Search results for " nail"

New intramedullary locking nail for olecranon fracture fixation--an in vitro biomechanical comparison with tension band wiring.

2010

The aim of this study was to determine the difference in displacement of a newly designed intramedullary olecranon fracture fixation device compared with multifilament tension band wiring after 4 cycles and 300 cycles of dynamic continuous loading.In eight pairs of fresh-frozen cadaver ulnae, oblique olecranon fractures were created and stabilized using either newly designed intramedullary olecranon nail or multifilament tension band wiring. The specimens were then subjected to continuous dynamic loading (from 25 N to 200 N) using matched pairs of cadaveric upper extremities. The Wilcoxon test was used to determine statistical differences of the displacement in the fracture gap.After 4 cycl…

Volar Fixed-Angle Plating of Distal Radius Fractures

2011

The purpose of this biomechanical study was to determine whether a multidirectional fixed-angle plate with locking screws or with locking pegs in the distal fragment would optimize fixation of Orthopaedic Trauma Association (OTA) type A3 distal radius fractures.Eight pairs of fresh-frozen human distal radii were used. Extra-articular distal radius fractures were created and stabilized with a multidirectional volar fixed-angle plate. The radii were randomized into 2 matched-paired groups. The distal fragment in Group I was stabilized with 7 locking screws. The distal fragment in Group II was fixed with 7 locking pegs. The proximal fragment in both groups was fixed with 3 screws. The specimen…

Dynamic biomechanical analysis of different olecranon fracture fixation devices--tension band wiring versus two intramedullary nail systems: an in-vi…

2007

Abstract Background. The aim of this study was to develop a test-setup with continuous angle alteration to imitate joint motion for the evaluation of 3 different olecranon fracture fixation devices. Methods. Twenty-one fresh cadaver upper extremities underwent olecranon fracture by the means of transverse osteotomy and received 3 different fixation systems. Group 1: Tension band wiring according to Weber. Group 2: XS-nail with 9 holes, all locked with 2 mm threaded K-wires. Group 3: Olecranon Nailing System with 90 mm length, locked with 2.7 mm screws, a variable angle locking hole for the proximal fragment and a proximal locking end cap. The servo-pneumatical test stand worked with a rotat…

Kuntscher nailing of femoral shaft fractures in children and adolescents.

1993

We have reviewed 29 cases of very unstable diaphyseal fractures of the femur in children and adolescents treated by Kuntscher nailing. Follow up was for at least 5 years, and in most cases until after the end of growth. There were no post-operative complications, and the mean overgrowth of the femur was 7.06 mm. There was growth disturbance of the proximal femur in one case, but this did not interfere with function. We believe that Kuntscher nailing is indicated in children and adolescents with unstable high velocity fractures of the femoral shaft.

Humeral nailing revisited.

2008

Unreamed interlocked humeral nailing for stabilisation of acute humeral fractures was introduced a decade ago. Antegrade and retrograde nail insertion are equally popular. The role of nailing as opposed to plating of humeral fractures is the subject of continuous debate. Between 1997 and 2005, 99 acute fractures of the humeral shaft were treated operatively with the unreamed humeral nail (UHN, Synthes) in our Level I Trauma Centre. The mean age of the patients was 63 years. Only eight patients (8.1%) were polytraumatised, nine patients had an open fracture (9.1%), five had a primary radial nerve palsy (5.1%). There were 54 antegrade and 45 retrograde nailings. The procedures were performed …

Retrograde nailing versus locking plate osteosynthesis of proximal humeral fractures: a biomechanical study

2011

Background In locking plate osteosynthesis of proximal humeral fractures, secondary varus malalignment is a specific complication. Retron nails (Tantum AG, Neumunster, Germany), among others, have been designed to improve medial support of the calcar humeri. The aim of our biomechanical study was to examine whether Retron nails provide increased stiffness for axial loads and adequate stiffness for torsional loads when compared with Philos plates (Synthes AG, Umkirch, Germany). Materials and methods Twenty-two fresh-frozen paired humeri were collected. After potting the specimens, intact bones were exposed to sinusoidal axial (10-120 N) and torsional (±2.5 Nm) loading for 8 cycles to calcula…

Weyers acrodental dysostosis in a family.

1984

A four generation family with postaxial polydactyly of hands and feet and dental anomalies is reported. Lower and upper incisors were abnormal in shape and number. Additional findings were prominent ear anthelices, hypoplastic and dysplastic nails and mild shortness of stature. Inheritance was dominant with variable expression. It is proposed that the family presents the syndrome of acrofacial dysostosis described by Weyers in 1952. To differentiate it from other acrofacial dysostoses, we suggest naming the condition acrodental dysostosis.

Comments to the paper "do we really need new medical information about the Turin Shroud?".

2015

Abstract Following the interesting arguments raised in a recent letter to the editor, about a paper recently published in this journal, the authors are happy to take a cue from them to clarify some facts that have not been sufficiently treated for space. After a description of the methods used, arguments regarding a blunt trauma on the right shoulder with consequent dislocation, the position of the hands on the pubis with brachial plexus injury, and the wrist nailing that caused retracted thumbs are discussed in detail.

Iekšējās kontroles sistēmas novērtējums un pilnveidošanas iespējas, ņemot vērā ISO sertifikācijas prasības, SIA “Kinetics Nail Systems”

2017

SIA ‘’Kinetics Nail Systems’’ 2017.gadā jāatjauno ISO sertifikāti, kas nozīmē iekšējās kontroles sistēmas pārvērtēšanu. Diplomdarba mērķis: pamatojoties uz SIA ‘’Kinetics Nail Systems’’ iekšējās kontroles sistēmas izpēti, izstrādāt priekšlikumus uzņēmuma iekšējās kontroles sistēmas pilnveidošanai, ņemot vērā ISO sertifikācijas prasības. Uzdevumi: izpētīt iekšējās kontroles teorētisko bāzi, izpētīt ISO sertifikācijas prasības, raksturot uzņēmuma saimniecisko darbību, analizēt iekšējās kontroles sistēmu, novērtēt trūkumus un izstrādāt priekšlikumus, ņemot vērā ISO sertifikāciju. Darba izstrādes rezultātā secināts: uzņēmumā izstrādāta iekšējās kontroles sistēma ar trūkumiem, ISO standarti ievē…

Green nail syndrome

2014