Titanium Elastic Nails for Distal Radius-ulna Fractures in Young Dogs

2021 ◽  
Author(s):  
Harmanpreet Singh Sodhi ◽  
Ashwani Kumar ◽  
Arun Anand ◽  
Vandana Sangwan ◽  
Dhiraj Kumar Gupta
Keyword(s):  
Distal Radius ◽  
Bone Fractures ◽  
Weight Bearing ◽  
Medullary Canal ◽  
Long Term Results ◽  
Long Bone ◽  
Uneventful Recovery ◽  
Fractures In Children ◽  
Ulna Fractures ◽  
Elastic Nails

Background: Radius-ulna is the most frequently fractured bone of the pectoral limb in dogs with high predisposition to distal fractures. The smaller size of the distal fragment and open physis restrict the use of rigid fracture fixation techniques in distal fractures of growing dogs. Titanium elastic nails (TENs) are recommended in medical practice to stabilize long bone fractures in children. There is paucity of literature on TENs for the repair of radius-ulna fractures in dogs. Methods: This clinical study enrolled 10 dogs (7 grey hound and one each of Crossbred, Pomerenarian and Siberian Husky) suffering from distal radius-ulna (6 transverse and 4 short oblique) fractures since a mean ± SD duration of 3.40±4.5 days. The mean ± SD age and body weight of the dogs was 12.60±6.45 months and 14.09±6.41 Kg, respectively. All except one fracture was stabilized with two TENs inserted into the medullary canal of radial bone in a normograde manner from distal to proximal end using open cranio-lateral surgical approach. Result: Majority fractures achieved satisfactory reduction (n=8), radiographically. Weight bearing scores on walking increased gradually from day 12 (1.62 ± 1.51) to 45th (2.57±1.51), day 60th (3.75±0.5) and day 90 (4.0±0). Five dogs had uneventful recovery whereas remaining had major (n=2) or minor (n=3) complications. The length of the operated bone was non-significantly lesser as compared to contralateral healthy bone on day 60. Goniometric assessment of carpal joint of operated limb showed restricted range of motion on day 12 that improved to the near normal as contralateral healthy limb on day 60. Long-term results showed full (9) and acceptable (1) functional outcome. In conclusions, the TENs technique is simple and less invasive alternative fixation technique for distal radius-ulna fractures in young and light weighing dogs. As per authors, this is the first report on the use of TENs for the management of radius-ulna fracture in dogs.

scholarly journals The advent of elastic stable intramedullary nailing for the treatment of long bone fractures in skeletally immature patients

2021 ◽  
Vol 27 (4) ◽  
pp. 406-412
Author(s):  
A. Andreacchio ◽  
◽  
F. Alberghina ◽  
F. Canavese ◽  
◽  
...  
Keyword(s):  
Intramedullary Nailing ◽  
Bone Fractures ◽  
Weight Bearing ◽  
Surgical Techniques ◽  
Early Mobilization ◽  
Elastic Stable Intramedullary Nailing ◽  
Long Bone ◽  
Long Bones ◽  
Skeletally Immature ◽  
Fractures In Children

Introduction Management of pediatric long bones fractures is a complex and rapidly evolving field. Traditionally, casting and conservative techniques played a key-role in the management of fractures in skeletally immature patients. However, the surgical approach has evolved steadily over the past four decades or so and increasing evidence has been published supporting the advantages of fixation techniques over conservative methods. The purpose of this narrative review is to outline how innovations in orthopedic surgery have changed the rationale of treating long bones fractures in children and adolescents with focus on surgical techniques, particularly elastic stable intramedullary nailing (ESIN). Material and methods We aimed to describe the main trends in pediatric long bones fractures management and to identify its specificities and difficulties as well as the best standard of care. Results The introduction of ESIN has profoundly influenced the management of pediatric upper and lower extremity fractures. Overall, in comparison to conservative techniques, advantages of ESIN include minimally invasiveness, short hospital stay, primary bone union, early mobilization and progressive weight bearing, and good outcome with low complication rate. Moreover, the flexible nail can be used as a closed reduction tool itself. Conclusions Irrespective of the technique performed, the key-concepts remain 1) the proper understanding of the injury to treat; 2) the identification the main characteristics of the patient; 3) the pros and cons of each technique; and 4) the potential complications.

HEALING PATTERN OF INTERLOCKED INTRAMEDULLARY NAILED HUMERAL SHAFT FRACTURE

2016 ◽  
Vol 19 (04) ◽  
pp. 1650018
Author(s):  
Myung-Sang Moon ◽  
Dong-Hyeon Kim ◽  
Min-Geun Yoon ◽  
Sang-Yup Lee
Keyword(s):  
Bone Fractures ◽  
Weight Bearing ◽  
Shaft Fracture ◽  
Humeral Shaft Fracture ◽  
Humeral Shaft ◽  
Long Bone ◽  
Patients Âgés ◽  
Humeral Shaft Fractures ◽  
Shaft Fractures ◽  
Entry Points

Design: Study on the cases of the united interlocked intramedullary (IM) nailed humeral shaft fractures. Objective: To assess the healing pattern of nailed humeral shaft fracture and to compare it with the results of the other previous authors’ nail-treated large bone fractures. Background data: Based on the relevant previous studies related with healing patterns of the interlocked IM nail-managed humeral shaft fractures, the current age-matched study on the participating callus for union was conceived. The comparative study on the healing patterns between the fractures of non-weight-bearing long bone — the humerus — and other large weight-bearing long bones have never been carried out previously. Materials and methods: Eighty-nine cases of the humeral shaft fractures, fixated with antegrade interlocked IM standard Kuentscher nail were subjected to the study. The patients’ ages ranged from the late teens to 9th decade of life. For the antegrade nailing, two entry points were chosen; conventional entry point in the early series, and rotator cuff interval in the late series. Results: External callus was very rarely formed [12 cases (13.4%)]. It was formed at post-fixation 6.5 weeks on average in cases with unreduced displaced fragment, and proximal interlocking. Radiographic union occurred at post-fixation 17.6 weeks on an average by primary osteonal callus. Conclusion: It was concluded that in most cases union was obtained primarily by the contact or gap healing irrespective of the patients’ ages, and that periosteal participation was very rare or negligible. Use of smaller diameter nail or new development of less rigid IM nail without external nail shape change is thought desirable to induce periosteal callus in early healing stage.

scholarly journals Comparison of Mechanical Stability of Elastic Titanium, Nickel-Titanium, and Stainless Steel Nails Used in the Fixation of Diaphyseal Long Bone Fractures

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2159 ◽  
Author(s):  
Pei-Yuan Lee ◽  
Yen-Nien Chen ◽  
Jin-Jia Hu ◽  
Chih-Han Chang
Keyword(s):  
Stainless Steel ◽  
Mechanical Stability ◽  
Fe Simulation ◽  
Bone Fractures ◽  
Nickel Titanium ◽  
Long Bone ◽  
Bone Modeling ◽  
Long Bone Fractures ◽  
Elastic Nails ◽  
The Difference

Elastic nails made of the nickel-titanium shape memory alloy (Nitinol) have been reported to control bone modeling in animal studies. However, the mechanical stability of the Nitinol nail in the fixation of long bone fractures remains unclear. This study compared mechanical stability among nails made of three materials, namely Nitinol, titanium, and stainless steel, in the fixation of long bone fractures. These three materials had identical shapes (arc length: π/2 and radius: 260 mm). A cylindrical sawbone with a 10-mm gap and fixed with two C-shaped elastic nails was used to examine the stability of the nails. A finite element (FE) model was developed based on the sawbone model. The end cap for elastic nails was not used in the sawbone test but was considered based on a constraint equation in FE simulation. The results of stability tests appeared to depend on the presence or absence of the end cap. In the sawbone test, the titanium nail yielded a higher ultimate force against the applied load than did the stainless steel and Nitinol nails before the gap completely closed; the difference in linear stiffness between the nails was nonsignificant. In FE simulation, the titanium nail produced smaller gap shortening than did stainless steel and Nitinol nails without the end cap; the difference in gap shortening between the nails was minor with the end cap. The titanium elastic nail should be a better choice in managing diaphyseal long bone fractures when the end cap is not used. For Nitinol and stainless steel nails, the end cap should be used to stop the nail from dropping out and to stabilize the fractured bone.

scholarly journals Classification of long bone fractures in children

2017 ◽  
Vol 88 (2) ◽  
pp. 121-122
Author(s):  
Ivan Hvid ◽  
Klaus Parsch
Keyword(s):  
Bone Fractures ◽  
Long Bone ◽  
Long Bone Fractures ◽  
Fractures In Children

scholarly journals Mechanical flexural ex vivo study of osteotomized swine femurs stabilized with two types of polyamide 12 rods

2017 ◽  
Vol 47 (8) ◽  
Author(s):  
Juliana Scarpa da Silveira Almeida ◽  
Débora de Oliveira Garcia ◽  
Renato Camargo Bortholin ◽  
Carlos Amaral Razzino ◽  
Cristiane dos Santos Honsho ◽  
...  
Keyword(s):  
Bone Fractures ◽  
Ex Vivo ◽  
Polymeric Materials ◽  
Fracture Site ◽  
Medullary Canal ◽  
Modulus Of Rupture ◽  
Long Bone ◽  
Bone Implant ◽  
Polyamide 12 ◽  
Implant System

ABSTRACT: Long bone fractures are commonly in surgery routine and several bone imobilization techniques are currently available. Technological progress has enabled to use low cost materials in surgical procedures. Thus, the aim of this study was to evaluate the applicability of polyamide 12 rods, solid and hollow in swine femurs, comparing them through flexion strength. This study had as second aim to fix the locking errors, commom place in interlocking nails, once polyamide 12 allows perforation in any direction by orthopaedic screw. Six groups were used: G1 - eight whole swine femurs; G2 - eight whole swine femurs with drilled medullary canal; G3 - two solid polyamide 12 rods; G4 - two hollow polyamide 12 rods; G5 - eight osteotomized drilled swine femurs with a solid polyamide 12 rod implanted in the medullary canal and locked by four 316L stainless steel screws; and G6 - similar to G5 but using hollow rods instead of solid ones. No significant differences were observed for the modulus of rupture between solid and hollow rods, demonstrating that both rods had similar performances. These results led to the speculation that the addition of other polymers to the hollow rods could increase their strength and thus the bone-implant system. Furthermore, the comparison between G1, G5 and G6 could be analyzed using the finite element method in future. New polymeric materials may be developed based on the data from this study, strengthening the bone-implant system and making possible screws to be placed in any direction, nullifying the detrimental forces on the fracture site.

Nonunion of Long Bone Fractures in Children

1985 ◽  
Vol 5 (2) ◽  
pp. 135-142 ◽  
Author(s):  
Richard P. Lewallen ◽  
Hamlet A. Peterson
Keyword(s):  
Bone Fractures ◽  
Long Bone ◽  
Long Bone Fractures ◽  
Fractures In Children

Long-term results of treatment of closed bone fractures in children

1980 ◽  
Vol 61 (5) ◽  
pp. 57-58
Author(s):  
D. N. Shamsutdinov
Keyword(s):  
Bone Fractures ◽  
Long Term Results ◽  
Long Term Outcomes ◽  
Results Of Treatment ◽  
Fractures In Children ◽  
Closed Fractures

We studied the long-term outcomes of the treatment of closed fractures in the period from 1 to 10 years after the injury in IZ children (boys - 78, girls - 35; age: up to 3 years - 9, from 4 to 7 years - 26, from 8 to 14 years - 68 , from -15 to 16 years-10).

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