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Biomedical subjects

Gürkan Ozkoç

Publications and source records attributed to Gürkan Ozkoç.

15 recordsLinked to original sources
PubMed2005

Arthroscopic treatment of solitary benign intra-articular lesions of the knee that cause mechanical symptoms.

PURPOSE: Most cases of knee locking and giving-way are caused by meniscal tears, loose bodies, or chondral lesions. Intra-articular benign tumors or tumor-like lesions can present with symptoms that resemble acute mechanical derangement. From a database of 2,200 arthroscopic interventions, 19 cases of intra-articular masses that presented with catching and locking symptoms in the knee were retrospectively analyzed. TYPE OF STUDY: Case series. METHODS: Our review revealed 33 patients with benign intra-articular masses in the knee joint. Nineteen of these individuals had sought medical attention for mechanical symptoms of catching or locking. The other 14 patients had a variety of symptoms including pain, swelling, and limitation of knee motion, but did not have mechanical symptoms. Age, sex, history of trauma, knee pain and effusion, medical illnesses, physical examination, arthroscopic findings, and pathologic findings were noted. RESULTS: The average age of the 6 male and 13 female patients was 37.5 years (range, 18 to 58 years). Preoperative magnetic resonance imaging confirmed the diagnosis in 7 cases and 12 cases were diagnosed during knee arthroscopy. The mean follow-up time after surgery was 52.5 months (range, 6 to 120 months). Pathologic examination of the lesions revealed 15 cases of localized pigmented villonodular synovitis (79%), 1 lipoma arborescens (5%), 1 pseudocyst (5%), and 2 nonspecific synovial masses (11%). None of the lesions showed malignant transformation. CONCLUSIONS: Solitary benign intra-articular lesions should be considered a rare cause of mechanical knee symptoms. Localized pigmented villonodular synovitis originating from the extensor mechanism or fat pad is the most common solitary intra-articular mass lesion in the knee and usually arises in the patellofemoral compartment. Recurrence has not occurred in our series, which includes 14 of 19 patients with greater than 24 months follow-up. LEVEL OF EVIDENCE: Level IV.

Adolescent↗
PubMed2005

[Thermal assisted arthroscopic stabilization of unstable shoulder].

The use of nonablative thermal energy to shrink soft-tissue collagen results in ultrastructural and mechanical changes at temperatures 60 degrees C or above. Due to this effect, the fibrils undergo shortening and shrinkage. Arthroscopic thermal capsulorrhaphy has been used in the treatment of shoulder instabilities and posterior impingement syndrome; in particular, the presence of a Bankart lesion or a superior labral anterior posterior lesion requires a labral or capsulolabral repair. Despite ease of application, thermal techniques have higher complication rates, with no proven superiority over traditional suture techniques. Further studies are required to develop the most appropriate technique for tissue shrinkage without any associated tissue destruction. The mechanical properties and long-term durability of the newly produced collagen need to be analyzed, as well.

Arthroscopy↗
PubMed2004

Iatrogenic medial dislocation of hallucal sesamoids with hallux varus in an adolescent.

BACKGROUND: Iatrogenic hallux varus is a rare deformity linked to bunion surgery at late adult age. Here reported is the first adolescent case of acquired hallux varus and medial dislocation of both sesamoid bones. CASE REPORT: The patient had had a surgical intervention under his first metatarsophalangeal joint when he was 10 years old. Correction of the deformity with a tendon transfer and medial capsular release alone-as was recommended for adults-was impossible in this adolescent, 8 years after the index surgery. Excision of the contracted medial structures and repair of the lateral retinaculum of the fibular sesamoid obtained a perfect correction of the dislocated sesamoid bones.

Adolescent↗
PubMed2004

[A comparison between single- and two-staged bilateral total knee arthroplasty operations in terms of the amount of blood loss and transfusion, perioperative complications, hospital stay, and cost-effectiveness].

OBJECTIVES: We compared bilateral total knee arthroplasty (TKA) operations performed at a single session or at two separate sessions with respect to perioperative complications, the amount of blood loss and transfusion, the length of hospital stay, and the overall cost. METHODS: The study included 39 patients (34 females, 5 males; mean age 68.1 years; range 52 to 88 years) and 16 patients (13 females, 3 males; mean age 66.8 years; range 52 to 83 years) who underwent bilateral TKA for osteoarthritis at a single session and at two separate sessions, respectively. Staged operations were interspersed with a mean interval of 8.3 months (range 2 to 24 months). The two groups were compared with respect to perioperative complications, the amount of blood loss and transfusion, the length of hospitalization, and the overall cost. RESULTS: The amount of blood loss and transfusion, the length of intensive care unit stay, and the occurrence of perioperative complications did not differ significantly between single- and two-staged operations (p>0.05). However, the mean length of hospital stay (10.48 days versus 17.19 days; p=0.01) and the mean overall cost (p=0.03) were significantly less in single-staged operations. Perioperative complications accounted for 12.8% (n=5) and 25% (n=4) in single- and two-staged operations, respectively, all of which developed in patients who had a preexisting cardiologic disease. CONCLUSION: In view of its advantages, single-staged bilateral TKA seems to be an appropriate alternative in selected patients.

Aged↗
PubMed2003

Type 4 median nerve entrapment in a child after elbow dislocation.

UNLABELLED: CASE STUDIED: Median nerve entrapment is a rare, serious complication of elbow dislocation. We report a Type 4 median nerve entrapment after elbow dislocation in a 10-year-old boy. Radiologically Matev's sign and a new radiological finding-a sclerotic tunnel at the lateral side of the olecranon-were seen. TREATMENT: The patient was treated by excising the damaged segment and reanastomosing the nerve 13 months after the injury.

Child↗
PubMed2003

Benign noninfectious subcutaneous emphysema of the hand.

A 17-year-old girl presented pain and subcutaneous crepitation in the left hand. Because of lack of systemic symptoms, non-infectious cause was considered. Radiographic and magnetic resonance imaging revealed subcutaneous emphysema. A chest x-ray was reported as normal but chest computerised tomography revealed pneumomediastinum. On the third day of the hospitalisation, subcutaneous emphysema spread to arm, shoulder, head, left hemithorax, back, bilateral supraclavicular, cervical, submandibular and periorbital regions. Pneumomediastinum and subcutaneous emphysema disappeared during 6 weeks of follow up with conservative methods. This might have prevented unnecessary surgical intervention. This report demonstrates that benign non-infectious subcutaneous emphysema of the hand due to pneumomediastinum should be kept in mind in hand surgery.

Adolescent↗
PubMed2003

Primary hydatid disease of the quadriceps muscle: a rare localization.

BACKGROUND: Hydatidosis is a protozoal infestation which generally involves the liver and the lungs. Primary skeletal muscle hydatidosis without involving the thoracic and abdominal organs is extremely rare. METHODS: A 48-year-old farmer presented with a mass in the quadriceps muscle that had persisted for 10 years. Clinical and radiological investigations revealed a primary hydatid cyst of the vastus medialis of the quadriceps muscle. We did not find any visceral organ involvement. Wide excision was performed without destroying the cyst wall. Then 400 mg albendazole was given daily for 3 months postoperatively. RESULTS: At the 7th postoperative month, the patient was symptom-free, and the laboratory test results were in the normal ranges. CONCLUSION: Primary muscular hydatidosis is a rare disease and should be kept in mind in the diagnostic work-up of a cystic mass of a skeletal muscle.

Albendazole↗
PubMed2003

[Arthroscopic assisted biceps tenodesis].

OBJECTIVES: Functional results of arthroscopic assisted biceps tenodesis were evaluated in patients with chronic biceps tendinitis. METHODS: The study included six patients (4 women, 2 men, mean age 55 years, range 47 to 60 years) who underwent arthroscopic assisted biceps tenodesis with a diagnosis of chronic biceps tendinitis. During tenodesis, the biceps tendon was secured with the use of key-hole technique in one patient, and with suture anchors in five patients. The patients were evaluated by the Constant shoulder scoring system. The mean follow-up was 12 months (range 6 to 36 months). RESULTS: All the patients had shoulder impingement syndrome, five patients had rotator cuff lesions, and one patient had os acromiale. The mean preoperative and postoperative Constant scores were 62 (range 60 to 65) and 84.2 (range 82 to 87), respectively. All patients returned to work within a mean of six weeks. No complications were observed during follow-up. CONCLUSION: Arthroscopic assisted biceps tenodesis may give successful results in patients with chronic biceps tendinitis with coexistent shoulder impingement syndrome or rotator cuff lesions.

Arthroscopy↗
PubMed2003

[Arthroscopic capsular release for frozen shoulder].

OBJECTIVES: This study was designed to evaluate the results and technical considerations of arthroscopic capsular release of the glenohumeral joint in frozen shoulder disease. METHODS: Arthroscopic capsular release was performed in 16 patients (11 women, 5 men; mean age 51 years; range 40 to 60 years) unresponsive to physical therapy. The affected shoulder was on the right in 10 patients, and on the left in six, being on the dominant side in 12 patients. The duration of the patients' complaints ranged from six to 24 months. Preoperatively, the mean forward flexion was 92 degrees, external rotation was 14 degrees; the ranges of internal rotation were the trochanter in four patients, the gluteal region in seven patients, the lumbosacral region in one patient, the L3 level in one patient, and T12 level in three patients. Functional evaluations were made according to the Constant scoring system. The mean follow-up was 17.3 months (range 12 to 30 months). RESULTS: Postoperatively, the mean forward flexion and external rotation increased to 135 and 27 degrees, respectively. Internal rotation reached the gluteal region in two patients, the lumbosacral region in two patients, the L3 level in two patients, T12 level in nine patients, and the interscapular region in one patient. The mean Constant score improved by 47 points. CONCLUSION: Arthroscopic capsular release is a safe and effective surgical procedure in the management of frozen shoulder disease unresponsive to conservative treatment.

Adult↗
PubMed2003

[Anatomy, biomechanics, and physiopathology of the rotator cuff].

Rotator cuff disease is the most common cause of shoulder pain and dysfunction in adults. Despite the significant amount of pain and disability related to rotator cuff pathology, there is insufficient information to guide the clinician in planning therapeutic interventions. In this article, we reviewed the anatomy, biomechanics, and pathophysiology of the rotator cuff in an attempt to cover recent literature thereof. A consensus is now emerging that the etiology of rotator cuff disease is multifactorial, including extrinsic and intrinsic factors. Further investigations are needed to clarify the mechanisms and the pathogenesis of rotator cuff disease, as well as the effectiveness of various treatment modalities.

Biomechanical Phenomena↗
PubMed2002

[Suprascapular nerve entrapment at the spinoglenoid notch secondary to a ganglion cyst].

Suprascapular neuropathy may occur as a result of traction, direct trauma, repetitive microtraumas, and extrinsic compression. A thirty-one-year-old man presented with non-traumatic complaints of right shoulder pain and stiffness. After exclusion of other causes associated with shoulder pain, a diagnosis of suprascapular nerve entrapment was considered. Electromyographic activity of the right shoulder was compared with that of the left side and involvement of the infraspinatus muscle was detected, with the supraspinatus muscle appearing normal. Magnetic resonance imaging revealed a ganglion cyst around the spinoglenoid notch. The patient underwent arthroscopic examination and open cyst excision. Arthroscopy did not show any labral tears. Pathological diagnosis was made as a cystic ganglion. On follow-up examinations, the patient's complaints disappeared and only minimal infraspinatus muscle atrophy was observed. Suprascapular nerve entrapment should be considered in the differential diagnosis of posterior shoulder pain.

Adult↗
PubMed2002

[Arthroscopic treatment of rotator cuff calcifying tendinitis].

OBJECTIVES: We evaluated the effectiveness of arthroscopic treatment in patients with rotator cuff calcifying tendinitis unresponsive to conservative treatment. METHODS: Arthroscopic treatment was performed in 10 patients (6 females, 4 males; mean age 46 years; range 34 to 53 years) in whom pain and functional disability persisted for more than a year despite conservative therapy for rotator cuff calcifying tendinitis. Arthroscopic bursectomy was also carried out. One patient underwent repair for rotator cuff tear. The patients were evaluated before and after surgery with the use of Constant scores and direct radiographs. The mean follow-up period was 12 months (range 6 to 19 months). RESULTS: The mean Constant scores were 66 (range 45 to 70) and 93 (range 89 to 96) before surgery and on final examinations, respectively. Postoperative radiographs demonstrated incomplete removal of calcifications in four patients; however, complaints of pain disappeared in these patients and radiologic controls showed that residual deposits underwent spontaneous resorption. CONCLUSION: Arthroscopic removal of calcium deposits together with bursectomy seems to be effective and reliable in patients with chronic calcifying tendinitis unresponsive to conservative treatment.

Adult↗
PubMedDate not supplied

Hallucal sesamoid osteonecrosis: an overlooked cause of forefoot pain.

Four cases of osteonecrosis of hallucal sesamoids are reported here. Surgical excision of necrotic sesamoid tissue yielded satisfactory results, with the patients reporting no residual pain. Although it has not been frequently addressed in the literature, avascular necrosis of the sesamoid bones should be considered in the differential diagnosis of persistent forefoot pain.

Adult↗
PubMedDate not supplied

Treatment of developmental dysplasia of the hip before walking: results of closed reduction and immobilization in hip spica cast.

We retrospectively evaluated 200 hips of 129 patients with the diagnosis of developmental dysplasia of the hip treated with closed reduction and hip spica cast. There were 153 female and 47 male hips in the group. The mean age of the patients at the time of the reduction were six (range. 2-13) months and mean follow-up was 51 (range: 16-240) months. All the patients were treated with closed reduction and were immobilized in hip spica cast. The mean time of immobilization in the cast was 102 (range: 45-190) days. Avascular necrosis was observed in 15% of the hips. Clinical and radiological end results of the patients were evaluated with modified McKay criteria and Severin classification. Eighty-two percent of the patients had satisfactory results according to modified McKay criteria and 76% of the patients according to Severin classification. The most important parameters affecting the end result were pre-reduction location of the hip, pre-operative acetabular index values and avascular necrosis. Based on the results of this study, treatment of developmental hip dysplasia with closed reduction and hip spica cast is a relatively safe and effective method.

Casts, Surgical↗