Cartilage-sized lump on the wrist

Introduction The mass of the wrist that is as hard as the cartilage 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

(1) Causes of the disease

The cause of the disease is unknown.

(two) 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

CT examination of bone and joint and soft tissue X-ray lipiodol

1. General symptoms: The ganglion cyst can occur at any age, more common in young and middle-aged, more women than men. The cyst grows slowly, round, and generally does not exceed 2 cm in diameter. There are also sudden discoverers. A few can dissipate on their own, or they can grow again. In some cases, except for local tumors, there is no conscious discomfort, and sometimes mild tenderness. Most cases have local soreness or discomfort that affects activity.

2. Local symptoms: When inspecting, you can touch a round block with smooth shape and clear boundary. The surface skin can be pushed and no adhesion. Most of the cysts have a large tension, the mass is tough, and a few are soft, but all have a sac. The base of the cyst is fixed and there is almost no activity. B-ultrasound can help determine the nature of the mass.

(1) ganglion cyst of the wrist: occurs mostly on the dorsal side of the wrist, and a few are 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.

(2) sacral sheath cysts in the foot and ankle: There are 8 tendon sheaths in the foot and ankle: 3 in front (anterior tendon, long extensor tendon and long extensor tendon), and 3 medial posterior tendon, long flexor tendon and toe Long flexor tendon), 1 lateral (long tibia, short tendon), and 1 posterior (Achilles tendon). It is more common in the sacral sheath of the foot, and it originates from the toe long tendon sheath of the toe of the dorsal artery. The sacral sheath cyst in the fistula can compress the phrenic nerve and is one of the causes of fistula syndrome.

According to the medical history, the general symptoms and local symptoms of clinical manifestations, B-ultrasound examination, generally can establish a diagnosis.

Differential diagnosis

It should be differentiated from other symptoms of the wrist:

1. Long bone stab wrist long bone spur is a phenomenon in which the wrist joint reinforces itself in response to degeneration. Generally speaking, if there is no compression to the nerve, there is no need to worry too much. As the age increases, each person is more or less There will be long bone spurs.

2. The wrist of the pain on the thumb side of the mother's wrist, also known in medicine as "shoulder stenosis tendon bursitis", is a clinically common wrist pain on the thumb side. Ten times as many as men are in women.

3. Patients with swelling of the wrist and limited flexion of the palmar flexion. The wrist is painful and swollen, especially the palmar flexion is limited.

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.