Taş Süleyman, Top Hüsamettin
Department of Plastic, Reconstructive and Aesthetic Surgery, Trakya University Faculty of Medicine, Edirne, 22030 Turkey.
Hand (N Y). 2015 Mar;10(1):143-6. doi: 10.1007/s11552-013-9577-7.
Thumb hypoplasia and thenar muscle anomalies are complex congenital conditions that are associated with other congenital anomalies or syndromes. Congenital absence of the opponens pollicis muscle is very rare and is associated with the absence of other muscles.
A 6-year-old male was referred to our clinic with a provisional diagnosis of carpal tunnel syndrome because electromyography findings at the referring hospital were consistent with this diagnosis. He was unable to oppose his thumbs to his other fingers or grasp objects. All physical examination, electromyography, and magnetic resonance imaging findings were consistent with bilateral absence of the opponens pollicis muscle.
The patient underwent bilateral transfer of the extensor indicis proprius tendon. At 1 year after surgery, he had satisfactory thumb opposition on both sides.
Differentiation between congenital muscle anomalies and carpal tunnel syndrome is very important in order to avoid performing unnecessary surgical procedures. We present a case of bilateral congenital absence of the opponens pollicis muscle, which has not previously been reported, and review the literature regarding congenital muscle anomalies of the hand.
拇指发育不全和大鱼际肌异常是复杂的先天性疾病，常与其他先天性异常或综合征相关。先天性拇对掌肌缺如非常罕见，且常伴有其他肌肉缺如。
一名6岁男性因转诊医院的肌电图检查结果符合腕管综合征的诊断，而被转诊至我院。他无法将拇指与其他手指对掌或抓握物体。所有体格检查、肌电图和磁共振成像结果均符合双侧拇对掌肌缺如。
患者接受了双侧示指固有伸肌腱转移术。术后1年，他双侧拇指对掌功能良好。
为避免进行不必要的手术，区分先天性肌肉异常和腕管综合征非常重要。我们报告了一例双侧先天性拇对掌肌缺如的病例，此前未见报道，并回顾了有关手部先天性肌肉异常的文献。
