肾虚腰痛者，精气不足，足少阴气衰也。足少阴者，肾之精也。其脉贯脊属肾，抵腰中
，精
气不足，则经脉虚而痛。其症形羸气少，行立不支，而卧息少可，无甚大痛，而悠悠戚戚，
屡发不已。经云∶腰者肾之腑，转摇不能，肾将惫矣，此之谓也。丹溪云∶肾虚者，其脉大
。
《本事》麋茸丸
麋茸（鹿茸亦可） 菟丝子（制，各一两） 舶茴香（五钱）
上为末，以羊肾二对，陈酒煮烂去膜，研如泥，和丸桐子大，阴干。如羊肾少太干，以
酒糊佐之，每服三五十丸，温酒或盐汤下。
青娥丸
破故纸（四两，炒香） 杜仲（净，八两，姜汁炒） 胡桃肉（十两）
上为末，酒糊丸梧子大，每三五十丸，空心温酒送下，蜜丸亦可。《百一》补髓丹有
鹿茸二两，没药一两。
无比山药丸
赤石脂（ ） 茯苓（去皮木） 山茱萸（去核） 巴戟（去心） 牛膝（酒浸） 熟干地黄（酒
浸）
泽泻（各三两） 菟丝（酒浸） 杜仲（去皮，切，姜汁炒） 山药（各三两） 五味子（六两） 肉
苁蓉（酒浸，四两）
蜜丸梧子大，每服三十丸，空心温酒，或盐汤下。
余治一姓顾妇女，患肾虚腰痛，用猪腰二枚，破开纲盐水炒杜仲末缝好，煮熟去药，任
意服之而愈。
Lumbago due to Kidney Deficiency arises from the insufficiency of Essence and Qi, leading to the decline of Qi in the Foot-Shaoyin (Kidney) Meridian. The Foot-Shaoyin is the pathway of the Essence stored by the Kidneys. Its meridian passes through the spine, connects with the Kidneys, and reaches the waist region. When Essence and Qi are insufficient, the meridians become empty and painful. The symptoms include emaciation of the body, shortness of breath, inability to stand or walk steadily, and slight relief when lying down and resting. The pain is not severe but rather lingering and aching, recurring frequently without ceasing. The Classics state: "The loins are the mansion of the Kidneys; if one cannot turn or sway, the Kidneys are about to fail." This refers to this condition. Zhu Danxi stated: "In cases of Kidney Deficiency, the pulse is large."
Mijun Wan (Deer Antler Pill) from *Fangshu Fang*:
Milujun (Elk Antler, can be replaced with Lurong/Deer Antler), 1 liang; Tusizi (Cuscutae Semen, processed), 1 liang; Bo Huixiang (Foeniculi Fructus), 5 qian.
Grind the above ingredients into powder. Take two pairs of sheep kidneys, boil them thoroughly in aged wine, remove the membranes, and grind into a paste. Mix with the powder to form pills the size of tung tree seeds, and dry them in the shade. If there are too few sheep kidneys and the mixture is too dry, add wine paste as a binder. Take 30-50 pills per dose, administered with warm wine or salted water decoction.
Qing'e Wan (Green Elm Pill):
Poguzhi (Psoraleae Fructus, also known as Buguzhi), 4 liang, stir-fried until fragrant; Duzhong (Eucommiae Cortex), 8 liang, cleaned and stir-fried with ginger juice; Hutaorou (Juglandis Semen), 10 liang.
Grind the above ingredients into powder and make pills using wine paste, sized like walnut seeds. Take 30-50 pills per dose, taken on an empty stomach with warm wine. Honey pills are also acceptable. *Baiyi Xuansheng* mentions Buisui Dan (Marrow-Replenishing Pill), which adds Lurong (Deer Antler), 2 liang, and Moyao (Myrrhae Resina), 1 liang.
Wubi Shanyao Wan (Peerless Yam Pill):
Chishizhi (Halloysit Rubrum), 3 liang; Fuling (Poria), 3 liang (peeled); Shanzhuyu (Corni Fructus), 3 liang (pitted); Bajitian (Morindae Radix), 3 liang (core removed); Niuxi (Achyranthis Bidentatae Radix), soaked in wine, 3 liang; Shudihuang (Rehmanniae Radix Praeparata), soaked in wine, 3 liang; Zexie (Alismatis Rhizoma), 3 liang; Tusizi (Cuscutae Semen), soaked in wine, 3 liang; Duzhong (Eucommiae Cortex), peeled, sliced, stir-fried with ginger juice, 3 liang; Shanyao (Dioscoreae Rhizoma), 3 liang; Wuweizi (Schisandrae Fructus), 6 liang; Rongzhrong (Cynomorii Herba), soaked in wine, 4 liang.
Make pills with honey, sized like walnut seeds. Take 30 pills per dose, on an empty stomach with warm wine or salted water decoction.
I once treated a woman surnamed Gu who suffered from lumbago due to Kidney Deficiency. I used two pig kidneys, slit them open, stuffed them with stir-fried Duzhong (Eucommiae Cortex) powder, sewed them up, boiled them until cooked, removed the medicinal herbs, and allowed her to consume them freely. She recovered.