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At least 1,513 records · Page 84Linked to original sources
PubMed1994

[Bone distraction using an external fixator: a new mandibular lengthening technic. A preliminary study apropos of 2 cases of children with mandibular hypoplasia].

The authors expose a technical innovation concerning mandibular lengthening without any bone graft, by applying to the mandibular Ilizarov's principles about limb lengthening by osseous distraction. This surgical technique concerns children with mandibular hypoplasia, like the Hanhart's syndrome (aglossia-adactylia, first observation), or Hemifacial Microsomia (second observation). The purpose of this new technique is mandibular lengthening with functional and aesthetic correction of the mandibular growth deficiency, and minimal morbidity. A specialist staff is essential to realize a distraction device with his minimal and appropriate shape for children, as well as a protection device conception. This external distraction device is placed with transmandibular pins. After mandibular corticotomy by endobuccal incision, the distraction is accomplished, at home by the parents, at the rythm of 1 mm p. two days. The distraction goes on about 2 months, depending on the lack of mandibular growth, and a retention device, much more light, is necessary during 8 weeks more to stabilize the osteogenesis. At the term of an eight weeks gradual distraction, the mandibular lengthening is 17.5 mm for the horizontal ramus (first observation), and 13 mm for the vertical ramus (second observation). The functional and aesthetic results, the swift and secure surgical procedure, lead to put forward this mandibular distraction technique in any mandibular or facial defects.

Abnormalities, Multiple↗
PubMedDate not supplied

First metatarsophalangeal joint arthrodesis utilizing a mini-Hoffman External Fixator.

Arthrodesis was initially indicated for severe hallux valgus and hallux rigidus. Today, it is primarily a salvage procedure, which provides a painless first metatarsophalangeal joint. This manuscript reviews the various procedures for arthrodesis of the first metatarsophalangeal joint. A case report is presented utilizing arthrodesis as a salvage procedure for a painful first metatarsophalangeal joint, after previously failed procedures.

Adult↗
PubMed2004

External fixation for distraction osteogenesis.

Distraction osteogenesis methods are indicated in cases of deformity when alternative surgery is not able to produce adequate anatomic restoration and functionality of the foot and ankle. Recent advances in deformity evaluation and techniques of correction may encourage a greater number of surgeons to incorporate distraction osteogenesis into their treatment of complex foot and ankle problems.

Adult↗
PubMed1996

Protocols for the care of external fixator pin sites.

Pin site care methods used in the UK are based on doctor/nurse preference rather than research. There is a diversity of opinion regarding the best method of pin site care, and no standardised classification of pin site problems. There is a need for further research, either a multi-centre trial or in units with a high volume of work.

Bandages↗
PubMed1991

Diagnostic external fixation of two carpal bones. A technical note.

Ulnar midcarpal instability can be treated by ligament repair or by a partial arthrodesis between the triquetrum and the hamate. If a partial arthrodesis is planned, we perform an ultimate diagnostic test to determine whether or not a subsequent definitive partial arthrodesis would be effective in controlling the feeling of weakness and instability.

Arthrodesis↗
PubMed1992

[An unusual example of primary weight bearing stability of a limb fracture of the oryx antelope after external fixation with the original Ilisarov fixator].

This paper reports the stabilization of an open comminuted fracture of the metatarsus of a rare white Arabian oryx using an original Ilisarov-fixator. The antelope (weighing 75 kg!) walked with its full weight on the stabilized leg immediately after operative treatment, thus demonstrating the high degree of stability of such a system. In our opinion, the Ilisarow technique is, in selected cases, an adequate method for stabilizing highly unstable open fractures in veterinary practice.

Animals↗
PubMed2000

[Treatment of intra-articular calcaneus fractures with a para-articular external fixator]].

Operative treatment of the calcaneus is still in discussion. For a better management of soft tissue problems an optimized fixator frame for primary treatment of calcaneus fractures was developed in the Dept. of trauma surgery University of Kiel. A one-plane bilateral construction with one insertion point in the tibia and two in the tuberosity of calcaneus is used. It allows efficient reduction by ligamentotaxis, stable fixation and active motion in ankle joint. We treated 40 patients with 45 calcaneus fractures. In 25 cases the fixator was definite and later plate or screw fixation was performed 20 times. 35 patients with 40 fractures were examined by means of the "Kiel score for calcaneus fractures". Patients who were treated definite reached better longterm-results on average than patients who underwent a secondary open osteosynthesis. Concrete guidelines for the therapy of intraarticular calcaneus fractures are presented.

Calcaneus↗
PubMed1997

Fracture of the tibial diaphysis treated by external fixation and the axial alignment grid: a single surgeon's experience.

The results of tibial fracture fixation for 50 unstable closed and open fractures, using the dynamic axial fixator (DAF) and the limb axial alignment grid have been assessed both clinically and radiologically. Each patient has been carefully followed up in a dedicated clinic and each procedure was conducted or directly supervised by the senior author. All patients achieved union, although 16 per cent required a further procedure such as bone grafting or fibula osteotomy to secure this and a further 6 per cent were revised to intramedullary nails. There was a malunion rate of 16 per cent, but no patients requested further treatment for functional problems. The incidence of pin-site infection was 10.4 per cent, each patient taking responsibility for their own pin-site care. There were no deep infections. The results achieved in this series compare favourably with those of other treatment modalities for this fracture, which may often be difficult to manage. Given the stringent adherence to the important principles of fixator application and well supervised follow-up which are practised on this unit, we believe that the results as presented here may well represent the limit achievable with this device. Furthermore, the authors would recommend that the technique remains an important option in tibial fracture management, particularly for the unstable closed and open fractures.

Adolescent↗
PubMed2005

Dynamic intradigital external fixation for proximal interphalangeal joint fracture dislocations.

PURPOSE: Many skeletal traction devices have been described to treat fracture dislocations of the proximal interphalangeal (PIP) joint. Most of these techniques are technically challenging or involve cumbersome frames. We present a design modification that enhances the stability of a simple dynamic fixation system described previously and report our results with this technique. METHODS: A previously described simple dynamic fixator with no rubber bands was applied to 6 patients who sustained fracture dislocations of the PIP joint. The middle finger was involved in 3 patients, the ring finger in 1 patient, and the small finger in 2 patients. The average age of the patients was 27 years (range, 21-42 y). The average involvement of the base of the middle phalanx was 48% (range, 35% to 60%). The average time from the injury to the surgery was 6 days (range, 1-14 d). The average follow-up period was 24 months (range, 7-43 mo). Immediate active flexion extension was allowed and the fixator was removed after 3 to 4 weeks. RESULTS: The average range of motion of the PIP joint at the final follow-up evaluation was 5 degrees to 89 degrees (range, 0 degrees to 100 degrees ). Two patients developed pin track infection that resolved with oral antibiotics. Only one patient complained of mild pain with extreme flexion. Proper reduction and congruency of the joint was noted on final anteroposterior and lateral radiographs. CONCLUSIONS: A simple dynamic fixator for the treatment of unstable PIP joint fracture dislocations was used successfully in 6 digits to maintain reduction and restore digital range of motion. The addition of modifications to the original technique not only improves the solidity of the construct but also provides satisfactory functional results. Based on our experience we recommend this easy technique to treat fracture dislocations of the PIP joint.

Adult↗
PubMed2005

Treatment of intertrochanteric fractures in geriatric patients with a modified external fixator.

Forty-two geriatric patients who had an intertrochanteric fracture were treated with a semicircular modification of the Ilizarov frame designed by Cattaneo and Catagni between January 1997 and September 2001. Twenty-five of the patients were female, 17 male. The average age of the patients was 77.5 years (range, 63-99). No intraoperative complication occurred. Deep pin-track infection was found in four patients and varus deformity was observed in two patients and shortening of less than 2 cm in 10 patients. Fixator removal was achieved in a mean time of 12 weeks (range, 10-18). No implant failure, refracture or stiffness of knee and hip joint movements was recorded. We concluded that the treatment of intertrochanteric fractures of the elderly patients with our modification provides significant advantages such as minimal operative and anaesthetic risks, no blood loss, early weight-bearing, short hospitalisation time and rapid union time.

Aged↗
PubMedDate not supplied

[Determination of limb loading parameters on standard external fixators].

For the compression-traction osteosynthesis system CTS, the grounds for evaluating the existing parasitic deformity of loaded apparatus elements, such as pins and rings are shown. The measuring procedure for testing the axial and angular rigidity of a regenerate zone is presented. The angular rigidity is estimated by the ellipse of rigidities, i.e. by three parameters: a vector of the maximum rigidity (CU), a vector of the minimum rigidity (CV) and an azimuth of CU position in the ring plane. Some more useful functions of CTS, including the posthospital treatment of patients are described.

Biomechanical Phenomena↗
PubMed2002

Reduced lengthening index by use of bifocal osteotomy in the tibia: comparison of monofocal and bifocal procedures with the Ilizarov external fixator.

We lengthened 63 tibial segments in 49 patients, performing a monofocal osteotomy on 31 segments and a bifocal osteotomy on 32 segments. In the monofocal osteotomy group, the average lengthening was 4.8 (2.4-7.1) cm with a lengthening index (LI) of 1.7 (0.9-4.4) months/cm. In the bifocal osteotomy group, the average lengthening was 7.4 (4.9-10.0) cm and with a LI of 1.0 (0.7-2.1) months/cm. The difference in LI between the groups was statistically significant, but more major complications, like persistent ankle joint contracture and pseudarthrosis in the callotasis lengthening zone, occurred with bifocal lengthening.

Adolescent↗
PubMed1991

Joint slippage in the Hoffmann external fixator. No effect of loading rate in bench experiments.

For tibial fractures, half-frames, such as the Hoffmann fixation device, sometimes fail when subjected to weight-bearing loads. Because the joints of the Hoffmann system are known to slip, which could lead to frame failure, three interfaces of the standard Hoffmann joint were tested at different clamp torques and different rates of load application. No difference in mean slippage values was noted for any interface at similar clamp torques. Joint slippage and any subsequent frame failure are thus not related to rate of load application, but to the magnitude of the load alone.

Equipment Failure↗
PubMed2006

Conversion from external fixation to definitive fixation: periarticular injuries.

Extremity injuries sustained by uniformed service combatants pose a significant challenge to military orthopaedic surgeons. The wounding mechanisms in Operation Iraqi Freedom and Operation Enduring Freedom consist of blasts, penetrating injuries, and blunt injuries. The mortality of warriors has decreased overall because of the improvements in head, neck, and torso body armor. Consequently, the severity of extremity wounds has increased. Because of the far-forward surgical assets (surgeons and advanced equipment), these patients are stabilized rapidly and their injured extremities are treated early (ie, revascularized, débrided, stabilized). However, multiple challenges exist in the timing of definitive reconstructive efforts once these injured service members return to military medical centers in the continental United States.

External Fixators↗
PubMed2001

Treatment of humeral shaft nonunion by external fixation: a valuable option.

We report the treatment of six patients with nonunion of the humerus, using a unilateral fixator and bone grafting. Union was obtained in all patients, with an average time to union of 4.5 months. Superficial pin tract infection was seen in five patients, but resolved uneventfully. One patient had transient radial nerve palsy. The results, according to the Stewart and Hundley criteria, were excellent in one patient, good in three, fair in one, and poor in one. The main cause of the fair and poor results was marked limitation of shoulder and elbow motion. This method, however, seems to be therapeutically effective.

Adult↗
PubMed2001

Advanced textile composite ring for Ilizarov external fixator system.

The use of a radiolucent composite material permits easier and more accurate radiographic evaluation of the bone healing process, and results in a much lighter system. The finite element method (FEM) is employed to determine the worst possible in-service loading condition and the ring dimensions are modified accordingly. Half-ring prototypes are produced using two types of composite materials: knitted aramid fibre fabric reinforced epoxy and random short carbon (RSC) fibre reinforced epoxy. The in-plane compressive strength and axial stiffness of the complete frame are tested according to ASTM specifications. The performance is evaluated, and compared with an existing system in simulated in-service conditions.

Biomechanical Phenomena↗
PubMed2001

Use of the Ilizarov external fixator in the treatment of patients with Ollier's disease.

The authors present the results of treatment of 10 patients with Ollier's disease using the Ilizarov technique. The Ilizarov device was used to treat leg length discrepancy and to enhance the conversion of chondroma cartilage into normal mature bone, with no curettage and bone grafting. The mean duration of treatment was 9.4 months. This technique was highly efficient in treating the disease. It led to conversion of the abnormal cartilage into histologically mature bone in all patients. Some complications were seen, such as decreased knee mobility, which required prolonged use of the device. The Ilizarov technique is successful in treating patients with Ollier's disease despite some complications and the difficulty in using the technique.

Adult↗