Capsular protrusion of wrist joint

Introduction The saclike protrusion of the wrist is one of the symptoms of the ganglion cyst. The sacral cyst (thecal cyst) is the most common type of mass on the dorsal aspect of the wrist. It can also occur on the joint capsule and tendon sheath in other parts of the body.

Cause

Reasons for the saclike protrusion of the wrist:

(1) Causes of the disease: The cause of the disease is unknown.

(B) the pathogenesis: At present, most people believe that the connective tissue on the joint capsule, ligament and tendon sheath is degeneratively deformed into cysts due to local malnutrition. Some cases are related to trauma. The wall of the sphincter cyst is a dense fibrous connective tissue. There is no lining cell in the wall of the capsule. The capsule is a colorless and transparent capsule mucus. The capsule cavity is mostly single room, but also has multiple rooms. Cysts are closely related to the joint capsule or tendon sheath. Some people think that the cystic cavity is connected to the joint cavity or the tendon sheath synovial cavity. Some people think that the roots are connected and not connected.

an examination

Related inspection

Visual examination of bone and joint and soft tissue CT examination with synovial fluid

Diagnosis of the saclike protrusion of the wrist:

It is characterized by a round shape with no change in the appearance of the skin. It protrudes from the surface of the skin and is pressed by hand. It will feel tough and elastic, just like a rubber ball with a hand.

Wrist ganglion cyst: occurs mostly on the dorsal side of the wrist, a few on the volar side. The best part of the hair is the posterior joint capsule of the wrist of the total extensor tendon, followed by the temporal flexor tendon and the long abductor tendon. The ganglion cyst on the volar side of the wrist is sometimes differentiated from the iliac aneurysm. The radial artery, the cephalic vein, and the superficial branch of the radial nerve should be protected when the cyst is removed. The flexor tendon sheath in the carpal tunnel can also undergo cysts, compressing the median nerve and inducing carpal tunnel syndrome. A small number of ganglion cysts can occur on the distal flexor tendon sheath of the metacarpophalangeal joint. The size of the rice is as hard as cartilage.

Differential diagnosis

Differential diagnosis of saccular protrusions of the wrist:

The wrist joint refers to the joint between the lower arm and the hand. There are two common abnormal changes.

(1) The round soft mass is characterized by being very soft to the touch and can be moved back and forth. The most common is the tendon sheath fibroma.

(2) Nodular prominence is characterized by nodular joints in the joints and affecting the normal motor function of the wrist joint, which is common in periostitis caused by rheumatism or tuberculosis.

It is characterized by a round shape with no change in the appearance of the skin. It protrudes from the surface of the skin and is pressed by hand. It will feel tough and elastic, just like a rubber ball with a hand.

Wrist ganglion cyst: occurs mostly on the dorsal side of the wrist, a few on the volar side. The best part of the hair is the posterior joint capsule of the wrist of the total extensor tendon, followed by the temporal flexor tendon and the long abductor tendon. The ganglion cyst on the volar side of the wrist is sometimes differentiated from the iliac aneurysm. The radial artery, the cephalic vein, and the superficial branch of the radial nerve should be protected when the cyst is removed. The flexor tendon sheath in the carpal tunnel can also undergo cysts, compressing the median nerve and inducing carpal tunnel syndrome. A small number of ganglion cysts can occur on the distal flexor tendon sheath of the metacarpophalangeal joint. The size of the rice is as hard as cartilage.

The material in this site is intended to be of general informational use and is not intended to constitute medical advice, probable diagnosis, or recommended treatments.