Baltalimani Metin Sabanci Training and Research Hospital for Bone Diseases, Istanbul University Faculty of Medicine, Turkey
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Ozkan T, Aydin A, Ozer K, Ozturk K, Durmaz H, Ozkan S. A surgical technique for pediatric forearm pronation: brachioradialis rerouting with interosseous membrane release. J Hand Surg Am 2004; 29:22-7. [PMID: 14751098 DOI: 10.1016/j.jhsa.2003.10.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PURPOSE In this study we used a tendon transfer technique (consisting of rerouting of the brachioradialis with interosseous membrane release) to restore active forearm pronation in patients with supination deformity secondary to brachial plexus birth palsy. METHODS Four children (3 with flexible supination deformities, 1 with a fixed supination deformity) whose ages ranged between 5 and 9 years had brachioradialis rerouting with interosseous membrane release. RESULTS Mean active forearm rotation was improved from 28 degrees supination before surgery to 49 degrees pronation after surgery. No patient developed elbow contracture during a minimum of 12 months of follow-up evaluation (40 months in 2 patients, 14 months in 1 patient, 12 months in 1 patient). CONCLUSIONS These results suggest that brachioradialis rerouting combined with interosseous membrane release may be a successful means to correct supination deformity of the forearm.
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Affiliation(s)
- Turker Ozkan
- Istanbul University Faculty of Medicine, Department of Plastic and Reconstructive Surgery, Hand Surgery Division, D:5, Nisantasi, Istanbul, Turkey
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