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Kempinska M.,Medical University of Gdansk | Lass P.,Medical University of Gdansk | Cwika J.B.,Central Clinical Hospital | Zbikowski P.,Orthopedics and Traumatology Clinic
Journal of Physics: Conference Series | Year: 2011

Radioisotope knee synovectomy is based on an Yttrium - 90 citrate injection (185 - 222 MBq) into the knee joint cavity. The performance of procedure needs participation of a nuclear medicine specialist as well as an orthopedist or a rheumatologist and a technologist, who prepares radiopharmaceuticals. The ionization doses for patients and personnel depend not only on the injected activity, but also on the method and process of injection and the radioactivity measurement procedure used. The aim of this study is the evaluation of the degree of radiation exposure of patients and medical personnel during the performance of therapy with 90Y. © Published under licence by IOP Publishing Ltd. Source

Dursun M.,Adana Numune Training and Research Hospital | Kalkan T.,Adana Numune Training and Research Hospital | Aytekin M.N.,Yildirim Beyazit University | Celik I.,Orthopedics and Traumatology Clinic | Ugurlu M.,Yildirim Beyazit University
European Journal of Orthopaedic Surgery and Traumatology | Year: 2014

Aim: The aim of this study is to show whether a new magnetic-guided locking technique is superior to a standard freehand technique in terms of operation time and radiation exposure. This treatment will be used for distal locking of the tibia during intramedullary nailing. Methods: This randomized trial is done through 80 patients having tibial fractures with a mean age of 25 years (range 16-67 years). In the magnetic locking group, there were 20 fractures of the distal third, 16 of the shaft, and 4 of the proximal tibia; in the freehand group, these numbers were 15, 20, and 5, respectively. The parameters like operation time, distal locking time, radiation exposure duration, and dose were compared. Results: We placed 100 distal locking screws in the magnetic locking group and 95 in the freehand group. Fluoroscopy was necessary only in the freehand group. All screws were correctly positioned the first time in both groups. The magnetic locking group had a shorter mean surgical time (52 ± 6.2 vs 70 ± 10.9 min; P < 0.01), a shorter mean distal locking time (5 ± 1.1 vs 16 ± 2.0 min; P < 0.01), and a shorter mean placement time for each screw (2 ± 0.5 vs 7 ± 1.2 min; P < 0.01). The magnetic locking group had lower mean radiation exposures (8 ± 4.5 vs 40 ± 7.6 s; P < 0.01) and mean radiation exposure (5.4 ± 2.5 vs 25 ± 6.8 mGy range; P < 0.01). Conclusions: For distal locking during tibial intramedullary nailing, the magnetic locking system is as accurate as the standard freehand technique, but it has lower operative times and radiation exposures compared to the standard freehand technique. Therefore, the magnetic locking system should be preferred to current standard freehand techniques. © 2013 Springer-Verlag. Source

Aytekin M.N.,Yildirim Beyazit University | Kucukdurmaz F.,Bezmialem Foundation University | Celik I.,Orthopedics and Traumatology Clinic | Esmer A.F.,Ankara University | Akpinar F.,Abant Izzet Baysal University
Turkish Journal of Medical Sciences | Year: 2013

Aim: Although many anatomic, morphologic, and radiologic studies have been carried out for the femur, as for all other bones of the skeletal system, we could not find any morphometric studies useful for orthopedic surgeons who want to understand the effects of dynamic condylar screw-plates (DCS-Plates) on the distal femur. The aim of this study was to determine the amount of cortex loss in the distal femur when inserting a DCS-Plate. Materials and methods: The lateral cortex width of 125 adult, dry, and grossly intact right and left cadaver femora was measured for the region of the femur in which the DCS-Plate was applied, and the results were analyzed statistically. Results: The mean value of the lateral cortex width (DLCW = α) of the femora was 33.5 mm (range: 44.67-24.49 mm). While inserting the DCS-Plate, 38.04% (range: 30.43%-46.09%) of the mean width of the lateral cortex was lost. Conclusion: We demonstrated the amount of lateral cortex loss in the femur while inserting a DCS-Plate. If the DCS-Plate is inserted more proximally to its original entry point, the risk of fracture at the supracondylar region increases due to the defect at the lateral cortex. © TÜBİTAK. Source

Turgut G.,Sisli Etfal Research Hospital | Kayali M.U.,Sisli Etfal Research Hospital | Kose O.,Orthopedics and Traumatology Clinic | Bas L.,Sisli Etfal Research Hospital
Strategies in Trauma and Limb Reconstruction | Year: 2010

Composite tissue loss in extremities involving neurovascular structures has been a major challenge for reconstructive surgeons. Reconstruction of large defects can only be achieved with microsurgical procedures. The success of free flap operations depends on the presence of healthy recipient vessels. In cases with no suitable donor artery and vein or in which even the use of vein grafts would not be feasible, the lower limb can be salvaged with a cross-leg free flap procedure. We present a case with a large composite tissue loss that was reconstructed with cross-leg free transfer of a combined latissimus dorsi and serratus anterior muscle flap. This case indicates that this large muscle flap can survive with the cross-leg free flap method and this technique may be a viable alternative for large lower extremity defects that have no reliable recipient artery. © 2010 The Author(s). Source

Suluova F.,Orthopedics and Traumatology Clinic | Kanatli U.,Gazi University | Ozturk B.Y.,Orthopedics and Traumatology Clinic | Esen E.,Gazi University | Bolukbasi S.,Gazi University
European Journal of Orthopaedic Surgery and Traumatology | Year: 2014

The objective of this study was to retrospectively evaluate the prevalence of the cystic changes at rotator cuff footprint on proximal humeral tuberosities and investigate their relationship with rotator cuff tears and patient age. Magnetic resonance (MR) images of 657 patients who underwent shoulder arthroscopy for treatment of rotator cuff disorders were reviewed to localize the cystic changes at anterior (supraspinatus insertion) and posterior (infraspinatus insertion) aspects of greater tuberosity (GT) and lesser tuberosity (subscapularis insertion). Preoperative MR reports as well as cyst size and locations on MR images were correlated with arthroscopic records of rotator cuff pathology (tear type, size, location and tendon involvement) and patient age. The prevalence of cystic changes was 9.1 % (60 patients) in the study population. Anterior GT cysts were found in 56 % of patients and were strongly associated with full-thickness (p < .001) and articular-sided partial-thickness rotator cuff tears (p = .02). Posterior GT and lesser tuberosity cysts were found in 27 and 17 % of patients, respectively, and were not significantly related to rotator cuff tears, although there was an increased trend of posterior cysts in patients with infraspinatus tears (p = .09). A significant relation was found between patient age and the cyst size (p = .01), while none of the cyst localizations were statistically related to age. Anterior GT cysts were more common in this patient group and demonstrated a strong association with rotator cuff disorders regardless of age. Posterior GT and lesser tuberosity cysts were less common and showed no association with rotator cuff pathology or patient age. © 2013 Springer-Verlag. Source

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