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The toes are the digits of the foot. They are named "toes" to distinguish them from the fingers of the hand; in common parlance, they are referred to as "foot joints." The number of their bony segments is the same as that of the hand. The round, protruding bone located on the medial side behind the proximal phalanx of the great toe is called one name "He Gu" (Nuclear Bone), another name [text unclear, likely referring to a specific sesamoid or part of the metatarsal], and commonly known as "Gu Gua" (a term for the bunion area). Injuries to the toe bones are mostly similar to those of the tarsal bones (bones of the instep); however, injuries caused by running or hurried movement are more common, and the treatment methods are the same as those for the tarsal bones.

The calcaneus (heel bone) is the bone at the back of the foot. It supports the ends of the [text unclear, likely referring to cuboid and cuneiform bones] above it, with large tendons attached to it. In common speech, this tendon is called "Jiao Luan Jin" (Foot Cramping Tendon). This tendon passes from the calcaneus through the ankle bone to the inside of the calf, extends upward to the middle region, passes through the buttocks to support the lumbar spine up to the vertex of the head, and from the back of the head forward to the eyes. All these areas are reached by this tendon. If an injury occurs due to falling from a horse or being kicked, causing the calcaneus to twist forward and the toes backward, even if the bone is not fractured but the joint spaces are separated, all the tendons from the foot to the lumbar spine will lose their normal tension and state, resulting in curling and pain. It is appropriate to manipulate them back to their original position and treat with herbal medicine, following the methods described previously.

[Note] Zhenggu Zijin Dan (Purple Gold Pill for Orthopedics), Hunyuan Gao (Primordial Paste), Sanyu He Shang Tang (Decoction for Dispersing Stasis and Harmonizing Injury), Haitong Pi Tang (Decoction of Phellodendri Cortex), and Wanling Gao (Ten Thousand Spirits Paste) are all experienced prescriptions commonly used in the imperial medical institutions. Therefore, for the aforementioned conditions, these formulas are frequently cited. However, if a case of trauma is complicated by other diseases, more than just these few herbs may be required. Thus, various formulas recorded by predecessors have been collected in the final volume to demonstrate the principles of syndrome differentiation and treatment, indicating that therapeutic approaches should not be narrow or limited.

The modern specialty of Zhenggu (Orthopedics) corresponds to the ancient category of traumatic injuries. It focuses primarily on blood disorders. One must first differentiate whether there is stasis of blood accumulation or excessive loss of blood, before applying internal treatment methods, so as to avoid errors. Cases where the skin is intact but internal damage exists often involve blood stasis; whereas cases involving broken flesh and wounds often lead to excessive blood loss. The treatment methods for these two scenarios differ. For blood stasis, purgative and resolving methods are suitable; for excessive blood loss, tonifying and promoting circulation methods are suitable. However, if there is little bleeding and no blood stasis, external treatment methods should be employed. Furthermore, one must observe the differences in location (upper/lower), severity (heavy/light), depth (superficial/deep), and the variation in the quantity of Qi and Blood in the meridians. First, remove the blood stasis, harmonize Ying (Nutritive) Qi, and relieve pain, then nourish and regulate Qi and Blood. There will be no failure in efficacy. As for miscellaneous injury syndromes not fully detailed in the previous sections, they are classified and listed in detail below. Students should study them diligently.