母指CM関節症

CM joint at the base of her thumb.

母指の付け根のCM関節のところに腫れと痛みがあり来院。拇指CM関節症、放置して進行するとは親指の付け根の骨が外に出っ張ってきます。最初は、物をつまむ、ビンのふたを開ける、タオルを絞る、ドアノブを回すなど、親指を使う動作のときに、母指の付け根に痛みがでます。母指の手前の、手の甲の骨（第1中手骨）と手首の小さい骨（大菱形骨）の間の関節である、CM関節は、母指が他の指と向き合って、つまみ動作ができる大きな動きのある関節です。しかし使い過ぎや老化に伴って、関節軟骨の摩耗が起き易く、軟骨が損傷すると、関節が腫れて、亜脱臼して、母指の付け根が外側にでっぱってきて、指が変形していきます。鍼灸治療としては、疼痛緩和をして、母指を支える筋肉への血行を促進して、損傷している母指CM関節を支えるように改善していきます

She came to our hospital because of swelling and pain at the CM joint at the base of her thumb. Thumb CM arthropathy, if left untreated and allowed to progress, causes the bone at the base of the thumb to protrude outward. At first, pain occurs at the base of the thumb during thumb movements such as picking up an object, opening a bottle lid, wringing a towel, turning a doorknob, and so on. The CM joint, the joint in front of the thumb between the bones of the back of the hand (first metacarpal) and the small bones of the wrist (greater rhomboid), is a joint with large movement that allows the thumb to face the other fingers and make pinching motions. However, with overuse and aging, the articular cartilage wears easily, and when the cartilage is damaged, the joint swells, subluxation occurs, the base of the thumb protrudes outward, and the finger becomes deformed. Acupuncture treatment includes pain relief, and improving blood circulation to the muscles that support the thumb to support the damaged thumb CM joint.