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Biomedical subjects

Işik Akgün

Publications and source records attributed to Işik Akgün.

8 recordsLinked to original sources
PubMed2005

The muscular branching patterns of the ulnar nerve to the flexor carpi ulnaris and flexor digitorum profundus muscles.

The branching pattern of the ulnar nerve in the forearm is of great importance in anterior transposition of the ulnar nerve for decompression after neuropathy of cubital tunnel syndrom and malformations resulting from distal end fractures of the humerus. In this study, 37 formalin-fixed forearms were used to demonstrate the muscular branching patterns from the main ulnar nerve to the flexor carpi ulnaris muscle (FCU) and ulnar part of the flexor digitorum profundus muscle (FDP). Eight branching patterns were found and classified into four groups according to the number of the muscular branches leaving the main ulnar nerve. Two (Group I) and three (Group II) branches left the main ulnar nerve in 18 and 17 forearms respectively. The remaining two specimens had four (Group III) and five (Group IV) branches each. Usually one or two branches were associated with the innervation of the FCU. However, in 2 cases, three and in one, four branches to FCU were observed. The FDP received a single branch in all cases, except in four, all of which had two branches. In six forearms, a common trunk was observed arising from the ulnar nerve to supply the FCU and FDP. The distribution of the muscular branches to the revealed muscles was outlined in figures and the distance of the origin of these branches from the interepicondylar line was measured in millimeters. The first muscular branch leaving the main ulnar nerve was the FCU-branch in all specimens. The terminal muscular branch of the ulnar nerve to the forearm muscles arose at the proximal 1/3 of the forearm in all specimens. In 7 forearms, Martin-Gruber anastomosis in form of median to ulnar was observed.

Aged↗
PubMed2005

[Open surgical treatment of posterior instability of the shoulder].

Posterior instability of the shoulder remains a diagnostic and therapeutic challenge, with a growing incidence especially in athletes. Evaluation of the type of the instability, whether unidirectional or multidirectional, is very important with regard to treatment. Although many patients benefit from strengthening and balancing rotator cuff muscles and scapular stabilizers, surgical procedures may be required in those unresponsive to conservative treatment. Posterior capsular shift is the method of choice to eliminate redundancy of the posterior and inferior capsules; moreover, in the presence of bone defects relating to the head of the glenoid or humerus, bony procedures should be added to the treatment.

Humans↗
PubMed2004

[Shoulder injuries: macrotraumas and overuse problems].

Injuries to the shoulder are becoming more frequent in pediatric and adolescent athletes with widespread participation in sports activities. These injuries can result from macrotraumas as well as microtraumas from repetitive stress. Injury patterns present differences in this age group due to peculiar physiologic and biomechanical features. Most shoulder problems in adolescent athletes can be treated conservatively with a good response, while some conditions require surgical reconstruction.

Adolescent↗
PubMed2003

Intra-articular hemangioma of the knee.

Intra-articular hemangioma of the knee is a rare cause of pain and spontaneous hemarthrosis, often seen as an internal derangement of the joint in children and young adults. The tumor is observed in two different forms: the synovial hemangioma or the arteriovenous malformation named also as hemangiohamartomas. They may cause hemorrhagic synovitis and arthropathy, probably as a result of recurrent episodes of intra-articular bleeding and mechanical irritation. Four cases of intra-articular hemangioma of the knee are presented in this study. Two of our cases were diagnosed as synovial hemangioma with the lesions localized inside the knee and the other 2 were intermediate type with the tumor extending to the muscle group and the skin. After magnetic resonance imaging and angiographic assessment, arthroscopic excision was performed in the localized type of the tumor. The other 2 cases received only diagnostic arthroscopy and biopsy followed by conservative treatment due to the extensive localization of the tumors and the serious chondral lesions. The decision of the treatment modality is very difficult in intra-articular hemangioma of the knee because, when combined with chondral degeneration, the incidence of local recurrence is high.

Adolescent↗
PubMed2003

Arthroscopic meniscectomy for discoid lateral meniscus in children and adolescents: 4.5 year follow-up.

We retrospectively reviewed the 4.5 year (range, 21-88 months) follow-up results of arthroscopic partial meniscectomies performed in 11 knees between 1994 and 2000 to treat a symptomatic discoid lateral meniscus. The average age at surgery was 11.5 years (range, 5-17 years). All except one of the discoid menisci were of a complete type, and all except three were torn menisci. At the latest follow-up examination, the result was excellent for nine knees, and good for two; no degenerative changes were evident on the roentgenograms. Arthroscopic partial meniscectomy should be the treatment of choice for the complete type symptomatic lateral discoid meniscus, even if it is intact. Preoperative lack of the knee extension requires a gentle rehabilitation program postoperatively.

Adolescent↗
PubMed2003

[Arthroscopy of the shoulder: general principles and stages for promoting competence].

Arthroscopic surgery of the shoulder has replaced several open procedures because of minimal morbidity. However, like other joint arthroscopic procedures, it involves a significant learning curve. In addition, it requires availability of special equipment and certain operating conditions. It is advisable to achieve enhanced experience and competence in diagnostic arthroscopy and then to practice arthroscopic surgery in a staged manner. This review aims to provide an outline of current knowledge about general principles of shoulder arthroscopy, diagnostic arthroscopy, and arthroscopic surgical procedures.

Arthroscopy↗
PubMed2002

[Total knee arthroplasty: a 4.5-year follow-up].

OBJECTIVES: To present the short- and mid-term follow-up results of primary total knee arthroplasty. METHODS: We performed a total of 97 cemented total knee replacements (47 right, 50 left) with posterior cruciate ligament retention in 66 patients (60 women, 6 men). The mean age at the time of surgery was 65.2 years (range 29 to 82 years). Preoperative diagnoses were primary osteoarthrosis (n=60), rheumatoid arthritis (n=3), systemic lupus erythematosus (n=2), and post-traumatic osteoarthritis (n=1). Thirty-one patients had bilateral knee replacements, of which 29 were performed at the same session. Pre- and postoperative clinical evaluations were made according to the clinical rating system of the Knee Society. Radiographic evaluations were made according to the Fairbank's criteria preoperatively, and to the total knee arthroplasty radiographic evaluation and scoring system of the Knee Society postoperatively. The mean follow-up was 4.5 years (range 24 to 98 months). RESULTS: Clinical results were good or excellent in 94.8 percent of patients. Complications encountered were deep infection in two patients, patellar dislocation in two patients, deep venous thrombosis in two patients, and patellar tendon rupture in one patient. The mean increases in knee and functional scores were 42.94 and 39.87, respectively. Improvement in the mean postoperative knee flexion was 35.72 degrees. The mean leg alignment was 6.3 degrees valgus. No components required revision because of aseptic loosening. CONCLUSION: Posterior cruciate ligament retaining implants were found to yield successful clinical and radiologic results during short- and mid-term follow-up period.

Adult↗