stenosing tenosynovitis

What does it mean when your thumb joint locks into a bent position?

1. Introduction When your thumb joint locks into a bent position, it is almost exclusively the result of a condition known as trigger thumb, clinically termed stenosing tenosynovitis. This structural issue occurs when the flexor tendon, which pulls the thumb downward, develops a swollen nodule that becomes mechanically stuck beneath a tough, fibrous sheath at … Read more

Why do my fingers physically lock into a bent place when I first wake up?

1. Introduction Fingers locking into a bent position upon waking is the classic clinical presentation of stenosing tenosynovitis, commonly known as trigger finger. This condition occurs when the flexor tendon and its protective synovial sheath become inflamed and swollen, forming a localized nodule. During the night, natural fluid shifts cause this nodule to expand further. … Read more