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Featured researches published by Merter Yalcinkaya.


Orthopedics | 2013

Resection Arthroplasty for Mason Type III Radial Head Fractures Yield Good Clinical but Poor Radiological Results in the Long Term

Merter Yalcinkaya; A. Erdem Bagatur; Sinan Erdogan; Gazi Zorer

Long-term clinical and radiographic outcomes of primary resection for Mason type III radial head fractures were evaluated in 13 patients (14 elbows) with a mean age of 38.8 years (range, 20-67 years) at the time of surgery. All patients had isolated radial head fractures without associated injuries. Mean follow-up was 14.7 years (range, 9-26 years). Proximal migration of the radius and the carrying angle were measured, and radiographs were reviewed for degenerative elbow and wrist arthritis and periarticular ossification. Five results were excellent and 9 were good. In 8 cases, the radii had migrated proximally and the carrying angle had increased an average 6.3°; the increases in both ulnar variance and the carrying angle were significant, and a significant negative correlation was found between the carrying angles and the clinical scores. Degenerative changes occurred in 8 elbows and 4 wrists, and periarticular heterotopic ossification was present in 3 elbows. Despite the satisfactory long-term outcomes, radial head resection resulted in proximal migration of the radius and an increase in the carrying angle; in addition, osteoarthritic changes in both elbows and wrists as well as periarticular heterotopic ossification were frequent findings without pronounced functional impairment.


Acta Orthopaedica et Traumatologica Turcica | 2013

Fate of abstracts presented at a National Turkish Orthopedics and Traumatology Congress: publication rates and consistency of abstracts compared with their subsequent full-text publications

Merter Yalcinkaya; A. Erdem Bagatur

OBJECTIVE The aim of this study was to evaluate the publication rates of full-text articles after presentation of abstracts at a Turkish National Orthopaedics and Traumatology Congress, determine the time lag from the congress date to publication of full-text articles and assess the consistency between abstracts and the subsequent publications. METHODS All abstracts from the scientific program of the 20th Turkish National Orthopaedics and Traumatology Congress (2007) were identified and computerized PubMed searches were conducted to determine whether an abstract had been followed by publication of a full-text article and key features were compared to evaluate their consistency. The time lag to publication and the impact factors of the journals where the articles were published were noted. RESULTS Of the 770 abstracts (264 oral, 506 poster presentations), 227 (29.5%) were followed by a full-text and 116 (44%) of the 264 oral and 111 (22%) of the 506 poster presentations were published. The mean time to publication was 14.9±16.075 (range: 33 to 55) months. Thirty-three (14.5%) were published prior to the presentation at the congress. The likelihood of publication decreased after the third year (26 of 227, 11.5%). A total of 182 (80.2%) articles showed inconsistencies with the abstract; 74 (32.6%) minor, 14 (6.2%) major, and 94 (41.4%) minor and major inconsistencies. The mean impact factor of the journals was 1.152±0.858. CONCLUSION The vast majority of abstracts presented at this congress were not followed by publication of a full-text article. Additionally, frequent inconsistencies between the final published article and the original abstract indicated the inadequacy of quality of reporting in abstracts.


Acta Orthopaedica et Traumatologica Turcica | 2009

The relationship between anterior knee pain occurring after tibial intramedullary nailing and the localization of the nail in the proximal tibia

Onat Üzümcügil; Ahmet Dogan; Merter Yalcinkaya; Yavuz Kabukcuoglu

OBJECTIVES We investigated the relationship between the development of postoperative anterior knee pain and the location of the nail in the proximal tibia in patients treated with locked intramedullary nailing for tibial diaphyseal fractures. METHODS Thirty patients were selected among those who underwent locked intramedullary nailing for tibial diaphyseal fractures, with exclusion of all other factors that might be associated with postoperative anterior knee pain. In all the patients, intramedullary nailing was performed using the transtendinous approach and both proximal and distal locking. The patients were evaluated in two groups: 10 patients (3 women, 7 men; mean age 38 + or - 14 years) had anterior knee pain, whereas 20 patients (5 women, 15 men; mean age 35 + or - 12 years) did not. The distances from the nail to the tibial plateau and anterior tibial cortex were measured on the lateral x-rays after a mean follow-up of 56.6 months and 45.2 months in patients with and without anterior knee pain, respectively. RESULTS The two groups were similar with respect to gender and follow-up period (p>0.05). The mean distances from the nail to the tibial plateau and anterior tibial cortex were -11.5 + or - 7.9 mm and 3.7 + or - 5.4 mm, respectively, in patients with anterior knee pain. The corresponding distances were -8.8 + or - 7.3 mm and 6.5 + or - 4.7 mm in patients without knee pain. Neither of the distances showed a significant difference between the two groups (p>0.05). CONCLUSION Our findings suggest that the distances from the nail to the tibial plateau and anterior tibial cortex do not have any role in the development of postoperative anterior knee pain.


Acta Orthopaedica et Traumatologica Turcica | 2010

Clinical results of intramedullary nailing following closed or mini open reduction in pediatric unstable diaphyseal forearm fractures

Merter Yalcinkaya; Ahmet Dogan; Ufuk Ozkaya; Sami Sokucu; Onat Üzümcügil; Yavuz Kabukcuoglu

OBJECTIVES We compared the clinical results of open reduction with a mini incision and closed reduction in pediatric unstable diaphyseal forearm fractures treated with intramedullary nailing. METHODS We retrospectively evaluated 45 children who were treated with intramedullary nailing for unstable middle third diaphyseal forearm fractures. Before intramedullary nailing, 24 patients (group 1; 5 girls, 19 boys; mean age 10 years; range 5 to 14 years) underwent open reduction with a mini incision, and 21 patients (group 2; 5 girls, 16 boys; mean age 11.5 years; range 8 to 13 years) underwent closed reduction. There were 16 closed, seven Gustilo-Anderson type 1, and one type 2 open fractures in group 1, and 15 closed and six type 1 open fractures in group 2. The mean time to surgery was 5 days (range 1 to 20 days) in group 1, and 3.1 days (range 1 to 5 days) in group 2. Rush rods or Kirschner wires were used for fixation. In group 1, both radius and ulna were fixed in all the patients, whereas fixation involved both bones in 18 patients, and only ulna in three patients in group 2. Functional results were evaluated according to the criteria of Price et al. The mean follow-up period was 33 months (range 12 to 89 months) in group 1, and 37 months (range 14 to 52 months) in group 2. RESULTS Union was obtained in a mean of 7.1+/-1.0 weeks (range 6 to 9 weeks) in group 1, and 6.5+/-1.0 weeks (range 6 to 10 weeks) in group 2. The implants were removed after a mean of 7.2+/-1.7 weeks (range 6 to 10 weeks) in group 1, and 8.1+/-0.4 weeks (range 8 to 10 weeks) in group 2. The two groups differed significantly with respect to union and implant removal times (p=0.036 and p=0.002, respectively). According to the criteria of Price et al., the results were excellent in 19 patients (79.2%) and 18 patients (85.7%), and good in five patients (20.8%) and three patients (14.3%) in group 1 and 2, respectively. There was no significant difference between the functional results of the two groups (p>0.05). Complications showed a similar profile in the two groups, being one major (4.2%) and seven minor (29.2%) in group 1, one major (4.8%) and eight minor (38.1%) in group 2. None of the patients had complications such as limb-length discrepancy, epiphyseal damage, angular or rotational deformity, synostosis, or limited elbow or forearm range of motion. CONCLUSION Closed reduction or open reduction with a mini incision before intramedullary nailing yield similar functional results, with a similar complication profile in the treatment of pediatric unstable diaphyseal forearm fractures.


Journal of Spinal Disorders & Techniques | 2012

Evaluation of shoulder balance through growing rod intervention for early-onset scoliosis.

Onat Üzümcügil; Yunus Atici; Yusuf Ozturkmen; Merter Yalcinkaya; Mustafa Caniklioglu

Study Design: Retrospective clinical study. Objective: To compare the single and dual growing rod techniques with an emphasis on shoulder balance in the surgical treatment of early-onset scoliosis. Summary of Background Data: In the literature, there exist not much data about shoulder balance through growing rod intervention using either single or dual rods for progressive scoliosis in patients of young age. Methods: A total of 20 patients with early-onset scoliosis who were treated surgically using growing rod techniques (11 patients: single rod group, 9 patients: dual rod group) were analyzed radiographically. Radiographical measures of shoulder balance (difference of coracoid process height, clavicula-tilt angle, and clavicula-rib cage intersection point) and scoliosis of both groups that were obtained in the preoperative, postoperative, and final follow-up period underwent statistical analysis in comparison with each other. Results: Both single and dual growing rod techniques improved the deformity correction, maintained the correction and allowed spinal growth in the surgical treatment of early-onset scoliosis. Single rod technique had a higher incidence of rod breakage. Both techniques effected the shoulder levels similarly. Conclusions: When evaluated separately, single rod technique does improve shoulder balance significantly. For a more definitive evaluation, a comparison study having more patients in both groups is essential.


Orthopedics | 2009

A rare wrist injury: simultaneous fractures of the hamate body and scaphoid waist.

Merter Yalcinkaya; Nikola Azar; Ahmet Dogan

Hamate fractures, which are classified as fractures of the body or the hook, are rare, representing only 2% to 4% of carpal fractures. Hamate body fractures can occur as isolated injuries, but in a high-energy trauma, associated carpal bone fractures or carpal disruption can be seen. Hamate fractures can be easily underdiagnosed. Pain in the ulnar side of the palm and swelling of the wrist after a wrist injury should alert the physician. Anteroposterior and lateral radiographs of the wrist may not always be adequate for the diagnosis. Computed tomography should be used to explain the pain in the wrist and to investigate any associating osseous pathologies. This article describes a case of a rare wrist injury: a fracture of the hamate body and a simultaneous fracture of the scaphoid waist treated nonoperatively. To our knowledge, there is only 1 case report in the literature in which the fracture of the hamate body accompanies the fracture of the distal pole of the scaphoid.


Orthopedics | 2016

A Simple Method for Fixation of Proximal Opening-Wedge Osteotomy of the First Metatarsal for Correction of Hallux Valgus

Bagatur Ae; Albayrak M; Akman Ye; Merter Yalcinkaya; Utku Erdem Ozer; Yalcin Mb

A simple, inexpensive technique for fixation of proximal opening-wedge osteotomy of the first metatarsal for correction of moderate or severe hallux valgus (HV) is described. After the opening-wedge osteotomy and bone grafting of the first metatarsal have been performed, 2 Kirschner wires are introduced for internal fixation and removed 8 weeks postoperatively. Twenty-three patients with symptomatic HV who had a proximal medial opening-wedge osteotomy of the first metatarsal in combination with a distal soft tissue procedure and bunionectomy were evaluated retrospectively. All osteotomies healed without complications and satisfaction was achieved in 22 patients. Hallux varus developed in 1 patient. Preoperatively, mean HV angle (HVA) was 41° (range, 35°-61°) and mean 1-2 intermetatarsal angle (IMA) was 19° (range, 16°-24°). Postoperatively, mean HVA was 14° (range, 10°-17°) and mean 1-2 IMA was 7° (range, 5°-9°). The mean decrease in the HVA was 27° (P<.001) and the mean decrease in the 1-2 IMA was 12° (P<.001). [Orthopedics. 2016; 39(6):e1213-e1217.].


Journal of Foot & Ankle Surgery | 2014

Neurolysis for failed tarsal tunnel surgery.

Merter Yalcinkaya; Utku Erdem Ozer; M. Burak Yalcin; A. Erdem Bagatur

The purpose of the present study was to investigate the causes of failure after tarsal tunnel release and the operative findings in the secondary interventions and the outcomes. The data from 8 patients who had undergone revision surgery for failed tarsal tunnel release at least 12 months earlier were evaluated retrospectively. Only the patients with idiopathic tarsal tunnel syndrome were included, and all had unilateral symptoms. Neurophysiologic tests confirmed the clinical diagnosis of failed tarsal tunnel release in all patients. Magnetic resonance imaging revealed varicose veins within the tarsal tunnel in 1 patient (12.5%) and tenosynovitis in another (12.5%). Open tarsal tunnel release was performed in all patients, and the tibialis posterior nerve, medial and lateral plantar nerves (including the first branch of the lateral plantar nerve), and medial calcaneal nerve were released in their respective tunnels, and the septum between the tunnels was resected. The outcomes were assessed according to subjective patient satisfaction as excellent, good, fair, or poor. During revision surgery, insufficient release of the tarsal tunnel, especially distally, was observed in all the patients, and fibrosis of the tibialis posterior nerve was present in 1 (12.5%). The outcomes according to subjective patient satisfaction were excellent in 5 (62.5%), good in 2 (25%), and fair in 1 (12.5%). The fair outcome was obtained in the patient with fibrosis of the nerve. Insufficient release of the tarsal tunnel was the main cause of failed tarsal tunnel release. Releasing the 4 distinct tunnels and permitting immediate mobilization provided satisfactory results in patients with failed tarsal tunnel release.


Case reports in orthopedics | 2014

Unilateral carpal tunnel syndrome caused by an occult ganglion in the carpal tunnel: a report of two cases.

Merter Yalcinkaya; Yunus Emre Akman; A. Erdem Bagatur

Carpal tunnel syndrome (CTS) usually presents bilaterally and a secondary nature should be suspected in patients with unilateral symptoms, especially those with a long-standing history, and when the symptomatic hand shows severe neurophysiologic impairment, while the contralateral hand is neurophysiologically intact. Space-occupying lesions are known to cause CTS and the incidence of space-occupying lesions in unilateral CTS is higher than that of bilateral CTS. It is easy to detect a mass when it is palpable; however, occult lesions are usually overlooked. Whenever a patient presents with unilateral symptoms and unilateral neurophysiologic impairment, the possibility of a space-occupying lesion compressing the median nerve should be kept in mind in the differential diagnosis. This study presents two cases with an occult ganglion in the carpal tunnel compressing the median nerve and causing unilateral symptoms of CTS. We stress on the importance of imaging studies in patients with unilateral symptoms that are usually not used in CTS. The reported patients were evaluated and magnetic resonance images revealed an intratunnel space-occupying lesion.


Orthopedics | 2016

Surface Aneurysmal Bone Cyst: Clinical and Imaging Features in 10 New Cases

Merter Yalcinkaya; Osman Lapcin; Yavuz Arikan; Osman Emre Aycan; Devrim Özer; Yavuz Kabukcuoglu

Aneurysmal bone cyst originating from the surface of the bone, either within the cortex or subperiosteally, is an uncommon anatomic subtype. This article reports the clinical and radiologic evaluations and treatment outcomes of 10 patients with surface aneurysmal bone cysts that were surgically treated between 1982 and 2014. Mean age at the time of surgery was 22.4 years (range, 11-44 years). According to Capannas radiographic evaluation criteria, 6 of the lesions were classified as type V and 4 were classified as type IV. Radiographically, periosteal shell formation was observed to be complete in 4 patients, partial in 3, and absent in 3, and 6 patients had Codmans angle or buttress formation. In 1 patient, computed tomography scan showed birdcage-like ossification attached to the surface of bone. Magnetic resonance imaging showed fluid-fluid levels in 5 patients. All of the patients had standard curettage and high-speed burr application as an adjuvant. No patient had local recurrence at the end of the follow-up period of 98.4 months (range, 13-288 months). These findings show the importance of careful radiologic evaluation and biopsy to better plan a treatment strategy when surface aneurysmal bone cyst is included in the differential diagnosis. The finding of fluid-fluid levels on magnetic resonance imaging or computed tomography is not pathognomonic for primary aneurysmal bone cyst; however, the absence of this finding does not rule out the diagnosis. The rate of local recurrence after curettage plus high-speed burr is reasonably low, and other adjuvant procedures should be used whenever needed. [Orthopedics. 2016; 39(5):e897-e903.].

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