Analysis of the mechanical response of damaged human cervical spine ligaments

Ana Trajkovski (Avtor), Marija Hribernik (Avtor), Robert Kunc (Avtor), Matej Kranjec (Avtor), Simon Krašna (Avtor)

Povzetek

Background: Cervical spine ligaments that protect the spinal cord and stabilize the spine are frequently injured in motor vehicle collisions and other traumatic situations. These injuries are usually incomplete, and often difficult to notice. The focus of the presented study is placed on analysis of the effect of subfailure load on the mechanical response of the three main cervical spine ligaments: the anterior and the posterior longitudinal ligament and the ligamentum flavum. Methods: A total of 115 samples of human cadaveric ligaments removed within 24–48 h after death have been tested. Uniaxial tension tests along the fiber direction were performed in physiological conditions on a custom designed test equipment. The ligaments were loaded into an expected damage zone at two different subfailure values (based on previously reported reference group of 46 samples), and then reloaded to failure. Findings: The main effect of a high subfailure load has proven to be the toe elongation change. The toe elongation increase is affected by the subfailure load value. While anterior and posterior longitudinal ligament showed similar changes, the smallest subfailure effect was found in ligamentum flavum. Interpretations: The normal physiological region of the cervical spine ligaments mechanical response is modified by a high subfailure load. The observed ligament injury significantly compromises ligament ability to give tensile support within physiological spinal motion.

Ključne besede

spine biomechanics;cervical spine;ligament;injury;subfailure;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	614.8:531:616.75+611.711(045)
COBISS:	14633987
ISSN:	0268-0033
Št. ogledov:	55
Št. prenosov:	30
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	biomehanika hrbtenice;vratna hrbtenica;ligament;poškodba;obremenitev v zoni poškodbe;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 1-9
Zvezek:	ǂVol. ǂ75
Čas izdaje:	2020
DOI:	10.1016/j.clinbiomech.2020.105012
ID:	15786511