Sneakernet - Wikipedia - Thumbs net big long hard
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Thumb arthritis is common with aging and occurs when cartilage wears away from the ends of the bones that form the joint at the base of your thumb — also known as the carpometacarpal (CMC) joint. Thumb arthritis can cause severe pain, swelling, and decreased strength and range of. Hand discomfort from smartphone use is real, but it's not as serious as you might think.