Bowditch M G, Sanderson P, Livesey J P
West Suffolk Hospital, Bury St Edmunds, UK.
J Bone Joint Surg Br. 1996 Mar;78(2):276-9.
We assessed the prevalence of abnormal ankle reflexes in 1074 adult patients attending orthopaedic clinics and related it to age. Those with possible pathological causes of reflex loss were excluded. The absence of one or both reflexes was significantly related to increasing age; all patients under 30 years had both reflexes. Few had absent reflexes between 30 and 40 years, but over 40 years, the proportion with both reflexes absent increased rapidly from 5% (40 to 50 years) to 80% (90 to 100 years). Unilateral absence did not show the same pattern of increase being 3% to 5% at 40 to 60 years and 7% to 10% at over 60 years. Our results suggest that a significant number of 'normal' adults have unilateral absence of an ankle reflex, but this finding is rare enough to be a definite clinical sign, irrespective of age.
我们评估了1074名到骨科门诊就诊的成年患者中异常踝反射的患病率，并将其与年龄相关联。排除了那些存在可能导致反射消失的病理原因的患者。一侧或双侧反射缺失与年龄增长显著相关；所有30岁以下的患者双侧反射均存在。30至40岁之间很少有人反射缺失，但40岁以上，双侧反射均缺失的比例从5%（40至50岁）迅速增至80%（90至100岁）。单侧反射缺失未呈现相同的增长模式，40至60岁时为3%至5%，60岁以上为7%至10%。我们的结果表明，相当数量的“正常”成年人存在单侧踝反射缺失，但这一发现罕见到足以成为明确的临床体征，与年龄无关。
