Browsing by Author "Akpinar, F"

Now showing 1 - 11 of 11

Anatomical Characteristics of the Tibial Medullary Canal and Their Implications for Intramedullary Fixation
(Sage Publications Ltd, 2003) Tosun, N; Aydinlioglu, A; Akpinar, F; Dogan, A; Islam, C
The use of intramedullary fixation methods in the tibia is limited by the anatomical characteristics of this bone. In this study, the shape and degree of axial lateral rotation of the medullary canal were determined in 45 human dry cadaver bones using X-ray and computed tomography examinations and direct measurement of rotation in inserted nails. Forty bones (88.8%) had slight and five bones (11.1%) had excessive anterior bowing along the tibial shaft. Six of the 45 bones (13.3%) had an extremely narrow medullary canal. Axial lateral rotation was demonstrated in the middle third of the medullary canal, being on average (+/- SD) 32.35 +/- 16.25degrees (range 10 - 75degrees). This study revealed that extreme narrowing of the medullary canal, axial lateral rotation of the medullary canal, and extreme anterior bowing of the tibial shaft are the anatomical characteristics most likely to cause difficulties when using intermedullary fixation in the tibia.
Bilateral Median Nerve Compression at the Level of Struthers' Ligament - Case Report
(Amer Assoc Neurological Surgeons, 2000) Aydinlioglu, A; Cirak, B; Akpinar, F; Tosun, N; Dogan, A
Struthers' ligament syndrome is a rare cause of median nerve entrapment. Bilateral compression of the median nerve is even more rare. It presents with pain, sensory disturbance, and/or motor function loss at the median nerve's dermatomal area. The authors present the case of a 21-year-old woman with bilateral median nerve compression caused by Struthers' ligament. She underwent surgical decompression of the nerve on both sides. To the authors' knowledge, this case is the first reported bilateral compression of thp median nerve caused by Struthers' ligament. The presentation and symptomatology of Struthers' ligament syndrome must be differentiated from median nerve compression arising from other causes.
Effects of Glutaraldehyde on Synovial Tissue
(Cambridge Med Publ, 2003) Tosun, N; Akpinar, F; Dogan, A
This study investigated the effect of glutaraldehyde on the synovial tissue of rabbits. Four different concentrations of glutaraldehyde solution were injected into one knee and the contralateral glenohumeral joint of rabbits in group A to group D. The concentration levels used in group A and group B were 1000 ppm and 100 ppm, respectively. For group C and group D, samples of rinsing solutions obtained by rinsing arthroscopic equipment with 1 1 or 2 1 of isotonic saline, respectively, after immersion in 2% glutaraldehyde were used. The contralateral knee and ipsilateral glenohumeral joint of the same rabbits were injected with saline and used as control sites. Rabbits were sacrificed after 1 day, 7 days or 15 days and the histopathological changes in the synovial tissues were compared. The most dramatic inflammatory changes were observed in group A and group B. The histopathological changes were-greater after 7 days than after 1 day or 15 days. Group C and group D showed no significant differences when compared with normal synovium. A correlation between the concentration of the glutaraldehyde solution and the number of inflamed joints was observed. Very few or no inflamed joints were seen when samples from rinsing solutions of 11 or 2 1 of saline, respectively, were used.
Entrapment of the Sensory Branch of the Radial Nerve (wartenberg's Syndrome): an Unusual Cause
(Tohoku Univ Medical Press, 2001) Tosun, N; Tuncay, I; Akpinar, F
Isolated neuropathy of the cutaneous branch of the radial nerve is a rarely recognized pathology. It was described in 1932 by Wartenberg, who suggested the name cheiralgia paraesthetica. The syndrome is described as known the entrapment of the superficial branch of the radial nerve. Many different etiologic factors for chronic nerve entrapment have been described, however our case has an unusual cause. A 52 year old man had pain and paresthesia in the area over the lateral aspect of the wrist, thumb and first web six months after Colles' fracture. The patient underwent bony spike resection after fi re months with ineffective conservative treatment. He has satisfied after this operation. The case was presented because of disappearing his preoperative complaints after the operation with respect to Wartenberg's syndrome constituted a rare cause of bone spike which has not been mentioned in the literature.
Mathematical Relations Between the Lengths of the Metacarpal Bones and Phalanges: Surgical Significance
(Tohoku Univ Medical Press, 1998) Aydinlioglu, A; Akpinar, F; Tosun, N
The mathematical relationship between the lengths of the metacarpals and phalanges is important in hand surgery because of its role in determining the lengthening of the tubular bone size or the length of a prosthesis. The purpose of the present study is to perform the measurements on the hand radiographs, and to determine possible mathematical relations between the lengths of the metacarpals and phalanges. The lengths and widths of metacarpals and phalanges were measured in millimeters on hand roentgenograms of 100 normal voluntary subjects (50 men, 50 women) and the results were evaluated with a descriptive analysis test. The relations between the lengths of the metacarpals and phalanges were mathematically investigated on several sets of data. Unchangeable proportions between the metacarpals and phalanges lengths were found and formulated. Because any defects or faults of the hand, especially shortness, can corrected with current improved surgical techniques, a knowledge of the morphometric relations between the lengths of metacarpals and phalanges may be useful for such surgical interventions.
Morphologic Evaluation of the Ulna
(Taylor & Francis As, 2003) Akpinar, F; Aydinlioglu, A; Tosun, N; Tuncay, I
Intramedullary ulnar nailing may be technically difficult. We used various methods and measurements to determine the ideal nail entry point and the shape, length, diameter and curvature of the medullary canal in 44 human cadaver ulnas. We found that the ideal nail entry point was, on average, 7 mm proximal and 3 mm lateral to the most prominent area of the olecranon. A nail of 3 mm diameter could easily be inserted through a hole at the proximal-lateral side of the most prominent part of the olecranon, but only 20% of all nails could be easily inserted through a hole in the middle of the olecranon. We found that correct selection of a nail of proper length and diameter, as well as an ideal nail entry point on the olecranon are essential to successful nailing.
A Morphometric Study on the Humerus for Intramedullary Fixation
(Tohoku Univ Medical Press, 2003) Akpinar, F; Aydinlioglu, A; Tosun, N; Dogun, A; Tuncay, I; Ünal, Ö
In recent years, the popularity of intramedullary humeral nailing is on the rise in spite of its handicaps. There are many problems in intramedullary humeral. stabilization because of the anatomic structure of the bone. We performed various methods and measurements to determine shape, length and diameter and curvature of the medullary canal of the humerus in 57 human dry cadaver bones. Anterior angulation with an average of 21 cm apart from greater tubercle was found at 1/3 distal part. Mean degree of angulation was 9degrees (max: 15, minutes: 5, S.D.: 2.84). Humerus bones with septal aperture (supratrochlear foramen) at the fossa coronoidea were observed to have very narrow medullary canal. The best point for nail insertion was found to be an area on the line from greater tubercle anteromedially to caput humeri. This study revealed that carefully evaluated structure of humeral medullary canal and various congenital constructions such as septal aperture, and correct selection of a nail with proper length and diameter are essential for successful nailing.
Mri Demonstration of Cervical Spondylodiscitis and Distal Full-Length Bilateral Paraspinal Cold Abscesses Successfully Treated by Drug Regimen Only
(Springer, 2004) Ünal, Ö; Kayan, M; Akpinar, F; Çankaya, H; Akdeniz, N
Objective: Cold abscesses, although common in spinal tuberculosis, are usually localized to the level of infection, follow tissue planes, and may extend into the spinal canal at any level. They may cause symptoms resulting from neurovascular compression, hemorrhage, and direct mass effect. Design and patients: We present an unusual case of cervical tuberculous spondylodiscitis in a 25-year old man with a cold abscesses involving the retropharyngeal, mediastinal, and retroperitoneal areas bilaterally. The abscess tracked from the neck to the psoas muscles bilaterally. Following the diagnosis the patient received 9 months of antituberculous therapy. Results: MRI showed resolution on medical treatment alone. Conclusions: Even in the presence of massive paravertebral cold abscesses medical treatment alone may well suffice for this common worldwide disorder. MRI is ideal for monitoring regression of massive abscesses in deep anatomical locations.
Rocky Form Giant Synovial Chondromatosis: a Case Report
(Springer, 2006) Dogan, A; Harman, M; Uslu, M; Bayram, I; Akpinar, F
We report a case of painless synovial chondromatosis with an extremely large mass at the popliteal area related to the right knee joint. A hard mass at the posterior aspect of the knee was the only complaint reported by the patient. Plain X-ray studies revealed punctuated calcifications both intra-articularly and around the knee joint. With the surgical procedure performed subsequently, multiple rocky-hard giant chondroid nodules were excised from the posterior aspect of the knee. After 9 months following the surgery, the patient had full range of motion, and no complaints. We emphasize on the importance this case because these lesions may simulate tumors, and lead to misdiagnosis.
Symptomatic Os Triangulare. (Case Report)
(Masson Editeur, 1999) Akpinar, F; Aydinlioglu, A; Tosun, N
Os triangulare is an accessory bone found in the triangular cartilage of the wrist just distal to the end of the ulna and is generally asymptomatic. A case report of symptomatic Os triangulare is reported. Treatment associated immobilization and anti-inflammatory medication.
Total Bilateral Carpal Coalition With Carpometacarpal Fusion: One Case
(Masson Editeur, 2001) Tuncay, I; Akpinar, F; Unal, O; Aydinlioglu, A
Carpal coalition may involve more than two carpal bones wich is more common when coalition occurs as part of a syndrome of congenital malformations. We describe an unusual case of congenital complete entire carpal coalition with massive carpometacarpal coalition except the first carpometacarpal joint and abnormal distal radioulnar joint bilaterally. In addition, radiocarpal joint surfaces were slightly irregular but compatible. There were abnormal distal radioulnar joints and ulnar styloids articulated with the ulnar side of the lunate of the both wrists.