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Biomedical subjects

Haluk Vayvada

Publications and source records attributed to Haluk Vayvada.

16 recordsLinked to original sources
PubMed2006

Surgical management of ameloblastoma in the mandible: Segmental mandibulectomy and immediate reconstruction with free fibula or deep circumflex iliac artery flap (evaluation of the long-term esthetic and functional results).

PURPOSE: Ameloblastoma is responsible for 1% of all the oral and maxillomandibular cysts and tumors. It is odontogenic in origin and benign in nature but it has a high percentage of local recurrence rate and possible malignant development when treated inadequately. With the advancement of craniofacial surgical techniques, use of free flaps for mandibular reconstruction, and dental rehabilitation (such as osseointegration), the segmental mandibulectomy and immediate reconstruction with free flaps are beginning to be used more effectively for the treatment of the mandibular ameloblastoma. The aim of this article is to evaluate the clinical results of the patients with mandibular ameloblastoma who were treated with segmental mandibulectomy and immediate reconstruction with free flaps. PATIENTS AND METHODS: We present 11 patients who had segmental mandibulectomy and immediate reconstruction with free deep circumflex iliac artery or fibular flap for treatment of mandibular ameloblastoma. The average age of the patients was 25.4 years (range, 18-38 years). The patients were followed up for a mean of 29.3 months (range, 17-38 months). The functional and esthetic results were also evaluated by using a questionnaire in the long term. The questionnaire consisted of questions addressing oral continence, diet, social activities, speech, and facial appearance. RESULTS: All flaps survived totally. Recurrence was not detected during the follow-up period. It was found that all patients had good esthetic and functional results after immediate reconstruction. The social activities of patients also were not affected after treatment. CONCLUSIONS: We experienced that segmental mandibulectomy with safe borders and immediate reconstruction with free fibula flap or deep circumflex iliac artery (DCIA) flap is an ideal treatment method for mandibular ameloblastoma. The functional and esthetic results are also detected as very satisfactory for the patients.

Adolescent↗
PubMed2006

Total lower eyelid reconstruction using paranasal flap.

The main aim of this study is to evaluate the advantages, disadvantages, and aesthetic results of the total lower eyelid reconstruction with paranasal flap. The other reconstruction methods are also revisited.Ten patients, who were operated for the reconstruction of total lower eyelid defects between November, 1999 and April, 2005 in our department were included in this study. The total lower eyelid defects of all patients were reconstructed using paranasal flap for anterior lamella and chondromucosal, chondrocutaneous or mucosal graft for posterior lamella. Follow-up time was ranged between 3-35 months. The advantages, disadvantages and complications were defined and aesthetic results of the patients were also evaluated by using a questionnaire which was filled by patients at third month after reconstruction. All flaps and grafts survived, partial or total necrosis was not encountered but one patient with ectropion had a secondary reconstructive procedure. The aesthetic results of the patients were also satisfactory. The paranasal flap is very reliable and safe method for total lower eyelid reconstruction.

Adult↗
PubMed2005

Evaluation of results from reduction mammaplasty: relief of symptoms and patient satisfaction.

Reduction mammoplasty is one of the most common operations performed in plastic surgery clinics. Although patients present with functional symptoms, the aim of treatment usually is obtaining aesthetic satisfaction. This retrospective study evaluated charts and operation notes of patients and a self-assessment questionnaire. A detailed questionnaire form was sent to 121 patients who had undergone reduction mammaplasty at the Dokuz Eylul University Medical Faculty Plastic, Reconstructive, and Aesthetic Surgery Clinic between 1991 and 2001. The questionnaire asked the subjects about pre- and postoperative, physical, and psychosocial symptoms, as well as operative satisfaction. The results were evaluated with respect to different techniques. The findings showed that reduction mammaplasty remains a very satisfying procedure for most of the patients undergoing this operation, as indicated by the high rate of patient satisfaction. The limited number of studies in this area and the lack of groups conducting such work in our society indicates the importance of similar study.

Adolescent↗
PubMed2005

Management of close-range, high-energy shotgun and rifle wounds to the face.

Close-range, high-energy shotgun wounds of the face are life-threatening and devastating traumas of the face. Suicidal attempts are the main reason in the great majority of the patients in civilian life. There is no consensus on the timing of reconstruction for bone and soft tissue defects resulting from high-energy shotgun wounds. The conventional method is primary repair as soon as possible and serial debridements and definitive reconstruction in the delayed stage. An alternative to this approach is the immediate definitive surgical reconstruction of the patient during the first operation for acute management of trauma. We had 15 patients with close-range, high-energy shotgun wounds in 10 years. Six of 15 patients referred to our center for definitive reconstruction after the acute management of the patients were performed in another center and the rest were all admitted in the acute period. Either conventional approach with delayed reconstruction for 10 patients or immediate definitive surgical reconstruction for 5 patients was used. Immediate reconstruction eliminated disadvantages of the conventional method such as high infection and scarring rate and deformities resulting from contraction of tissues. The emotional conditions of the patients were evaluated and major depression signs were determined. Functional evaluation showed that there was great correlation between facial appearance after reconstruction and social activity level.

Adolescent↗
PubMed2004

Prevention of peritendinous adhesions following flexor tendon injury with seprafilm.

Peritendinous adhesions are the most important complication of flexor tendon injury. In this study, Seprafilm was used for the prevention of peritendinous adhesions following flexor tendon repair. Seprafilm Bioresorbable Membrane (Genzyme Corporation, Cambridge, MA) contains sodium hyaluronate and carboxymethyl cellulose. Thirty New Zealand white male rabbits were divided equally into 3 groups. In all groups, the deep flexor tendon of the third finger of the left back foot was cut and repaired by Kessler-Tajima suture technique. In the first study group following tendon repair, Seprafilm was wrapped around the repaired tendon. In the second study group, sodium hyaluronate gel was injected to the operation field after tendon repair. In the control group, no external material was applied to the field. The study groups had better range of motion. Histopathologically, study groups had less adhesions compared with the control groups. As a result, it was concluded that in rabbit the peritendinous adhesions following flexor tendon repairs could be lowered with Seprafilm and hyaluronic acid.

Animals↗
PubMed2004

[Distal phalanx metastasis in operated bronchial carcinoma].

A 54 years old man who admitted with thoracolomber pain and pain at left knee had history of left pneumonectomy four months ago for squamous cell lung carcinoma. At physical examination swelling and hotness at the left knee, swelling and redness of the distal phalanx of the right third finger were found. Distal phalanx was not observed at the X-ray which was taken for suspect of metastasis. Incision biopsy was performed from this lesion and microscopic findings of the material were evaluated as metastatic squamous cell carcinoma. Bone metastasis are seen frequently at bronchial carcinoma, but hand metastasis are seen in 0.2% of all cases. This case is represented because of the rare metastatic localisation of bronchial carcinoma.

Bone Neoplasms↗
PubMed2003

Giant ganglion cyst of the quadriceps femoris tendon.

We present the case of a ganglion cyst with 11 x 3 x 2 cm dimensions originating from the quadriceps femoris tendon. The patient presented with palpable mass and chronic pain in the anterolateral thigh region. The pain increased with walking. Ultrasonography and computed tomography revealed a cystic, well defined lesion in the vastus lateralis muscle. The patient was operated on and the cyst excised; it was seen to be a ganglion cyst. The patient is asymptomatic 6 months after surgery. This is a very rare localization for a giant synovial cyst, and preoperative diagnosis is a challenge for the surgeon.

Adolescent↗
PubMed2002

Reconstruction of soft tissue defects following total knee arthroplasty.

Soft tissue defects following total knee arthroplasty can represent serious problems for the patient and the surgeon. Perioperative soft tissue complications can result in loss of the prosthesis or limb. In this study, we present 17 cases with complex wounds following total knee arthroplasty who had surgery between May-1994 and July-2001. Patient-related factors, wound factors, surgical operation, secondary procedures, and duration of follow-up have been analysed for each patient. After local wound care and debridement, soft tissue defects have been covered with either a fasciocutaneous or gastrocnemius myocutaneous flap. All the knees (100%) have been salvaged although in 1 patient (6%) replacement of the prosthesis was necessary. In 5 patients (30%) secondary surgical procedures have been performed. Even though there is no consensus in the management of soft tissue defects following total knee arthroplasty, adequate wound care, including identification of infection, debridement, and early appropriate defect coverage should be the main points to consider.

Adult↗
PubMed2002

Effects of nerve growth factor on the neurotization of denervated muscles.

Studies on surgical repair techniques of the peripheral nerve are still trying to improve the outcome. There are many studies on the effects of various neurotrophic factors on the transected peripheral nerve. Muscular neurotization, which is the direct implantation of the nerve to the target denervated skeletal muscle, is one of the techniques used when the primary repair of the peripheral nerves is not possible. The effects of nerve growth factor (NGF), which is one of the primary neurotrophic factors, on the reinnervation of denervated muscles by neurotization is investigated in this experimental study. The denervated soleus muscle was neurotized via peroneal nerve implantation (group 1), and NGF was administered to the neurotized muscle (group 2). All animals were evaluated at weeks 8, 10, and 12 using electromyography. Muscle contractility, muscle weight, and histological morphometric tests were performed at week 12. The experimental groups were compared with each other and normal control values. Electromyographically, group 2 (direct nerve implantation + NGF) demonstrated better reinnervation in all evaluations. The study of muscle weight showed that the muscle mass was 75% of the normal soleus muscle in group 1 and was 85% of the normal side in group 2 at the end of week 12. In group 1, the twitch force was 56% of the normal soleus muscle and was 71% in group 2. Tetanic force was 53% of the normal soleus muscle in group 1 and 68% in group 2. Histological morphometric studies revealed that there was a decrease in the density of the motor end plates in group 1, but there was no statistically significant difference between the normal soleus muscles and the NGF applied to group 2. The positive effects of NGF on the neurotization of denervated muscles seen in this study suggest that it may be useful for treating some difficult reconstructions caused by denervation.

Animals↗
PubMed2002

Reverse temporalis muscle flap for the reconstruction of orbital exenteration defects.

Orbital exenteration is a surgical procedure that results in devastating functional and aesthetic losses. Many reconstructive techniques, ranging from spontaneous epithelialization to free flaps, have been described for orbital exenteration defects. The temporalis muscle flap is one of the most frequently used flaps to obliterate the orbital cavity, but only a small portion of the muscle can be used for this purpose because most of the muscle is used as the pedicle. The reverse temporalis muscle flap based on the superficial temporal vessels is a versatile flap by which the entire temporalis muscle can be elevated and carried to defects beyond the midline. The authors have used this flap for orbital reconstruction after exenteration in 6 patients with successful results. This flap enables placement of highly vascularized tissue that provides the reconstructive goals of primary healing, obliterates dead space with separation of the orbit from the nasal cavity or sinuses, provides the potential for early postoperative radiotherapy, and offers possible flaps that can be used in combination for complex, wide defects.

Aged↗
PubMedDate not supplied

Question mark ear deformity and a modified surgical correction method: a case report.

Question mark ear (Cosman ear) deformity, a rare congenital malformation, is characterized by a cleft between the helix and the ear lobe and marked prominence of the auricles. Although the features of question mark ear deformity are well described in the literature, there is no definitive surgical technique for repair of this deformity, Several surgical methods have been introduced for the correction of the deformity. These techniques mainly provide for repair of the cleft between the helix and ear lobe. However, marked prominence of the upper auricle usually is also present with the cleft. We modified the surgical technique to correct the cleft and the upper prominence at the same time. With this procedure, the cleft is exposed by raising a vertical cutaneous flap based on the cleft on the posterior side of the ear, After anterior scoring to form the antihelix and cleft repair using an ipsilateral conchal cartilage graft, the cutaneous flap is used to cover the cartilage graft and the flap donor site is closed primarily to facilitate restoration of the antihelix. The authors report on a patient with Cosman ear and introduce their modified technique that can be used for repair of the cleft between the helix and ear lobe and the prominence of the upper helix in the same procedure.

Child, Preschool↗