Keegan K G, Wilson D J, Wilson D A, Frankeny R L, Loch W E, Smith B
Department of Veterinary Medicine, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA.
Am J Vet Res. 1997 Mar;58(3):218-23.
To determine the effect of local anesthesia of the palmar digital nerves on forelimb kinematics in Quarter Horses with and without navicular disease.
12 adult Quarter Horses; 5 clinically normal (sound) and 7 with navicular disease.
Kinematic measurements were made on adult horses trotting on a treadmill, before and after palmar digital nerve block (PDNB). Twenty-three displacement, joint angle, and temporal gait measurements of the right forelimb and head were made for 5 strides in each horse. Initial (before local anesthesia) right forelimb measurements were obtained after a left forelimb PDNB. Kinematic measurements were compared before and after PDNB of the right forelimb by multiple ANOVA with an alpha = 0.05, adjusted for posthoc comparisons by Bonferroni correction.
In sound horses, the only significant change in kinematic measurements after PDNB nerve block was in the maximum extension of the metacarpophalangeal joint at mid-stance, which was decreased by an angle of 2 degrees. In horses with navicular disease, mean maximum extension of the metacarpophalangeal joint during stance phase and maximum flexion of the carpal joint during swing phase were significantly increased after PDNB. Also, total stance phase, cranial stance phase, and break-over durations were significantly shorter. In horses with navicular disease, differences between minimum head heights during stance phase of each forelimb and total vertical head excursion during a complete stride were significantly smaller after PDNB.
Several kinematic measurements of gait can be used to determine improvement of lameness in horses with navicular disease after PDNB block while trotting on a treadmill.
确定掌侧指神经局部麻醉对患与未患舟状骨病的夸特马前肢运动学的影响。
12匹成年夸特马；5匹临床正常（健康），7匹患有舟状骨病。
在成年马在跑步机上小跑时，于掌侧指神经阻滞（PDNB）前后进行运动学测量。对每匹马的右前肢和头部进行23项位移、关节角度和时间步态测量，共测量5步。在左前肢进行PDNB后获得初始（局部麻醉前）右前肢测量值。通过多因素方差分析比较右前肢PDNB前后的运动学测量值，α = 0.05，并通过Bonferroni校正进行事后比较调整。
在健康马匹中，PDNB神经阻滞后运动学测量中唯一显著变化是在中 stance 时掌指关节的最大伸展，角度减小了2度。在患有舟状骨病的马匹中，PDNB后 stance 期掌指关节的平均最大伸展和摆动期腕关节的最大屈曲显著增加。此外，总 stance 期、颅 stance 期和越过持续时间显著缩短。在患有舟状骨病的马匹中，PDNB后每只前肢 stance 期的最小头部高度与完整步幅中头部总垂直偏移之间的差异显著减小。
几种步态运动学测量可用于确定患有舟状骨病的马匹在跑步机上小跑时PDNB阻滞后腿跛的改善情况。
