Search results for "Intramedullary rod"

Internal Fixation of Proximal Humeral Fractures: Current Concepts

2003

Fractures of the proximal humerus are an increasingly common type of injury. Mainly elderly patients with osteoporotic bone are affected. Whereas non-displaced and stable fractures are managed successfully with conservative treatment, there is no general agreement on the surgical strategy for displaced and unstable two- to four-part fractures. The clinical outcome is influenced by the fracture type and concomitant injury to the rotator cuff. Extensive surgical manipulation of the soft tissues, non-anatomic and/or unstable fixation as well as technical errors are important contributing factors to poor clinical results. Goals of surgical treatment are to restore anatomy, to achieve fixation t…

Nonreamed flexible locked intramedullary nailing in tibial open fractures

1998

Thirty-nine open unstable tibial shaft fractures were treated with a nonreamed flexible locked intramedullary nail between 1992 and 1995. There were 23 Grade I, 12 Grade II, three Grade IIIA, and one Grade IIIB fractures. The average time of followup assessment was 24 months. The average time to fracture union was 24 weeks. Complications were related in most cases to fractures with highly unstable patterns and extensive soft tissue lesions. There were five (12.5%) delayed unions and one (2.5%) nonunion. Deep infections developed in three (7.7%) patients. One patient required an additional procedure to correct a varus malunion. There were no implant failures. It was concluded that nonreamed …

2014

Currently, antegrade intramedullary nailing and minimally invasive plate osteosynthesis (MIPO) represent the main surgical alternatives in distal tibial fractures. However, neither choice is optimal for all bony and soft tissue injuries. The Retrograde Tibial Nail (RTN) is a small-caliber prototype implant, which is introduced through a 2-cm-long incision at the tip of the medial malleolus with stab incisions sufficient for interlocking. During this project, we investigated the feasibility of retrograde tibial nailing in a cadaver model and conducted biomechanical testing. Anatomical implantations of the RTN were carried out in AO/OTA 43 A1-3 fracture types in three cadaveric lower limbs. B…

Biomechanical evaluation of a new treatment method for distal tibia fractures

2015

Distal tibial fractures are often the result of high-energy impacts combined with excessive soft tissue injury. Treatment options include either open reduction and internal fixation usually as a mi...

Wissenschaftliche Grundlagen der aufgebohrten und unaufgebohrten Marknagelung

2000

A comparative investigation of differences in new bone formation and cortical remodelling after reamed and unreamed nailing was carried out in a standardized animal model. An oblique osteotomy of the tibia was created in 19 sheep, followed by intramedullary nailing. The medullary cavity was reamed ¶in 10 of the animals, while in 9 sheep unreamed nailing was performed. After an observation period of 10 weeks, microradiographical assessment indicated more intensive bone regeneration and better bridging of the osteotomy in the animals with unreamed nailing. In addition, fewer aseptic bone sequestra were identified in the “unreamed” group. Morphometric measurements of the specimens by fluoresce…

Retrograde Nailing of Humeral Shaft Fractures

1998

The use of intramedullary nailing in the upper extremity is still controversial. Those who have experience with antegrade nailing have either great enthusiasm or strong criticism for the procedure. Criticism of the procedure is because of the trauma that can occur to the rotator cuff and possible impingement syndrome, which can occur after antegrade nail insertion. The technique of retrograde nail insertion with the unreamed humeral nail is described in detail. In a series of 190 retrograde nailings performed in a prospective multicenter study, the most frequent intraoperative problems were fissure or avulsion at the entry portal (n = 8; 4.2%) and secondary radial nerve palsy (n = 8; 4.2%).…

Condylar intramedullary intraosseous lipoma : contribution of a new case and review of the literature

2017

Background Lipoma is the most common benign tumour of the human body, being intraosseous involvement very rare. Just 1 to 4% of all cases of lipoma are located in the oral cavity, only 0.1% being intraosseous. The jaw is its most uncommon bone location. Etiology of intraosseous lipoma (IOL) is unknown, although several theories have been proposed. Usually asymptomatic, the symptoms, when present, will depend on its location and size. Its origin may be intraosseous or juxtacortical. A biopsy is essential for diagnosis, and definitive treatment involves resection or curettage of the lesion. The aim of this paper is to present a new case of intramedullary intraosseous lipoma of the mandible wi…

The Retrograde Tibial Nail: presentation and biomechanical evaluation of a new concept in the treatment of distal tibia fractures.

2013

Displaced distal tibia fractures require stable fixation while minimizing secondary damage to the soft tissues by the surgical approach and implants. Antegrade intramedullary nailing has become an alternative to plate osteosynthesis for the treatment of distal metaphyseal fractures over the past two decades. While retrograde intramedullary nailing is a standard procedure in other long bone fractures, only few attempts have been made on retrograde nailing of tibial fractures. The main reasons are difficulties of finding an ideal entry portal and the lack of an ideal implant for retrograde insertion. The Retrograde Tibial Nail (RTN) is a prototype intramedullary implant developed by our group…

Treatment of distal intraarticular tibial fractures: A biomechanical evaluation of intramedullary nailing vs. angle-stable plate osteosynthesis

2015

In factures of the distal tibia with simple articular extension, the optimal surgical treatment remains debatable. In clinical practice, minimally invasive plate osteosynthesis and intramedullary nailing are both routinely performed. Comparative biomechanical studies of different types of osteosynthesis of intraarticular distal tibial fractures are missing due to the lack of an established model. The goal of this study was first to establish a biomechanical model and second to investigate, which are the biomechanical advantages of angle-stable plate osteosynthesis and intramedullary nailing of distal intraarticular tibial fractures. Seven 4(th) generation biomechanical composite tibiae feat…