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Biomedical subjects

M Y Nahabedian

Publications and source records attributed to M Y Nahabedian.

At least 19 recordsLinked to original sources
PubMed2001

Operative management of neuromatous knee pain: patient selection and outcome.

The management of intractable knee pain secondary to neuromata continues to be optimized. Forty-three patients with intractable knee pain were studied prospectively. Consideration for this procedure requires pain of at least a 1-year duration, failure of conservative management, pain localization at a Tinel's point, and at least a 5-point reduction of pain on a visual analog scale after nerve blockade with 1% lidocaine. Thirty patients met the criteria for the procedure and 25 patients underwent the procedure. Mean patient age was 50.3 years and mean duration of pain was 6.6 years. Pain etiology included total knee replacement in 10 patients and trauma in 15 patients. Mean number of prior operations on the knee was 5.1. Sixty-two nerves were excised in the 25 patients, including the infrapatellar branch of the saphenous nerve (N = 24), the tibiofibular branch of the peroneal nerve (N = 5), the medial retinacular nerve (N = 12), the lateral retinacular nerve (N = 8), the medial cutaneous nerve (N = 6), the anterior cutaneous nerve (N = 3), and the lateral femoral cutaneous nerve (N = 4). Complete pain relief was obtained in 11 patients (44%). Partial pain relief was reported in 10 patients (40%). No pain relief was reported in 4 patients (16%). Follow-up ranged from 1 to 4 years. Selective denervation for neuromatous knee pain is beneficial in select patients. Patient satisfaction was 84% (21 of 25 patients) after the procedure. No patient was made worse.

Adult↗
PubMed2001

Utility of the lateral arm flap in head and neck reconstruction.

Soft-tissue defects of the head and neck are often reconstructed with fasciocutaneous free flaps. The radial forearm flap is used most commonly, however the lateral arm flap may be the flap of choice in certain situations. Advantages include flap elevation with simultaneous tumor ablation, avoidance of intraoperative patient position changes, and primary closure of the donor site. After extirpative procedures of the head and neck region, 4 patients were reconstructed with the lateral arm flap. Flap survival was 100%, a vein graft to supplement the short pedicle length was necessary in 1 patient, all donor sites were closed primarily, and secondary procedures to reduce flap bulk were necessary in 2 patients. The lateral arm flap is an excellent alternative to the radial forearm flap and should be included in the armamentarium of the reconstructive head and neck surgeon.

Adult↗
PubMed2001

Improved mandible function after hemimandibulectomy, condylar head preservation, and vascularized fibular reconstruction.

Temporomandibular joint dysfunction after tumor extirpation of the hemimandible is a frequent sequela after condylar head reconstruction. Condylar head resection is often performed because of oncological and vascular considerations. Recent studies have demonstrated that malignancies of the mandibular ramus and body rarely involve the condylar head, and that the vascularity and supportive structures of the condylar head are sufficient to maintain viability and function. This study demonstrates that temporomandibular joint function is preserved after hemimandibulectomy without resection of the condylar head. Fixation of a vascularized fibular flap to the condylar head is performed in situ. Condylar viability and growth is maintained with painless incisal opening. The condylar head is a growth center for the mandible in the pediatric population. Its preservation in these patients will avoid the long-term problems associated with growth center loss such as malocclusion and concomitant maxillary deformity.

Aged↗
PubMed2001

Management strategies for pyoderma gangrenosum: case studies and review of literature.

Pyoderma gangrenosum (PG) is a systemic disease with cutaneous manifestations consisting of necrotizing ulceration. The etiology of PG is controversial, and optimal management strategies have not been established. Current management is primarily medical to control the systemic inflammatory process, with occasional surgical intervention at the ulcer site. Based on the current literature and on the authors' clinical experience, the optimal outcome depends on early diagnoses and a combination of medical and surgical therapy. Initial management is directed toward medical control of the inflammatory process and local wound care. Surgical strategies involve recipient site preparation via local wound care and serial allograft followed by autologous skin graft or muscle flap coverage when necessary. Long-term wound stabilization is obtained only through control of the systemic and local inflammatory process.

Aged↗
PubMed2000

Correction of frontal bone hypertrophy with setback osteotomy and hydroxyapatite cement.

This case report illustrates a method of correction for severe hypertrophy of the frontal bone. Accurate preoperative assessment including physical examination, photographs, and radiological studies are necessary. The anterior table of the frontal bone is removed, recontoured, and stabilized to the adjacent bone while maintaining the integrity of the frontal sinus mucosa. Hydroxyapatite cement is used to resurface and contour the frontal bone. This method is demonstrated to be safe and well tolerated, and should be considered as the procedure of choice for this condition.

Adult↗
PubMed2000

Giant plexiform neurofibroma of the back.

Complete excision of a giant neurofibroma can be technically difficult. Thorough preoperative planning with magnetic resonance imaging, computed tomography, and arteriography are indicated to define the extent of the mass and to facilitate operative planning. By following the treatment guidelines discussed in this case report, the authors feel that these tumors can be excised safely with minimal morbidity.

Adult↗
PubMed2000

Multiple-digit onychomycosis: a simple surgical cure.

The management of intractable onychomycosis involving multiple fingernails continues to be optimized. Failure of pharmacological treatment necessitates operative intervention. Current surgical procedures are complex and have frequent donor site complications. This report describes a safe, simple, and effective surgical treatment that eradicates the disease, results in low morbidity, and yields high patient satisfaction.

Adult↗
PubMed2000

Medial pedicle reduction mammaplasty for severe mammary hypertrophy.

Current options in reduction mammaplasty for severe mammary hypertrophy include amputation with free-nipple graft as well as the inferior pedicle and bipedicle techniques. Complications of these procedures include nipple-areola necrosis, insensitivity, and hypopigmentation. The purpose of this study was to determine whether medial pedicle reduction mammaplasty can minimize these complications. Twenty-three patients with severe mammary hypertrophy were studied. The medial pedicle successfully transposed the nipple-areola complex in 44 of 45 breasts (98 percent). Mean change in nipple position was 17.1 cm, and mean weight of tissue removed was 1604 g per breast. Nipple-areola sensation was retained in 43 of 44 breasts (98 percent) using a medial pedicle. Hypopigmentation was not observed, and central breast projection was restored in all patients. This study has demonstrated that medial pedicle reduction mammaplasty is a safe and reliable technique and should be given primary consideration in cases of severe mammary hypertrophy.

Adolescent↗
PubMed1999

Operative management and outcome of complex wounds following total knee arthroplasty.

This study describes the treatment protocol for and the outcome of the management of complex wounds around total knee replacements. An analysis of 28 patients (29 knees) with complex defects who had surgery between January 1, 1986, and July 30, 1996, was performed. A specific management protocol was applied to each knee on the basis of the size and depth of the wound, the presence of infection, and the quality of soft tissue. Primary treatment included local wound care, debridement, and skin grafting or coverage with a fasciocutaneous flap, pedicled muscle flap, or free muscle transfer. Postoperatively, knees were evaluated using the Knee Society objective score. Successful salvage of the lower extremity was obtained in 28 knees (97 percent) and of the knee prosthesis in 24 of 29 knees (83 percent). Secondary plastic surgery procedures were necessary in five knees (17 percent), and secondary orthopedic procedures were necessary in four knees (14 percent). Successful salvage of total knee arthroplasty in the presence of a complex wound requires early identification of infection, aggressive irrigation and debridement, and early appropriate soft-tissue coverage. The use of our proposed algorithm will facilitate management of these complex wounds.

Adult↗
PubMed1998

Thermal injuries in autogenous tissue breast reconstruction.

We report on four patients with partial and full thickness burns following autogenous tissue breast reconstruction. Three burns were confined to the flap and one burn involved the flap and rim of adjacent skin. Heat sources included a heating pad (n = 3) and sunlight through a bathing suit (n = 1). The injuries occurred from 6 days to 4 years following the reconstruction. The burns were the result of impaired thermoregulatory capacity of transplanted tissue. All wounds healed with local wound care or debridement and skin grafting.

Adult↗
PubMed1998

Successful reinnervation of the penis using an autogenous vein conduit.

Injury to the dorsal sensory nerve of the penis following penile prosthesis insertion is extremely rare. The authors report on a patient with insensitivity involving the right penile shaft and glans secondary to entrapment and fibrosis of the dorsal cutaneous nerve of the penis, following penile prosthesis insertion. Following resection of a 2-cm segment of fibrosed nerve, penile sensation was successfully restored using an autogenous vein graft conduit between the proximal and distal nerve segments.

Humans↗
PubMed1998

Salvage procedures for complex soft tissue defects of the knee.

The management options for complex soft tissue defects about the knee are varied. Limb threatening conditions such as exposure of joint prosthesis or bone requires stable coverage to avoid amputation. A study was conducted to review the authors' management protocol and experience with complex defects about the knee. A retrospective analysis from 1986 to 1996 of 35 patients with complex defects about the knee was performed. Treatment options were based on the nature, size, location, and depth of the wound. A specific management protocol was applied for each patient. Treatments included local wound care, debridement and skin graft, fasciocutaneous flap, pedicled muscle flap, and free muscle transfer. Postoperatively, patients were evaluated using Knee Society objective and functional scores and other instruments to measure outcome. Successful salvage of the lower extremity was obtained in 34 (97%) patients. Salvage of the total knee prosthesis was obtained in 24 of 29 (83%) patients. Secondary plastic surgery procedures were necessary in eight (23%) patients. Secondary orthopaedic procedures were necessary in five (15%) patients. No patient required an amputation.

Adult↗
PubMed1998

Selective denervation of the knee: experience, case reports, and technical notes.

This article outlines the indications and technique of selective denervation for chronic knee pain secondary to neuromata from prior surgery or trauma and describes the results obtained in a series of patients who underwent selective denervation for neuromatous knee. Of the 13 patients in this series, 3 (23%) rated their outcome as excellent, 7 (54%) rated the outcome as good, and 3 (23%) rated the outcome as poor; no patient rated the outcome as worse. Several case reports are included to illustrate the procedure. This technique should be considered an option in select patients with neuromatous knee pain.

Adult↗
PubMed1997

Outcome of the operative management of nerve injuries in the ilioinguinal region.

BACKGROUND: Injuries to the ilioinguinal, iliohypogastric, and genitofemoral nerves can result in pain in the inguinal region. STUDY DESIGN: A retrospective analysis of 13 patients with such injuries is reported, with emphasis on the cause of the injury, diagnosis, and the outcome of operative management. RESULTS: The causes of the injuries included appendectomy, inguinal herniorrhaphy, inguinal lymph node dissection, orchiectomy, total abdominal hysterectomy, abdominoplasty, iliac crest bone graft, and femoral catheter placement. Diagnosis of the injury was based on patient history and physical examination. CONCLUSIONS: The outcome of operative management was graded as excellent (n = 10) and good (n = 3). Patient satisfaction was high postoperatively; all were able to return to their normal activity level.

Adult↗