VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
13.
Electrical thresholds for biomechanical response in the ankle to direct stimulation of spinal roots L4, L5, and S1 : implications for intraoperative pedicle screw testing
Bošnjak, Roman ; Dolenc, Vinko V.
Study Design. A comparison of electrical thresholds for biomechanical responsein the ankle and for evoked electromyographic signals from specific leg muscles during intraoperative extradural direct ...stimulation of roots L4, L5, and S1. Objective. To determine whether a biomechanical response in the ankle to direct root stimulation occurs before evoked electromyographic signals and to determine differences in electrical excitability of the roots circumferentially. Summary of Background Data. Stimulus intensities of 1.2 - 5.7 mA are reported to evoke electromyographic response in corresponding muscles to direct stimulation of normal roots. Stimulus intensities of 6-8 mA were suggested to detect bony pedicular compromise by stimulation of a hole ora screw during pedicle instrumentation. Electrical thresholds of three-dimensional torque response in the ankle to direct root stimulation havenot yet been evaluated and compared with thresholds of evoked electromyogram. Methods. Direct monopolar stimulation of the surgically exposed roots L4, L5, and S1 was performed from different sites around the root by a cuff multielectrode. Biomechanical response was measured as an isometric torque in the ankle at each of three orthogonal axes. Compound muscle action potentials (CMAPs) from rootspecific muscles were detected by a pair of surface or wire electrodes. Results: Mean threshold for biomechanical response in the ankle to stimulation of roots L4, L5, and S1 was 0.72 +- 0.39 mA and for CMAP response was 1.09 mA +- 0.36 (N = 13). Thresholds for biomechanical responses were significantly lower than for CMAP responses (P = 0.0004; paired t test). Nerve roots were electrically most excitable on their ventral aspects. Conclusion. (Abstract truncated at 2000 characters.)
Bibliografsko gradivo je bilo uspešno dodano na polico.
Dodajanje bibliografskega gradiva na polico ni uspelo.
Gradivo je že na polici.
Trajna povezava
URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto
Faktor vpliva
Izdaja
Kategorija
Razvrstitev
JCR
SNIP
JCR
SNIP
JCR
SNIP
JCR
SNIP
Izberite knjižnično izkaznico:
Baze podatkov,
v katerih je revija indeksirana
Ime baze podatkov
Področje
Leto
Povezave do osebnih bibliografij avtorjev
Povezave do podatkov o raziskovalcih v sistemu SICRIS
Storitev za pridobivanje naslova trenutno ni dostopna, prosimo, poskusite še enkrat.
S klikom na gumb "V redu" boste potrdili zgoraj izbrano prevzemno mesto in dokončali postopek rezervacije.
S klikom na gumb "V redu" boste potrdili zgoraj izbrano prevzemno mesto in naslov za dostavo ter dokončali postopek rezervacije.
S klikom na gumb "V redu" boste potrdili zgoraj izbrani naslov za dostavo in dokončali postopek rezervacije.
Obvestilo
Trenutno je storitev za avtomatsko prijavo in rezervacijo nedostopna. Gradivo lahko rezervirate sami na portalu Biblos ali ponovno poskusite tukaj kasneje.
Citiranje
Funkcionalnost trenutno ni na voljo. Prosimo, poskusite kasneje.
