Biomechanical Comparison of INTERTAN Nail and Gamma3 Nail for Intertrochanteric Fractures

Autor:	Wei Luo, Jingmin Huang, Jianxiong Ma, Xinlong Ma, Jiang Wu, Xin Fu
Rok vydání:	2020
Předmět:	Intertrochanteric fractures Scientific Articles InterTAN nail Stable fracture medicine.medical_treatment Bone Nails 03 medical and health sciences 0302 clinical medicine Axial compression parasitic diseases Humans Medicine Internal fixation Scientific Article Orthopedics and Sports Medicine Unstable fracture Orthodontics 030222 orthopedics integumentary system Hip Fractures business.industry Biomechanical testing equipment and supplies Biomechanical Phenomena Fracture Fixation Intramedullary Equipment Failure Analysis medicine.anatomical_structure Gamma3 nail Nail (anatomy) Axial load Surgery Cyclic test Intertrochanteric fracture business 030217 neurology & neurosurgery
Zdroj:	Orthopaedic Surgery
ISSN:	1757-7861 1757-7853
DOI:	10.1111/os.12853
Popis:	Objective To compare the biomechanical stabilities of Gamma3 nail and INTERTAN nail (ITN) for stable (AO/OTA 31A1.1) and unstable (AO/OTA 31A2.2) femoral intertrochanteric fracture. Methods Twenty‐four synthetic femora were randomly divided into four groups. After internal fixation (Gamma3 nail or ITN) had been implanted, stable and unstable intertrochanteric fracture models were produced. A cyclic testing protocol with increasing loads was performed for both stable and unstable intertrochanteric fracture models, and then torsional test and axial compression failure test were conducted. Stiffness, failure load, torque, and fragment displacement were recorded. Results For stable fracture model: fragment displacement in ITN group were smaller than Gamma3 nail group (Gamma3 nail: 1.66 ± 0.13 mm; ITN: 1.55 ± 0.1 mm); stiffness (Gamma3 nail: 1142.6 ± 161.1 N/mm, ITN: 1159.3 ± 203.5 N/mm, P = 0.872) and failure load (Gamma3 nail: 5715.42 ± 616.34 N, ITN: 5690.27 ± 625.59 N, P = 0. 951) of the two nails were similar after cyclic test; torque of the ITN group was larger than the Gamma3 nail group. For unstable fracture model: fragment displacement in ITN group was significantly smaller than in the Gamma3 nail group when the axial load was larger than 800 N (Gamma3 nail: 3.59 ± 0.19 mm; ITN: 2.93 ± 0.28 mm); ITN group showed a significantly higher failure load than Gamma3 nail group (Gamma3 nail: 2942.77 ± 573.4 N, ITN: 3672.3 ± 790.5 N, P = 0. 011); torque was significantly higher for the ITN group compared to the Gamma3 nail group for three different angles. Conclusions Both ITN and Gamma3 nail can maintain sufficient biomechanical stability for stable intertrochanteric fractures, but ITN was a better choice for unstable intertrochanteric fractures. The biomechanical properties of the Gamma3 nail and the ITN were similar for stable fracture model. The ITN reduced torsional movement of the femoral head and relative movement between fracture fragments in unstable fracture model. Both ITN and Gamma3 nail can be used for stable intertrochanteric fractures. However, ITN was a better choice for unstable intertrochanteric fractures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6b5032217f0b2163e4ae59e2667269f https://doi.org/10.1111/os.12853 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.