（胫骨之近足而细于股内者也，亦名之为
骨）。〔内廉〕属足太阴脾经（《灵枢》曰∶足太阴之脉，循内踝前廉，上 内，循胫骨后，交出厥阴之前。
《素问》曰∶脾脉软而散，色不泽者，当病足 肿，若水状。又曰∶太阴厥逆， 急挛，心痛引腹）。〔外廉〕
属足阳明胃经（《灵枢》曰∶足阳明之脉，下循胫外廉。所生病者， 外廉、足跗上皆痛。又曰∶病始于足
胫者，先取足阳明而汗出。《素问》曰∶膝痛连 若折，治阳明中俞 。注∶阳明俞 ，三里穴也，在膝下三
寸， 骨外廉，两筋间宛宛中是穴）。
（腓肠也，俗呼为足肚）〔内廉〕属足少阴肾经（《素问》曰∶肾病，内舍腰脊骨髓，外
在溪谷 膝。《灵枢》曰∶身有五部，伏兔一，腓二，腓者 也，背三，五脏之俞四，项五。此五部有痈疽
者死）。〔外廉〕属足太阳膀胱经（《灵枢》曰∶足太阳之脉，循髀外后廉，合 中，以下贯 内。是动则病
如裂。又曰∶足太阳之筋，其别者结于 外。《素问》曰∶三阳为病发寒热，下为痈肿，及为痿厥 。注∶
三阳，谓太阳。 ，酸疼也。又曰∶刺 肠内陷为肿。注∶ 肠之中，足太阳脉也，太阳气泄故为肿）。
属足太阴脾经（《灵枢》曰∶足太阴之脉，循大指内侧白肉际，过核骨后，上内踝前廉。
又曰∶经脉十二者，伏行分肉之间，深而不见。其常见者，足太阴过于内踝之上，无所隐故也。诸脉之浮而常
见者，皆络脉也）。又属足少阴肾经（《灵枢》曰∶足少阴之本，在内踝下上三寸半中。《素问》曰∶刺少阴
于内踝上二 ，春无见血，出血太多，不可复也。全元起曰∶内踝之上，阴交之出，通于膀胱，系于肾。肾为
命门，有以取之，以明吉凶
也。）又属足厥阴肝经。（《灵枢》曰∶足厥阴之脉，循足跗上廉，去内踝一寸，上踝八寸，交出太阴之后。
沈承之曰∶内踝骨中央上至腰，属足厥阴肝经，上踝骨三寸，名三阴交穴。属足三阴脾、肾、肝经之交会。内
前廉，属足太阴脾经；内后廉，属足少阴肾经）。又属阴跷脉、冲脉（《灵枢》曰∶跷脉者，少阴之别，起于
然骨之后，上内踝之上。又曰∶冲脉并少阴之经。下入内踝之后，入足下。《难经》曰∶阴跷脉，起于跟中，
循内踝，上行至咽喉）。
（胫骨是靠近足部且比大腿内侧骨骼更细的骨头，也被称为腓骨）。〔内侧面〕归属于足太阴脾经（《灵枢》记载：足太阴脾经的经脉，沿着内踝前缘上行，经过小腿内侧，沿胫骨后方走行，在厥阴经之前交叉而出。《素问》记载：脾脉软弱散乱、色泽无光泽的，应当患有足肿病，症状像水湿停滞一样。又记载：太阴经气逆乱，会导致腹部拘急挛缩，心痛牵引至腹部）。〔外侧面〕归属于足阳明胃经（《灵枢》记载：足阳明胃经的经脉，向下沿小腿外侧前行。其所发生的疾病，表现为外侧面及足背上方均疼痛。又记载：疾病始于足胫部位的，先取足阳明经穴位治疗以发汗。《素问》记载：膝痛牵连如折断般剧烈，应治疗阳明经的中俞穴。注：阳明中俞穴即足三里穴，位于膝盖下三寸，腓骨外侧面，两筋之间凹陷处即是该穴位）。
（腓肠肌，俗称“小腿肚”）〔内侧面〕归属于足少阴肾经（《素问》记载：肾病，内部影响腰脊骨髓，外部反映在肌肉间隙和小腿部位。《灵枢》记载：身体有五个重要部位，伏兔穴为一，腓肠肌为二，腓肠肌就是腨（shuàn，小腿肚），背部为三，五脏的背俞穴为四，颈部为五。这五个部位若发生痈疽则死亡）。〔外侧面〕归属于足太阳膀胱经（《灵枢》记载：足太阳膀胱经的经脉，沿大腿后外侧下行，汇合于腘窝中，向下贯穿小腿肚。经脉变动所致的疾病，感觉像撕裂一样。又记载：足太阳经筋，其分支结聚于小腿肚外侧。《素问》记载：三阳经发病会引发寒热，下部出现痈肿，以及痿证和厥证。注：三阳指太阳经。酸疼。又记载：针刺小腿肚内部若陷入则为肿胀。注：小腿肚中部是足太阳经脉所在，因太阳经气泄失故导致肿胀）。
〔内踝周围〕归属于足太阴脾经（《灵枢》记载：足太阴脾经的经脉，沿着大脚趾内侧白肉边缘走行，经过核骨后方，上行至内踝前缘。又记载：十二经脉大多潜行于分肉之间，深藏而不可见。其中常见的，是足太阴脾经在内踝上方显露出来，因为此处没有遮蔽物。所有浮露且常可见到的脉络，都是络脉）。又归属于足少阴肾经（《灵枢》记载：足少阴肾经的本部，在内踝下向上三寸半的中点。《素问》记载：刺少阴经穴位在内踝上二寸处，春季不应见血，如果出血过多，就无法恢复了。全元起说：内踝之上，是阴交穴发出的地方，通于膀胱，系属于肾。肾为命门，通过观察此处可以判断吉凶）。又归属于足厥阴肝经（《灵枢》记载：足厥阴肝经的经脉，沿足背前缘上行，距离内踝一寸，上踝八寸处，交出足太阴经之后方。沈承之说：从内踝骨中央向上至腰部，归属于足厥阴肝经；上踝骨三寸处，名为三阴交穴，是足三阴经脾、肾、肝经的交会之处。内踝前侧面，归属于足太阴脾经；内踝后侧面，归属于足少阴肾经）。又归属于阴跷脉、冲脉（《灵枢》记载：跷脉，是足少阴肾经的别支，起于然骨之后，上行至内踝之上。又记载：冲脉并同少阴经行走，向下进入内踝后方，入足底。《难经》记载：阴跷脉，起于脚跟中部，沿内踝上行至咽喉）。
(The tibia is the bone near the foot that is thinner than the inner thigh bone, also known as the fibula). [The medial side] belongs to the Foot-Taiyin Spleen Meridian (Luo-Connecting Vessel) (*Ling Shu* states: The meridian of the Foot-Taiyin Splein runs along the anterior margin of the medial malleolus, ascends along the medial aspect of the leg, follows the posterior border of the tibia, and crosses anterior to the Jueyin meridian. *Su Wen* states: If the spleen pulse is soft and scattered, and the complexion lacks luster, it indicates edema of the feet, resembling water retention. It further states: Inversion of Taiyin qi leads to abdominal cramping and spasm, with heart pain radiating to the abdomen). [The lateral side] belongs to the Foot-Yangming Stomach Meridian (*Ling Shu* states: The meridian of the Foot-Yangming Stomach descends along the lateral margin of the lower leg. Diseases arising from this meridian manifest as pain in the lateral margin and the dorsum of the foot. It further states: For diseases originating in the lower leg, first treat the Yangming meridian to induce sweating. *Su Wen* states: For knee pain that feels like a fracture, treat the Zhongshu acupoint of the Yangming meridian. Note: The Zhongshu acupoint of the Yangming meridian is Zusanli (ST36), located three cun below the knee, on the lateral margin of the tibia, in the depression between the two tendons).
(The gastrocnemius muscle, commonly called the calf) [The medial side] belongs to the Foot-Shaoyin Kidney Meridian (*Su Wen* states: Kidney disease internally affects the lumbar spine and bone marrow, and externally manifests in the muscle valleys and knees. *Ling Shu* states: There are five key areas of the body: Futu (ST37) is one, the gastrocnemius is two, the gastrocnemius being the shuan (calf), the back is three, the Back-Shu points of the five zang organs are four, and the neck is five. Death occurs if carbuncles or sores develop in these five areas). [The lateral side] belongs to the Foot-Taiyang Bladder Meridian (*Ling Shu* states: The meridian of the Foot-Taiyang Bladder runs along the posterior-lateral margin of the thigh, converges in the popliteal fossa, and descends through the gastrocnemius. Pathological changes cause symptoms feeling like tearing. It further states: The sinews of the Foot-Taiyang meridian have branches that knot at the lateral aspect of the calf. *Su Wen* states: Disease of the Three Yang meridians causes chills and fever, carbuncles and swelling in the lower part, as well as flaccidity and cold limbs. Note: Three Yang refers to the Taiyang meridian. Soreness and pain. It further states: Puncturing into the gastrocnemius causing sinking results in swelling. Note: The center of the gastrocnemius is where the Foot-Taiyang meridian resides; because the Qi of the Taiyang meridian leaks out, swelling occurs).
[The area around the medial malleolus] belongs to the Foot-Taiyin Spleen Meridian (*Ling Shu* states: The meridian of the Foot-Taiyin Spleen runs along the medial white-flesh margin of the big toe, passes behind the navicular bone (hegu), and ascends to the anterior margin of the medial malleolus. It further states: The twelve primary meridians mostly run hidden within the intermuscular spaces, deep and invisible. The ones commonly visible are those of the Foot-Taiyin Spleen above the medial malleolus, because there is no concealment there. All meridians that float and are constantly visible are Luo-Connecting vessels). It also belongs to the Foot-Shaoyin Kidney Meridian (*Ling Shu* states: The root of the Foot-Shaoyin Kidney meridian is located three and a half cun above the medial malleolus. *Su Wen* states: When puncturing the Shaoyin meridian at two cun above the medial malleolus, do not draw blood in spring; excessive bleeding cannot be replenished. Quan Yuanqi said: Above the medial malleolus is the exit of Yinjiao, connecting to the Bladder and linking to the Kidney. The Kidney is the Gate of Life; observing this area clarifies auspicious and inauspicious outcomes). It also belongs to the Foot-Jueyin Liver Meridian (*Ling Shu* states: The meridian of the Foot-Jueyin Liver runs along the upper margin of the dorsum of the foot, one cun away from the medial malleolus, ascending eight cun above the ankle, crossing posterior to the Foot-Taiyin meridian. Shen Chengzhi stated: From the center of the medial malleolus bone up to the waist belongs to the Foot-Jueyin Liver Meridian; three cun above the ankle bone is the Sanyinjiao (SP6) acupoint, which is the intersection of the three Yin meridians of the Spleen, Kidney, and Liver. The anterior-medial margin of the medial malleolus belongs to the Foot-Taiyin Spleen Meridian; the posterior-medial margin belongs to the Foot-Shaoyin Kidney Meridian). It also belongs to the Yin Qiao Mai (Yin Heel Vessel) and the Chong Mai (Penetrating Vessel) (*Ling Shu* states: The Qiao vessel is a branch of the Shaoyin, originating behind Ran Gu, and ascending above the medial malleolus. It further states: The Chong meridian travels alongside the Shaoyin meridian, entering posterior to the medial malleolus and going down into the sole of the foot. *Nan Jing* states: The Yin Qiao Mai originates in the middle of the heel, follows the medial malleolus, and ascends to the throat).