腳是身上特別有趣的結構之一
總共包含了26塊骨頭與無數的關節
是一個包含許多生物力學的精巧機構
Foot is one of the most fascinating part of our body,
including 26 bones and multiple joints.
It's a delicate structure that developed with many biomechanics.
想要正確的訓練足部
不能不先認識足底三角(Foot Tripod)
You can't train your foot correctly without knowing what is foot tripod
足底三角包含了三個部分:
Foot Tripod is consisted by 3 parts:
1. 跟骨 Calcaneus
2. 第一蹠骨頭 Head of 1st metatarsal
3. 第五蹠骨頭 Head of 5th metatarsal
整個步態週期過程中
所有的單腳支撐階段
都建立於這三點保持與地面的接觸
During the gait cycle,
all single support phase need to keep the connection of all 3 points and the ground.
如果我們的支撐三角產生變化
就會產生支撐面積的變化
導致足底壓力路線的偏移
If the tripod shape is changed, the base of support will change.
That can lead to center of pressure deviation.
此外, 足底三角結構也與足弓息息相關
如果前足相對於後足內翻(Varus)
為了維持這個三角結構就會有過度旋前(Over Pronation)的現象產生
造成真正的足弓塌陷
同理, 如果前足相對於後足外翻(Valgus)
就會有旋後的動作產生, 造成高足弓的狀態
Moreover, the tripod is related to our arch.
When fore foot varus, the over pronation will occur to keep the tripod structure.
And the arch is collapsed.
On the other hand,
when the fore foot valgus, the supination will occur and result in high arch.
而如果因為跟骨或Chopart線活動受限沒有代償動作時
活動時就會有產生拇趾側或小指側的翻起
三角結構就會隨之破壞
這也是之前在<大拇指如何有效地踩在地上>影片的訓練目標
If the calcaneus and/or Chopart line has limited motion,
the 1st MTP or 5th MTP will leave the ground during movement.
Then the tripod structure is changed.
That's why I took a video about how to have your toe on the ground during movement.
如果沒有維持健康的足底三角結構
就不可能會有正常的足部功能
If you can not maintain the healthy tripod position,
you can never achieved normal foot function/gait.
所有的關節都是動態的
使用外在的力量強迫避免或做出任何動作
反而會導致身體失去該有的經驗與能力
All joints are dynamic.
Using external support to force your foot to prevent or finish any motion,
your body will lose the chance to experience "the healthy motion"
如果有任何足部相關的問題
請尋求專業人員協助評估
If you have any foot problem,
let it be evaluated by qualified professionals.
本著作由I-Chen Liu, PT, MS製作，以創用CC 姓名標示-非商業性-相同方式分享 4.0 國際 授權條款釋出。
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