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Biomedical subjects

Z H Dailiana

Publications and source records attributed to Z H Dailiana.

11 recordsLinked to original sources
PubMed2005

Restoration of function and sensitivity utilizing a homodigital neurovascular island flap after amputation injuries of the fingertip.

Sixty-three fingertip amputations in 50 patients were reconstructed using a homodigital neurovascular island flap technique based on a single neurovascular pedicle without further shortening of the distal phalanx. The procedure was carried out under regional anaesthesia, using a tourniquet and magnifying loupes. All of the flaps survived and achieved normal or adequate two-point discrimination without any painful scar or cold hypersensitivity. Fifteen patients had some loss of distal interphalangeal joint extension. The technique is simple and presents an excellent method for fingertip reconstruction in Allen type II, III and IV injuries.

Adolescent↗
PubMed2004

Scaphoid nonunions treated with vascularised bone grafts: MRI assessment.

PURPOSE: To assess the value of MR imaging (MRI) with regard to union, graft viability and proximal pole bone marrow status, after use of vascularized bone grafts for treating scaphoid nonunions. MATERIALS AND METHODS: Vascularized bone grafts from the distal radius were used to treat 47 scaphoid nonunions resulting from fractures or enchondromas. Clinical and imaging evaluation was used for the pre- and postoperative assessment of all patients. Apart of conventional radiographs obtained in all cases, 15 patients were also assessed postoperatively with MRI at 3 months. From these 15 patients, eight were assessed preoperatively with MRI whereas nine had serial MRI evaluations at 6 and 12 months. The clinical follow-up time of this subgroup of 15 patients ranged from 6 to 27 months. RESULTS: All patients showed clinical signs of union within 12 weeks form the procedure and at the latest follow-up they experienced complete (10 cases) or almost complete (five cases) relief from pain. Both plain and contrast-enhanced MRI obtained at 3 months showed viability of the bone graft in all cases. At 3 months union was established with plain radiographs in 12 patients at both sides of the graft and in three patients between the graft and proximal pole. At 3 months plain MRI showed nonunion in four patients (two between graft and proximal pole, two between graft and distal pole and one at both sides of the graft) whereas contrast-enhanced MRI revealed only one case of nonunion between graft and proximal pole. Four patients were considered to have osteonecrosis of the proximal pole intraoperatively. Two of them showed necrosis of the proximal pole with preoperative and postoperative plain radiographs and three of them with plain postoperative MRI. Contrast-enhanced MRI at 3 months showed postoperative reversal of necrotic changes in all four scaphoids. MRI also revealed bone marrow oedema of the carpal bones surrounding the scaphoid in 14 cases. Serial MRI at 6 and 12 months, obtained in nine patients, revealed resolution of the bone marrow oedema of the surrounding bones and full graft incorporation in all cases. CONCLUSION: Contrast-enhanced MRI is able to demonstrate the early union after treatment of scaphoid nonunions with vascularised bone grafts allowing thus earlier mobilisation. In addition, MRI can assess the viability of the proximal pole and the graft as well as the postoperative bone marrow oedema-like lesions of the surrounding bones.

Adolescent↗
PubMed2001

Surgical anatomy of spinal accessory nerve: is trapezius functional deficit inevitable after division of the nerve?

The course of spinal accessory nerve in the posterior triangle, the innervation of the sternocleidomastoid and trapezius muscles and the contributions from the cervical plexus were studied in 20 cadaveric dissections. The nerve was most vulnerable to iatrogenic injuries after leaving the sternocleidomastoid. Direct innervation of trapezius by cervical plexus branches was noted in five dissections, whereas connections between the cervical plexus and the spinal accessory nerve were observed in 19 dissections. These were usually under the sternocleidomastoid (proximal to the level of division of the nerve in nerve transfer procedures). Although the contribution from the cervical plexus to trapezius innervation is considered minimal, trapezius function can be protected in neurotization procedures by transecting the spinal accessory nerve distal to its branches to the upper position of trapezius.

Accessory Nerve↗
PubMed2001

Longstanding nonunions of scaphoid fractures with bone loss: successful reconstruction with vascularized bone grafts.

Vascularized bone graft from the dorsum of distal radius was used to treat 22 nonunions of scaphoid fractures, with a mean delay of 4 years from the initial injury. Four of the eight patients with associated scapho-styloid arthritis also underwent a closing wedge osteotomy of the distal radius. Follow-up time ranged from 14 to 74 months. Union was accomplished in 6 to 12 weeks and wrist range of motion and grip strength improved postoperatively in all patients. Complete absence of pain was noted in 16 patients and the other six, all of whom had arthritic wrist changes or carpal collapse, only experienced pain with strenuous activities. The simple graft dissection, the avoidance of anastomoses and the lack of donor site morbidity are additional advantages to this surgical technique, which is successful even in cases with an avascular proximal pole.

Adult↗
PubMed2000

Surgical treatment of compression of the lateral antebrachial cutaneous nerve.

We describe an operation to relieve compression of the lateral antebrachial cutaneous nerve at the elbow. Between 1987 and 1997 we operated on seven patients, one with bilateral compression. In two the compression was associated with injury to biceps. A longitudinal or a transverse incision was carried out and the nerve was released from the deep fascia. Partial excision of the biceps aponeurosis was undertaken in the patients who did not have injury to biceps; some additional procedures were required for those patients with injuries. All patients had symptomatic relief.

Adult↗
PubMed1999

A glomus tumour with four recurrences.

A case of a glomus tumour of the distal segment of the ring finger, with four apparent recurrences in an 8-year period, is described. The patient was treated by two different surgeons (two and three times respectively) and obtained pain free intervals of between 4 and 11 months before recurrence. Histological examination confirmed the diagnosis of a glomus tumour in all five procedures. The location of the glomus tumour was defined preoperatively by high resolution MR imaging.

Adult↗
PubMed1999

Distal tibial epiphyseal fractures in adolescents.

The characteristic pattern of fusion of distal tibial epiphysis explains the special configuration of the fragments in the triplane fracture and the "juvenile" fracture of Tillaux in adolescents. The application of external rotation force produces Tillaux and triplane fractures of the lateral portion of the distal tibial epiphysis in patients with a mean age of 13.5 years. Eight patients, 13 to 15 years of age, with distal tibial epiphyseal fractures were treated in the last 12 years. Three of the fractures were classified as "juvenile" Tillaux fractures and five were triplane fractures. Open reduction and fixation of the tibia was accomplished by using either malleolar screws or K-wires. Follow-up time ranged from 1.5 to 11 years. All patients were evaluated subjectively and objectively after surgery. Objective evaluation included clinical assessment and radiographic evaluation. All patients regained full range of motion and no one complained of pain or joint stiffness. Radiographs confirmed that all fractures have healed without articular incongruity.

Adolescent↗
PubMed1997

Neuromas and gaps of sensory nerves of the hand: management using vein conduits.

This study analyzed the efficacy of an interposed vein conduit graft in eliminating symptoms of painful neuroma of sensory nerves of the hand and preventing recurrence after excising the pathologic tissue and bridging the concomitant gap with the distal nerve segment. Twenty-three patients underwent reconstruction of 25 palmar sensory nerve gaps ranging from 12 mm to 28 mm, as well as 2 dorsal gaps of 32 mm and 35 mm, respectively. Eighteen patients had symptomatic painful neuromas. Subjective and objective evaluation criteria were employed for assessment and were compared with data obtained from primary direct suturing in 25 digital nerves of 21 patients. Electrophysiologic measurements, including sensory nerve action potential and conduction velocity, were similar, with both groups having values significantly lower than normal control values. Two-point discrimination measurements were slightly inferior for the vein conduit-reconstructed nerves compared with results attained after direct suturing. However, neuroma symptoms were eliminated, and in combination with the return of adequate sensibility, all but 1 patient resumed full hand function.

Action Potentials↗
PubMed1996

Major ablative procedures in orthopaedic surgery.

In the presence of the notable progress in limb-sparing techniques afforded by the developments in microsurgery and musculoskeletal oncology, major ablative surgery of the extremities still remains a last-resort, yet powerful tool in managing patients with primary tumors in whom wide excision is not possible, as well as in cases with severe trauma to the limbs. During the last thirteen years, eight major ablative procedures were performed at the Department of Orthopaedic Surgery of the University of Ioannina Medical School. Seven out of the eight procedures were performed in patients with primary malignant tumors either because the anatomical location or multiple recurrences of the tumor did not allow removal by wide local excision or by amputation at a lower level. In one patient, the procedure was related to a severe, mangling trauma. Four illustrative cases of the eight major ablative procedures performed are reported to highlight the current indications of this rarely used, complex, and extensive surgery. The characteristic cases presented are: hemipelvectomy in a patient with chondrosarcoma of the pelvis, disarticulation of the hip in a patient with a malignant histiocytoma of the supracondylar area of the knee, forequarter amputation in a patient with a basal cell carcinoma of the axilla, and disarticulation of the shoulder in a patient with an incomplete nonviable amputation at the level of the shoulder girdle associated with severe damage to the brachial plexus and axillary artery. After a five to over a ten year follow-up, six of the eight patients who where subjected to major ablative procedures are doing well and are satisfactorily active. These cases reflect the dilemma that orthopaedic surgeons geons still face in selecting limb salvage or major ablative surgery in cases of aggressive malignant tumors to severe trauma.

Amputation, Surgical↗
PubMed1995

Three phase bone scanning and digital arteriograms for monitoring vascularized fibular grafts in femoral head necrosis.

In this prospective study the authors analysed the prognostic value of monitoring patency of the feedings vessels of the fibular graft, implanted into the femoral head to treat aseptic necrosis. In 26 patients (29 hips) we applied a three phase 99Tc-MDP Bone Scanning in the seventh postoperative day. One week later; 18 patients had a digital subtraction angiography of the lateral femoral circumflex artery and its branches. The patients were followed for average time of 22 months. The average Harris Hip Score of the affected hips improved clinically from 69.5 to 93.5. The vessels were patent prior to the wound closure. Phase I of the bone scan served as "radionuclide angiogram" and demonstrated patent vessels in all about three hips. The digital arteriograms demonstrated patent anastomotic sites in 15 out of 18 hips. Only in four of the fifteen arteriograms the vessels were visualized throughout the length of the graft. Two of the three hips with negative arteriograms have also had negative bone scans, both in patients with haemoglobinopathies. None of the patients required further surgery because of failure of the procedure. This study demonstrated that the phase I of the bone scan at the end of the first week postoperatively is very sensitive means for monitoring the viability of the graft. Digital arteriograms although more specific, were less sensitive. Early postoperative monitoring of the graft viability maintained high predictive value for the outcome of the treatment in the medium-term.

Adolescent↗