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Results for “FRACTURE FIXATION”

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At least 1,063 records · Page 59Linked to original sources
PubMed1982

Ender nail fixation for intertrochanteric fracture.

Fifty patients were treated with Ender nails for intertrochanteric hip fractures. The simplicity of the operative technique, the early bone healing and the low morbidity and mortality rates makes this the most suitable method for patients with stable fractures, and for all critically ill patients.

Bone Nails↗
PubMed1988

Internal stabilization after external fixation of fractures of the shaft of the tibia: sense or nonsense?

A series of 95 patients with fresh fractures of the shaft of the tibia, treated primarily with a Vidal-Adrey transfixation frame, was studied retrospectively. Only 20 fractures (21.0 per cent) attained clinical and radiological consolidation within 4 months after injury. Pseudoarthrosis was seen in 12 patients (12.9 per cent). The external fixator was attached for an average time of 25.0 weeks. Pin loosening was seen in seven patients (7.3 per cent), minor pin track infection in nine (9.4 per cent) and major pin track infection in three (3.1 per cent). In 31 patients (32.6 per cent) a second operative procedure was necessary to accelerate fracture healing. In 17 patients an autologous bone graft was carried out with the external fixator in place. Internal stabilization was performed after removal of the external fixator frame in 14 cases, at an average time of 9.4 months after injury. In difficult fractures we feel that change from external to internal fixation should be performed earlier; it makes early removal of the fixator pins possible and prevents the problems associated with prolonged use of fixator frames. The internal fixation, eventually combined with a transplantation of cancellous autografts, creates a mechanical and biological stimulus for bone consolidation. Functional recovery may also be improved because of a shorter healing time.

Adolescent↗
PubMed2001

Loads acting in an intramedullary nail during fracture healing in the human femur.

The form and function of the musculo-skeletal system is closely related to the forces acting in its components. Significant forces are present in the long bones, but their magnitudes have so far only been estimated from mathematical models. Fracture fixation by means of metal implants provides an opportunity to measure the implant-born forces and to estimate the long bone forces before healing occurs. The load changes during fracture healing may provide additional information. Therefore, a telemetrized, interlocking femoral nail for wireless transmission of forces and moments acting across the fracture site was developed. The design was based on the geometry and material of a 16 mm AO nail with a circular, closed cross-section allowing full protection of the electronic circuits from the body fluids. After careful testing, it was implanted in a 33-year-old patient who had sustained a multifragmentary fracture of the left femur. Measurements at a rate of approx. 0.4 Hz were performed in different patient postures between the 2nd and 26th postoperative week. Significant axial forces and bending moments were measured during several activities such as sitting, unsupported leg elevation and partial weight bearing in a standing position. Forces orthogonal to the nail axis remained small. The reductions of the implant loads due to fracture consolidation were in the order of 50%. Dynamization of the nail did not change the forces. Even though the telemetry system did not allow for dynamic measurements and the results presented here provide data from one subject only, the new information will be useful with respect to implant design, biomechanics of fracture fixation and evaluation of healing progression.

Adult↗
PubMed1994

[Stress shielding and fracture healing].

The influence of stress shielding after fracture fixation with plate on fracture healing was studied. The results of animal and biomechanical experiments as well as the clinical observations demonstrated that rigidity of the plate was not the only factor causing stress redistribution and stress shielding effects of bone. Either the internal fixation with different implants or external fixation with fixators all might lead to physical and chemical characteristic changes of bone tissue. In the early stage, the disturbance of blood supply and the bone structure remodeling may be the main reasons. Reaction to the implant was another cause in the middle stage. If the affected limb can take weight-bearing normally at late stage, the influences of plate on fracture healing mechanical properties of bone and the osteoporosis cause by stress shielding effects will become much less. The tissue of the affected limb was the most important factor which may cause osteoporosis and refracture. Osteoporosis, bone atrophy and immobilization syndrome of bone and joint can be prevented and treated by taking normal weight-bearing and overcoming infection and implant reaction.

Animals↗
PubMed1992

Plaster cast versus Clyburn external fixation for fractures of the distal radius in patients under 45 years of age.

In this prospective study, 70 patients between the ages of 20 and 45 years with comminuted intra-articular fractures of the distal radius of types III to VIII (graded according to Frykman) were treated either by closed reduction and forearm plaster (35 patients) or by application of a Clyburn dynamic external fixator (35 patients). The external fixator was more effective at holding the manipulated position, and the roentgenographic loss of position during fracture union was minimal compared with that seen in patients treated in plaster. Functional results in the fixator group were 18 excellent, 10 good, 6 fair, and 1 poor. The plaster group showed the following functional results: 12 excellent, 8 good, 10 fair, and 5 poor. The external fixator generated significantly better anatomical and functional results than did treatment with forearm plaster. A good anatomic position combined with early rehabilitation of the wrist function produced very favorable functional results in patients less than 45 years of age.

Adult↗
PubMed1989

Kirschner wire migration from the pelvis to the heart and a new method of fixation of articular fracture fragments, acetabular reconstruction.

Fixation of comminuted, articular fracture fragments is frequently difficult. This can be accomplished with Kirschner wires (K-wires), but the risk of migration of smooth K-wires is well known. A case of migration of such a wire from the acetabulum, through the great vessels, and into the heart is presented. The Herbert screw is designed to be "buried" and, thus, allows firm fixation and congruent reduction of overlying fragments. The variation in thread pitch between the two ends of the Herbert screw should prevent migration once the screw is seated. A use of the Herbert screw in the fixation of articular fracture fragments in acetabular reconstruction is presented.

Acetabulum↗
PubMed2000

Bioabsorbable plates and screws: Current state of the art in facial fracture repair.

BACKGROUND AND OBJECTIVES: The use of bioabsorbable materials in craniomaxillofacial surgery began a new era in fracture fixation. The purpose of this paper is to review the historical perspectives and the current concept of bioresorbable materials in fracture fixation. METHODS AND MATERIALS: The authors review the biochemistry and clinical characteristics of bioabsorbable polymers--polylactic acid (PLA), polyglycolic acid (PGA), polydioxanone (PDS), and their copolymers. Their use and clinical perspectives by the Helsinki (authors') group and other study groups are presented. RESULTS AND CONCLUSIONS: These materials have proven to be safe in clinical applications. When manufactured with current technology, they are easy to handle. Economically, they are nearly equal to similar metal devices. The materials have met clinical success throughout the world, first in orthognathic surgery, followed by treatment of fractures of the upper facial skeleton and the mandible. Today, most maxillofacial fractures and osteotomies may be adequately fixed with bioabsorbable materials.

Absorbable Implants↗
PubMed1992

[Evaluation and treatment principles of open fractures].

The evaluation and treatment of fractures with severe soft tissue involvement requires much experience and knowledge in the handling of the soft parts and in the technique of operative fracture fixation. The mechanism of injury correlates with the energy involved, which in-turn must influence our plan of treatment. We tend today to preceed in different steps that must be planned ahead. Wound debridement and simple fracture stabilization in the first instance, soft tissue coverage in the second phase and definitive fracture fixation in the third. The quicker the patient is given the optimal treatment the better the outcome.

First Aid↗
PubMed2005

Complete exposure of the articular surface for fixation of patellar fractures.

Anterior tension band fixation constructs are among the mainstay of treatment of patella fractures and lead to reliable results with simple transverse fracture patterns. However, comminuted fractures of the patella require much more extensive articular reconstruction than interdigitating two large fragments to achieve a good result. In this report, we describe a technique for exposure, reduction, and stabilization of patella fractures that allows for direct visual reduction of the articular surface. Subsequent devices are applied directly to the bony surfaces of the patella without soft-tissue interposition, which distinguishes it from traditional approaches. This technique may be used to ensure articular surface congruity in simple transverse fractures and may be particularly useful in comminuted fractures when patellar excision would otherwise be considered.

Adult↗