Publications by authors named "Kadir I Yildiz"

Purpose: In this study, our aim was to reveal the effect of the medial femoral offset aimer usage through the femoral tunnel entry and exit points and the tunnel length during femoral tunnel drilling in arthroscopic anterior cruciate ligament (ACL) reconstruction.

Methods: One hundred patients who underwent arthroscopic single-bundle ACL reconstruction were included in the study. Group 1 consisted of 50 patients who underwent femoral tunnel drilling using a medial portal offset aimer device, while Group 2 consisted of 50 patients who were operated on using the freehand technique.

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Background: This study aims to reveal surgical treatment's effect on plantar load restoration and clinical outcomes compared to conservative treatment in intra-articular calcaneal fractures.

Methods: Thirty-two patients (Group 1) who underwent surgery for unilateral intra-articular calcaneal fractures and 28 patients who received conservative treatment (Group 2) were included in the study. Detailed static pedobarography examinations were performed on all patients.

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Background: In this study, our aim was to determine the effect of cosmetic improvement on patient satisfaction and functional scores in hallux valgus (HV) surgery.

Methods: Preoperative foot photographs of 105 patients who had undergone chevron osteotomy for HV between 2016 and 2018 were taken. The patients were divided into 2 groups.

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Background: No detailed comparative studies have been performed regarding plantar pressure changes between proximal dome and distal chevron osteotomies. This study aimed to compare radiographic and plantar pressure changes after distal chevron and proximal dome osteotomies and to investigate the effect of radiographic and plantar pressure changes on clinical outcomes.

Methods: This study included 26 and 22 patients who underwent distal chevron and proximal dome osteotomies, respectively.

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Purpose: To evaluate the effect of several shoulder anatomical parameters in the development of rotator cuff tear (RCT).

Methods: Between 2014 and 2018, all consecutive patients who underwent arthroscopic rotator cuff repair due to full-thickness rotator cuff tear with a minimum 2-year follow-up were identified. Inclusion criteria were (1) age>18 years, (2) patients with degenerative RCT, (3) full-thickness RCTs, (4) patients underwent arthroscopic RCR due to unresponsive conservative treatment, (5) minimum 2-year follow-up period.

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Objective: This study aimed to determine the reliability levels of the radiographic union scale for tibial fractures (RUST) and the modified version of the system, mRUST, for femoral shaft fractures in pediatric and adult patients and to evaluate the value of the scores for total and each cortex in the decision making on fracture union.

Methods: A total of 15 orthopedic surgeons scored the radiographs of 24 pediatric and 24 adult patients with femoral shaft fractures that were obtained at 0, 4, 8, 12, and 16 postoperative weeks treated with elastic stable intramedullary nail in pediatric patients and locked intramedullary nail in adult patients using the RUST and mRUST scores. Intra-class correlation coefficient (ICC) was used in the evaluation of reliability of the RUST and mRUST scores.

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Background: The study aimed to evaluate the agreement between the radiographic union scale (RUST) and modified RUST (mRUST) in humeral shaft fractures treated with different techniques, and the effect of surgeons' experience and thresholds for determining bone union.

Materials And Methods: A total of 20 orthopedic surgeons reviewed and scored radiographs of 30 patients with humeral shaft fractures treated by external fixation, intramedullary nailing, and plating using the RUST and mRUST on the 0 day, 6 weeks, 12 weeks and 24 weeks follow-up radiographs. Bone healing, interrater agreement between RUST and mRUST scores, and the threshold for radiographic union were evaluated.

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Purpose: To compare the critical shoulder angle (CSA), acromion index (AI), acromion angulation (AA) and glenoid version angle (GVA) between patients with full-thickness rotator cuff tears (RCTs) and patients with intact rotator cuffs.

Methods: Between 2014 and 2018, the CSA, AI, AA and GVA were measured in consecutively included patients aged > 40 years who underwent shoulder arthroscopy for full-thickness RCTs. A total of 437 patients with RCTs and a mean age of 51.

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Background: To compare selected morphological parameters between normal and osteoarthritic (OA) knees, as well as to evaluate differences in these parameters between Kellgren-Lawrence (K-L) grades of OA.

Methods: Knee joint morphology was evaluated using magnetic resonance (MR) images of 200 participants with knee OA (50 each of K-L grades 1-4) and 50 without knee OA, matched for age, body mass index, sex, and tibiofemoral angle. Knees with a coronal alignment within five degrees of neutral and no apparent bone loss on radiographs were included.

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Objective: There are limited data on bone dimension and cartilage thickness of the distal humeral articular surface. This study aimed to evaluate sex- and age-related bone dimension and cartilage thickness differences and assess the effect of cartilage thickness on distal humeral shape.

Design: Elbow magnetic resonance images of 180 healthy participants were evaluated.

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Few studies have evaluated the long-term functional and radiological outcomes of tarsal coalition resections. This study aimed to report and compare the functional and radiological outcomes after talocalcaneal (TC) and calcaneonavicular (CN) coalition resections. Thirty-three patients between 12 and 35 years old with symptomatic tarsal coalitions participated, each undergoing tarsal coalition resections (24 TC and 9 CN).

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Dissatisfaction is still an important problem in a small but important group of patients who undergo total knee arthroplasty. This study was designed to evaluate the effectiveness of showing patients the change in their standing posture, before and after total knee replacement, using standing photographs (anterior, posterior, and lateral view), on improving self-reported quality of life and satisfaction. Full-length lower extremity radiographs and standing photographs were obtained prior to total knee replacement and 6 months after surgery in the study group.

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Purpose: To compare the biomechanical and histological properties of Achilles tendons repaired at different time points during the acute injury period.

Methods: Thirty-six skeletally mature Sprague-Dawley rats underwent bilateral mid-substance Achilles tenotomy. The Achilles tendons were repaired either in the first 24 h (group 1), 24-48 h (group 2), 48-72 h (group 3), or > 72 h (mean: 120 ± 5.

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Purpose: To evaluate the knee morphologic parameters in the Turkish population, compare them with known data, and identify new morphologic parameters.

Methods: Magnetic resonance (MR) images of 1000 healthy subjects aged 18-50 years were included. One orthopedic surgeon and one experienced musculoskeletal radiologist reviewed MR images and measured 22 morphologic parameters.

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Purpose: This study aimed to compare differences in lumbosacral and spinopelvic parameters between pain developers and non-pain developers as well as the effects of various posture changes.

Methods: A total of 38 consecutive participants, 20 standing-induced low back pain developers (mean age: 27.7 ± 5.

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Background: Standard radiographs are limited in the evaluation of fracture characteristics and preoperative planning of OTA/AO 43C3 fractures. Therefore, CT imaging is an accepted as a useful method. CT is however expensive and has high radiation, and traction radiographs could be an alternative.

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Purpose: The purpose of this study was to evaluate the role of surgeons' experience with meniscal repairs and meniscectomy decisions, and to determine the factors affecting the disagreement between meniscal repairs and meniscectomy decisions.

Methods: In total, 223 patients with meniscal tears, 106 meniscal repairs, and 117 meniscectomies were included. Six orthopedic surgeons (3: > 5 years; 3: < 5 years' arthroscopy experience) were blinded, and they independently reviewed all preoperative MR images for over a month.

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Purpose: Primary bone tumors of the fibula are rare. There are only a few studies reporting the incidence, histologic, and anatomic distribution of primary fibula tumors. This study aimed to comprehensively report the incidence, presenting symptoms, and histologic tumor types with the anatomic and histologic distribution of primary bone tumors of the fibula.

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Plantar heel pain is a common disabling condition in adults. Biomechanical factors are important in the development of plantar heel pain. Quantitative changes in rearfoot alignment in patients with plantar heel pain have not been previously investigated.

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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.

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Background: To investigate changes in lower extremity coronal alignment in patients with unilateral Crowe type IV developmental dysplasia of the hip who underwent total hip arthroplasty with transverse femoral shortening osteotomy.

Methods: We reviewed the preoperative and 1-year postoperative full-length lower extremity radiographs of 25 patients. Femoral offset (FO), mechanical hip-knee-ankle angle, anatomical axis, mechanical axis deviation (MAD), mechanical lateral proximal femoral angle, anatomical medial proximal femoral angle, mechanical lateral distal femoral angle, anatomical lateral distal femoral angle, knee joint line congruency angle, mechanical medial proximal tibial angle, mechanical lateral distal tibial angle, ankle joint line orientation angle, tibial plafond talus angle, extremity length, and pelvic obliquity were measured on both the operative and nonoperative sides.

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Background: No previous description has been made about an objective method to test the graft resistance in MPFL reconstruction intraoperatively. In our study, we aimed to obtain intraoperative objective data about the graft resistance using contact pressure-sensitive surfaces and measuring pressure formed under the graft.

Materials And Methods: In 2012, double-layered contact pressure-sensitive Fuji Prescale Film bands were placed under MPFL in 15 fresh-frozen high above-knee amputates (Group 1) and under graft in 10 patients who underwent MPFL reconstruction (Group 2).

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Introduction: Chronic non-specific synovitis has a higher recurrence rate with arthroscopic synovectomy due to the insufficient removal of all pathological tissues. Neither has radiosynoviorthesis been sufficiently effective in treatment in contrast to cases of chronic specific synovitis such as rheumatoid arthritis. This study aimed to investigate the efficiency of combined arthroscopic and radionuclide synovectomy in chronic non-specific synovitis of the knee with the evaluation of clinical and radiological results.

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