Interlocking Nails and Minimally Invasive Osteosynthesis

Déjardin, Loïc M.; Guiot, Laurent P.; Pfeil, Dirsko J F von

doi:10.1016/j.cvsm.2012.07.004

Cited by 21 publications

(22 citation statements)

References 39 publications

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“…Biological osteogenesis is a recent concept that involves adequate stabilization of fracture without interfering physiological environment at the site of fracture [ 5 ]. It can be achieved by using C-arm guided closed intramedullary pinning which is a safe and widely practiced procedure [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Feasibility of C-arm guided closed intramedullary pinning for the stabilization of canine long bone fractures

Kaur

Kumar

et al. 2015

Vet World

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Aim:To evaluate the feasibility of C-arm guided closed intramedullary pinning (simple Steinmann and end threaded) techniques for the stabilization of various canine long bone fractures.Materials and Methods:The present study was conducted on 19 dogs with long bone fractures which were stabilized using simple Steinmann (Group I; n=6) and end threaded (Group II; n=13) pinning under C-arm guidance. Signalment, history of trauma, clinical examination, and hematobiochemical findings were recorded at the time of presentation. Radiography of the affected limb was carried out in two views to determine type and site of the fracture. Treatment of all the fractures was attempted using simple Steinman and end threaded pinning under the C-arm guidance. The success and failure of the closed technique were correlated with age, site, and type of fractures.Results:The mean body weight and age of the dogs were 18.53±2.18 kg and 21.58±5.85 months, respectively. Early presented cases at a mean day of 2.84±0.54 were included. Out of 19 cases, it was possible to place implant successfully in 10 cases (success rate 52.63%) only. The remaining 9 cases had serious intraoperative complications like a misdirection of the pin after engaging the proximal fragment (n=3), missing the proximal fragment completely, and formation of the false tract (n=6). The majority of these complications were associated with younger age and proximal or distal third oblique fractures. High success rate of C-arm guided closed pinning was observed in midshaft fractures (75%) and transverse fractures (77.78%) in dogs of more than 1 year of age (77.78%). Simple Steinmann pinning was better feasible in a closed manner with a high success rate (66.70%) but also had implant related complications. Although, C-arm guided end threaded pinning was less (46.15%) successful, slightly tedious and time-consuming but had better implant stability than that of simple intramedullary pinning.Conclusions:From the present study, it was concluded that C-arm guided closed pinning is recommended in transverse and midshaft fractures of the long bones in dogs older than 1 year of age. Furthermore, there is need to improve traction devices for enhancing the success of C-arm guided intramedullary pinning in dogs.

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Section: Introductionmentioning

confidence: 99%

Feasibility of C-arm guided closed intramedullary pinning for the stabilization of canine long bone fractures

Kaur

Kumar

et al. 2015

Vet World

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“…A wide range of orthopedic implants are available for fixing long bone fractures in companion animals, and many of them show adequate results as long as they have been applied correctly and following the mechanical and biological principles for decision-making and approach [1]. Among them, the intramedullary nail (IN) can be highlighted, which stands out mechanically because it is applied to the neutral axis of force (medullar canal of the bone) and presents significant resistance to flexion [2].…”

Section: Introductionmentioning

confidence: 99%

“…INs are considered the implant of choice in many types of fractures in humans [4, 5] and they have been progressively gaining space in medicine of small animals [1, 3], especially in the fixation of diaphyseal fractures of the femur, tibia, and humerus [6]. In spite of the qualities and excellent results reported with the use of IINs in dogs and cats [7], some limitations have been found over time, leading to several modifications and improvements since the first description made by Küntscher in 1940 [8] and in models designed and used in subsequent decades [1, 3, 9 – 11]).…”

Section: Introductionmentioning

confidence: 99%

“…The initially described defect of this model was related to the slack between the nail orifice and the interlocking screws when submitted to compression and torsional force [12, 13]. The lack of a rigid interaction between conventional screws and the holes in the nails creates an unstable environment, predisposing the occurrence of complications [1]. In an attempt to mitigate such risk, systems with rigid interactions between the nail orifice and the screw (angle-stable nail) were developed, which present greater stiffness and resistance than conventional models [1, 10, 11, 14].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the countless and indisputable advantages of the available angle-stable models and their use in juxta-articular fractures [1, 3], there are still some limitations for their use in specific clinical settings or in animals that are too heavy [15]. Improvements in this sense have been observed in IIN systems for use in humans, with an emphasis in multiplanar interlocking nails[16 – 18].…”

Section: Introductionmentioning

confidence: 99%

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Biomechanical evaluation of a novel orthogonal angle-stable interlocking nail in a canine femur model Novel orthogonal angle-stable interlocking nail

Lucena

Minto

Rocha

et al. 2021

Preprint

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Interlockings nails (IN) are orthopedic implants with superior mechanical and, potentially, biological qualities. Despite the countless and indisputable advantages of current angle-stable models, there are still limitations for their use in certain scenarios. The objective of the present study was to describe and biomechanically test a new orthogonal angle-stable intramedullary nail model for veterinary use. The proposed orthogonal angle-stable nail has two 3.8-mm threaded cylindrical holes in each of its portions: in the proximal portion, the holes are 11 mm apart; in the distal portion, the penultimate orifice is positioned at 90 degrees in relation to the last one, with a distance of 5.5 mm between them. The novel orthogonal nail (Group 3 – G3) was evaluated and compared biomechanically with the conventional interlocking nail (Group 1 – G1) and the uniplanar angle-stable nail (Group 2 – G2) by means of destructive torsion and axial compression tests. No statistically significant differences were observed in torsion resistance between the groups in the destructive tests. However, statistical differences were found in stiffness values in the compression tests between the orthogonal (G3) and conventional interlocking (G1) nails (p=0.01) and also between the uniplanar (G2) and interlocking (G1) nails (p=0.001). The new orthogonal nail proved to be biomechanically similar to the uniplanar angle-stable model and superior to the conventional nail . This new arrangement of interlocking screws (orthogonal and closer to each other) potentially enables the fixation of small fragments and at the extremities of long bones in dogs. Nonetheless, further clinical studies are necessary to validate such hypotheses.

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Principles of Fracture Repair

Bleakley

2024

Techniques in Small Animal Soft Tissue, Orthopedic, and Ophthalmic Surgery

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Interlocking Nails and Minimally Invasive Osteosynthesis

Cited by 21 publications

References 39 publications

Feasibility of C-arm guided closed intramedullary pinning for the stabilization of canine long bone fractures

Feasibility of C-arm guided closed intramedullary pinning for the stabilization of canine long bone fractures

Biomechanical evaluation of a novel orthogonal angle-stable interlocking nail in a canine femur model Novel orthogonal angle-stable interlocking nail

Principles of Fracture Repair

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