Where is scabbard synovitis located

summary

A while ago, I changed into scabbard synovitis, which had a great impact on my daily life and made me unable to work hard enough. Many of us may not know the location of scabbard synovitis. Now I will introduce the location of scabbard synovitis.

Where is scabbard synovitis located

First, the tendon sheath is a double-layer sleeve like closed synovial tube, which is the synovial sheath to protect the tendon. It is divided into two layers around the tendon, a cavity between the two layers, namely the synovial cavity, in which there is the synovial fluid of tendon sheath. The inner layer is closely attached to the tendon, and the outer layer is lined in the tendon fiber sheath, which is combined with the bone surface to fix, protect and lubricate the tendon and prevent it from friction or compression.

Second, two tendons pass through the first osteofibrous sheath on the dorsal side of the wrist, namely abductor pollicis longus and extensor pollicis brevis tendons. After passing through the narrow sheath, the two tendons form a certain angle with the sheath and end at the base of the first metacarpal bone and the base of the proximal phalanx of the thumb. When the range of motion of wrist and thumb is large, the flexure angle of tendon increases. For a long time, local synovial inflammation, thickening, tendon thickening, fiber sheath wall thickening, subcutaneous hard nodules appear in the radial styloid process, making the tendon difficult to slide in the sheath, resulting in pain and other symptoms.

Third: the proximal part of the dorsal carpal ligament is lengthened at the radial side, and the short muscle is located at the deep side. In the shallow side, the extensor pollicis brevis and abductor pollicis longus form a certain angle. When the muscles are overactive, the muscles, tendons and the surrounding fascia and peritendinous tissue become congested and edematous. Synovial cellulosic exudation increased, local red, swelling, pain and other symptoms.

matters needing attention

In any case, we need to cure the scabbard synovitis, because it has a great impact on our daily life, and in the long run, our scabbard function may also be greatly affected, so we must treat it in time.