Ishizawa Akimitsu, Yamasaki Masahiro
Department of Anatomy, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan.
Kaibogaku Zasshi. 2002 Jun;77(2):31-6.
A 69-year-old woman with lumbrical muscles missing in both feet was examined. The 2nd and 3rd lumbrical muscles were absent in the right foot, while the 2nd, 3rd and 4th were missing in the left foot. Bilateral absence of lumbrical muscles is very rare, and present report is the third subsequent to two reported by Wood (1867, 1868). Moreover, this is the first report of bilateral and plural absence of lumbrical muscles. Results of this study and examination of the previous reports reveal that 1. the more laterally the lumbrical muscle is situated, the more often it is absent, and 2. plural absence of the lumbrical muscles occurs in neighboring two or three ones, i.e., the second and the third or the third and fourth in the case of the two muscles absence and the second, the third and the fourth in the case of the three.
对一名69岁双脚蚓状肌缺失的女性进行了检查。右脚的第2和第3蚓状肌缺失，而左脚的第2、第3和第4蚓状肌缺失。双侧蚓状肌缺失非常罕见，本报告是继伍德（1867年、1868年）报道的两例之后的第三例。此外，这是双侧和多处蚓状肌缺失的首例报告。本研究结果以及对既往报告的审视表明：1. 蚓状肌位置越靠外侧，缺失的情况越常见；2. 多处蚓状肌缺失发生在相邻的两或三块肌肉，即两块肌肉缺失时为第2和第3块，或第3和第4块，三块肌肉缺失时为第2、第3和第4块。
