论曰风脚软者。肾气不足。风湿所乘也。肾主腰脚。若其气不足。则骨髓虚弱。营卫乏
竭。重以风湿内攻。流注于脚。故令膝腕枢纽不用。步履无力也。
治风冷下注。腰脚痿弱。步履无力。萆 丸方
萆 （微炒八两） 牛膝（去苗酒浸切焙四两） 菟丝子（酒浸别捣二两）
上三味。捣罗为细末。炼蜜和丸。梧桐子大。空腹温酒下二十丸。渐加至三十丸。
治风虚脚弱无力。肌瘦不能食。白术丸方
白术 牛膝（去苗酒浸切焙） 巴戟天（去心） 菟丝子（酒浸别捣各一两半） 熟干
地黄（焙三两） 桂（去粗皮一两）
上六味。捣罗为末。炼蜜和丸。梧桐子大。空心晚食前。温酒下二十丸。加至三十丸。
治风冷腰脚痿弱。 痹不仁。附子丸方
附子（炮裂去皮脐二两） 干姜（炮） 黄 （锉各一两）
上三味。捣罗为末。先以牛乳一升二合。慢火煎至六合。入药末慢火再煎。可丸即丸如
梧桐子大。每服空心食前。温酒下二十丸。加至三十丸。日三服。十日后知痛。
治风冷伤中。两足俱软。筋缓不能收摄。或两手不能举浮肿者。牛膝饮方
牛膝（酒浸切焙） 干姜（炮） 乌头（炮裂去皮脐） 草乌头（生用） 赤小豆 黑
豆（炒）
慈菇（一两半）
上一十一味。锉如麻豆。每以药半两。好酒一大碗。定瓷器内同煎。至七分去滓。每日
早晚旋温五分一盏服。渐加至一盏。如觉麻木。即减分数。以知为度。
治风脚软。腰膝疼。行履不得。遍身瘙痒。何首乌丸方
何首乌（大片花纹者细锉莲子大） 牛膝（细锉各一斤）
上二味。以无灰酒五升。浸七宿曝干。木杵臼内。捣罗为末。炼蜜二斤。和为团。以牛
酥涂
午食前再服。
治风脚软。筋骨缓弱。行履不得。附子羌活散方
附子（去皮脐） 槟榔（锉） 芎 羌活（去芦头各一两）
上四味。并生为细散。每服一钱匕。空心日午煎绿豆汤调下。
治风冷流于脚膝。行立不得。海桐皮酒方
海桐皮 五加皮 独活（去芦头） 防风（去叉） 枳壳（去瓤麸炒） 杜仲（去粗皮
炙各一两） 牛膝（去苗） 薏苡仁（各二两） 生地黄（半斤）
上九味。细锉绵裹。以无灰酒二升。春夏浸七日。秋冬二七日。每日空腹温服一大盏日
三。常令酒气不绝。重者不过两剂瘥。
治风脚软。膝腕枢纽不用。乌头丸方
乌头（一斤劈破以冷水浸两宿洗净去脐不去皮用新黑豆一升与乌头同煮自早至夜以豆烂
为度取乌头去皮薄切焙干后与诸药同杵为末其豆亦同焙别杵为末用） 防风（去叉） 白附
子（
芎 白头
星（炮裂各二两） 威灵
蝎（炒一两半）
上一十九味。捣罗为细末。前黑豆末。醋煮面糊。和拌得所。入臼内杵五七百下。丸如
梧桐子大。每日空心温酒或盐汤。下二十丸。
治风脚软。不能行步。透骨丸方
附子（一枚重七钱者面裹炮裂去皮脐） 麒麟竭 白僵蚕（炮） 地龙（白项者炒） 干
蝎
节各一两以上九味同为末） 龙脑（半钱） 麝香（半钱） 丹砂 水银 硝石 甜硝 朴
硝（各一分） 马牙
上一十九味。拌和令匀。又用飞罗面二两。无灰酒二两。煮糊为丸。每一丸重一钱三字
。以布袋盛。挂当风处。年深不妨。若脚手麻软。每服半丸。滴酒研烂。用生姜汁一茶脚。
麝香少许。好酒一盏相和温过。早晚各一服。五日见效。若卒中暗风。取两丸研入生姜汁半
盏。麝香半字。好酒四盏。分温四服。初服如一食久。下第二服。渐见手开。即下第三服。
见遍身汗出。即下第四服。空心日午临卧。各进一服。若口开不能合。不可治。
治冷痹脚膝疼痛。行履不得。巴戟天饮方
巴戟天（去心三两） 五加皮 附子（炮裂去皮脐各二两） 牛膝（切酒浸焙） 石斛
（去根）
上九味。锉如麻豆。每服三钱匕。以水一盏。入生姜一分拍碎。煎取六分。去滓空腹温
服。
治风脚软膝腕枢纽不用。步履不能。木瓜丸方
木瓜（大者一枚切去盖子入 砂半两在内即盖合蒸熟去皮） 附子（炮裂去皮脐） 白
附子
上六味。先以五味捣罗为末。与木瓜同捣成剂。丸如梧桐子大。每日空心盐汤下二十丸
。至三十丸。
治脚膝风。俗名鹤膝风。干蝎丸方
干蝎（头尾全者炒） 桃仁（去皮尖双仁生用） 白附子（炮） 阿魏 桂（去粗皮） 白
芷安息
灰酒二升银器内熬令稠） 漏芦 当归（切焙） 芍药 地骨皮（去土） 威灵仙（去苗土）
羌活（去芦头
上一十五味。同杵为丸。如弹子大。每服一丸。空心暖酒化下。昔有病风注手足指节肿
痛。不可忍者。服之悉愈。
治风痹脚弱急痛。行履不能。巴戟酒方
生巴戟天（去心） 生牛膝（去苗） 生石斛（去根各二两） 蜀椒（去目并闭口炒出
汗） 生
上七味。 咀。如麻豆大。以生绢袋盛。用酒一斗五升浸。每日三度暖服。随性多少旋
添酒。候药味薄即止。
Discussion: The condition known as "Wind-induced Softness of the Legs" (Feng Jiao Ruan) is caused by insufficiency of Kidney Qi, allowing Wind-Dampness pathogens to invade. The Kidneys govern the waist and legs. If Kidney Qi is deficient, the bone marrow becomes weak, and Ying (Nutritive) and Wei (Defensive) Qi become depleted. Furthermore, internal invasion by Wind-Dampness flows into the lower limbs, causing dysfunction of the knee and ankle joints, resulting in weakness when walking.
Formula for Bi Xie Wan (Dioscorea Hypoglauca Pill) to treat Wind-Cold sinking downward, causing flaccidity and weakness of the waist and legs, and inability to walk with strength:
Bi Xie (Dioscoreae Hypoglaucae Rhizoma, lightly stir-fried, 8 liang), Niuxi (Achyranthis Bidentatae Radix, remove sprouts, soak in wine, slice, and bake-dry, 4 liang), Tusizi (Cuscutae Semen, soak in wine and pound separately, 2 liang).
The above three ingredients are pounded and sifted into a fine powder. Honey is refined and used to form pills the size of paulownia seeds. Take 20 pills on an empty stomach with warm wine, gradually increasing to 30 pills.
Formula for Bai Zhu Wan (Atractylodis Macrocephalae Pill) to treat wind-deficiency leading to leg weakness and inability to eat due to emaciation:
Bai Zhu (Atractylodis Macrocephalae Rhizoma), Niuxi (Achyranthis Bidentatae Radix, remove sprouts, soak in wine, slice, and bake-dry), Bajitian (Morindae Officinalis Radix, remove heart), Tusizi (Cuscutae Semen, soak in wine and pound separately, each 1.5 liang), Shu Dihuang (Prepared Rehmanniae Radix, baked-dry, 3 liang), Gui (Cinnamomi Cortex, remove rough bark, 1 liang).
The above six ingredients are pounded and sifted into a fine powder. Honey is refined and used to form pills the size of paulownia seeds. Take on an empty stomach in the morning or before evening meal with warm wine, starting with 20 pills and gradually increasing to 30 pills.
Formula for Fuzi Wan (Aconiti Lateralis Radix Preparata Pill) to treat Wind-Cold causing flaccidity and weakness of the waist and legs, and numbness:
Fuzi (Aconiti Lateralis Radix Preparata, roasted until cracked, remove skin and umbilicus, 2 liang), Gan Jiang (Zingiberis Rhizoma, roasted), Huang Qi (Astragali Membranacei Radix, cut into pieces, each 1 liang).
The above three ingredients are pounded and sifted into a fine powder. First, take one sheng and two he of cow's milk, slowly boil down to six he. Add the medicinal powder and continue boiling slowly over low heat. When ready to form pills, make them the size of paulownia seeds. Take on an empty stomach before meals with warm wine, starting with 20 pills and gradually increasing to 30 pills, three times daily. After ten days, if pain subsides, it indicates efficacy.
Decoction for Niuxi Yin (Achyranthes Decoction) to treat Wind-Cold injuring the middle jiao, causing bilateral leg softness, lax tendons unable to contract, or inability to raise hands accompanied by edema:
Niuxi (Achyranthis Bidentatae Radix, soak in wine, slice, and bake-dry), Gan Jiang (Zingiberis Rhizoma, roasted), Wutou (Aconiti Radix, roasted until cracked, remove skin and umbilicus), Caowutou (Aconiti Kusnezoffii Radix, raw use), Chixiaodou (Vigna Angularis Semen), Heidou (Sojae Semen Nigrum, stir-fried), Cigou (Colocasia Esculentae Corm, each 1.5 liang).
The above eleven ingredients are cut like hemp seeds. For each dose, take half a liang of medicine and one large bowl of good wine. Simmer together in a porcelain vessel until reduced to seven parts, then strain. Warm and drink half a cup in the morning and evening alternately, gradually increasing to one full cup. If numbness is felt, reduce the dosage; stop when comfort is achieved.
Formula for He Shou Wu Wan (Polygoni Multiflori Radix Pill) to treat Wind-induced leg softness, waist and knee pain, difficulty walking, and generalized pruritus:
He Shou Wu (Polygoni Multiflori Radix, select those with large marbled patterns, finely cut to the size of lotus seeds), Niuxi (Achyranthis Bidentatae Radix, finely cut, each 1 jin).
The above two ingredients are soaked in five sheng of non-fermented wine for seven nights, then sun-dried. Pound in a wooden mortar and sift into a fine powder. Use two jin of refined honey to bind into dough balls... (text implies further processing) ...take again before noon meal.
Powder for Fuzi Qianghuo San (Aconite and Notopterygium Powder) to treat Wind-induced leg softness, laxity of sinews and bones, and inability to walk:
Fuzi (Aconiti Lateralis Radix Preparata, remove skin and umbilicus), Binglang (Arecae Semen, cut), Xiong (Ligustici Chuanxiong Rhizoma), Qianghuo (Notopterygii Rhizoma et Radix, remove rhizome head, each 1 liang).
The above four ingredients are used raw, pounded into a fine powder. Take one qian bi per dose. On an empty stomach or at midday, mix with Mung Bean Soup (Phaseoli Radiati Semen Decoctum) and swallow.
Wine for Haitong Pi Jiu (Sapium Sebiferum Bark Wine) to treat Wind-Cold flowing into the legs and knees, causing inability to stand or walk:
Haitongpi (Saposhnikoviae Radix? Note: Usually Sapium sebiferum cortex or similar, here likely referring to a specific bark used for wind-damp), Wujia pi (Acanthopanacis Cortex), Duhuo (Angelicae Pubescentis Radix, remove rhizome head), Fangfeng (Saposhnikoviae Radix, remove forked roots), Zhike (Citri Reticulatae Pericarpium Viride, remove pulp and bran, stir-fried), Duzhong (Eucommiae Cortex, remove rough bark, stir-fried), Niuxi (Achyranthis Bidentatae Radix, remove sprouts), Yiyiren (Coicis Semen, each 2 liang), Sheng Dihuang (Rehmanniae Radix Recens, half jin).
The above nine ingredients are finely cut, wrapped in silk, and soaked in two sheng of non-fermented wine. Soak for seven days in spring and summer, fourteen days in autumn and winter. Take one large cup warm on an empty stomach daily, three times a day. Maintain a continuous mild alcoholic effect. Severe cases may resolve within two doses.
Formula for Wutou Wan (Aconite Pill) to treat Wind-induced leg softness and dysfunction of knee and ankle joints:
Wutou (Aconiti Radix, 1 jin, split and soaked in cold water for two nights, washed, remove umbilicus but keep skin. Boil with one sheng of fresh black soybeans from morning to night until beans are rotten. Remove Aconite, peel, slice thinly, bake-dry. Pound together with other herbs into fine powder. Beans are also baked-dry and pounded separately into fine powder). Fangfeng (Saposhnikoviae Radix, remove forked roots), Baifuzi (Bellewort Rhizome), Xiong (Ligustici Chuanxiong Rhizome), Baitouxing (Typhonii Rhizoma, roasted, each 2 liang), Weilingxian (Pedicularis Resupinatae Herba), Quanxie (Scorpio, stir-fried, 1.5 liang).
The above nineteen ingredients are pounded and sifted into a fine powder. Mix with the previously prepared black bean powder. Use vinegar-boiled wheat flour paste to bind appropriately. Pound in a mortar 500-700 times. Form pills the size of paulownia seeds. Take on an empty stomach daily with warm wine or salt water, 20 pills per dose.
Formula for Tougu Wan (Bone-Penetrating Pill) to treat Wind-induced leg softness and inability to walk:
Fuzi (Aconiti Lateralis Radix Preparata, one piece weighing seven qian, wrapped in flour, roasted until cracked, remove skin and umbilicus), Qilinjie (Dragon's Blood), Baijiangcan (Bombyx Batryticatus, roasted), Dilong (Pheretima, white-necked variety, stir-fried), Ganxie (Scorpio, dried, segments, each 1 liang - total nine ingredients made into powder), Longnao (Borneolum Syntheticum, half qian), Shexiang (Moschus, half qian), Dansha (Cinnabaris), Shuiyin (Hydrargyrum), Xiaoshi (Natrii Sulfas), Tiantiao (Natrii Sulfatis Crystallisati?), Puxiao (Natrii Sulfatis Crystallisati?, each one fen), Mayaxiao (Saltpeter variant?).
The above nineteen ingredients are mixed evenly. Use two liang of sifted flour and two liang of non-fermented wine to cook into a paste for binding. Each pill weighs one qian and three zhu. Store in a cloth bag hung in a ventilated place; long-term storage is acceptable. For numbness and softness of hands and feet, take half a pill, grind with wine, add one tea-foot measure of ginger juice, a little musk, and one cup of good wine. Mix and warm. Take morning and evening, once daily. Efficacy seen in five days. For sudden onset of hidden wind stroke, take two pills, grind with half a cup of ginger juice, half zi of musk, and four cups of good wine. Divide into four warm doses. After the first dose (duration of one meal), take the second dose. As hand opening improves, take the third dose. When whole-body sweating occurs, take the fourth dose. Take on an empty stomach, at midday, and before bed. If the mouth opens and cannot close, it is incurable.
Decoction for Bajitian Yin (Morinda Decoction) to treat Cold-Bi causing pain in legs and knees and inability to walk:
Bajitian (Morindae Officinalis Radix, remove heart, 3 liang), Wujia pi (Acanthopanacis Cortex), Fuzi (Aconiti Lateralis Radix Preparata, roasted until cracked, remove skin and umbilicus, each 2 liang), Niuxi (Achyranthis Bidentatae Radix, slice, soak in wine, bake-dry), Shihu (Dendrobii Caulis, remove roots).
The above nine ingredients are cut like hemp seeds. Take three qian bi per dose. With one cup of water, add one fen of smashed ginger. Boil to obtain six parts, strain, and take warm on an empty stomach.
Formula for Mugua Wan (Chaenomeles Pill) to treat Wind-induced leg softness, dysfunction of knee and ankle joints, and inability to walk:
Mugua (Chaenomelis Fructus, one large fruit, cut off lid, insert Ban Sha [half a liang of sand? Text says 'Sha', likely a typo for a mineral or herb, possibly 'Ban Xia' or similar, but literally 'Sand'], cover, steam until cooked, remove skin), Fuzi (Aconiti Lateralis Radix Preparata, roasted until cracked, remove skin and umbilicus), Baifuzi (Bellewort Rhizome).
(The text mentions "above six ingredients" but lists fewer explicitly in this segment, implying missing items or grouping). First, pound the five ingredients into a fine powder. Mix with Mugua and pound into a paste. Form pills the size of paulownia seeds. Take on an empty stomach daily with salt water, 20 pills, increasing to 30 pills.
Formula for Ganxie Wan (Dried Scorpion Pill) to treat Leg-Knee Wind, commonly known as Crane Knee Wind:
Ganxie (Scorpio, dried, head and tail intact, stir-fried), Taoren (Persicae Semen, remove skin and pointed end, double-kernel raw use), Baifuzi (Bellewort Rhizoma, roasted),awei (Asafoetida), Gui (Cinnamomi Cortex, remove rough bark), Baizhi (Angelicae Dahuricae Radix), Anxi (Styrax, boiled with wine in silver vessel until thick), Loulu (Euphorbiae Humifusae Herba), Danggui (Angelicae Sinensis Radix, slice and bake-dry), Shaoyao (Paeoniae Radix Alba), Digupi (Phellodendri Cortex), Weilingxian (Pedicularis Resupinatae Herba, remove root soil), Qianghuo (Notopterygii Rhizoma et Radix, remove rhizome head).
The above fifteen ingredients are pounded together into pills the size of a bullet. Take one pill per dose, dissolve in warm wine on an empty stomach. Historically, patients suffering from painful swelling of finger and toe joints due to wind pathogen were completely cured by this formula.
Wine for Bajiji Jiu (Morinda Wine) to treat Wind-Bi causing leg weakness, urgency, pain, and inability to walk:
Sheng Bajitian (Raw Morindae Officinalis Radix, remove heart), Sheng Niuxi (Raw Achyranthis Bidentatae Radix, remove sprouts), Sheng Shihu (Raw Dendrobii Caulis, remove roots, each 2 liang), Shujiao (Zanthoxyli Pericarpium, remove eyes and closed ones, stir-fry until oil appears), Sheng... (Text incomplete).
The above seven ingredients are cut like hemp seeds, placed in a raw silk bag, and soaked in one dou five sheng of wine. Warm and drink three times daily. Add wine as needed. Stop when the medicinal flavor becomes weak.