Chondr Health Dictionary

Chondr: From 1 Different Sources


Chondroma

A TUMOUR composed in part of cartilage.... chondroma

Chondrosarcoma

A cancerous growth of cartilage occurring within or on the surface of large bones, causing pain and swelling.

Usually occurring in middle age, the tumour develops slowly from a noncancerous tumour (see chondroma; dyschondroplasia) or from normal bone.

Amputation of the bone above the tumour usually results in a permanent cure.... chondrosarcoma

Chondritis

Inflammation of a cartilage, usually caused by pressure, stress, or injury.

Costochondritis is inflammation affecting the cartilage between the ribs and the sternum (breastbone).... chondritis

Chondro-

A prefix denoting a relationship to cartilage, as in chondrocyte, a cell that produces cartilage.... chondro-

Chondromalacia Patellae

A painful disorder of the knee in which the cartilage behind the patella (kneecap) is damaged.

Adolescents are most commonly affected.

The condition may result from knee injuries or sporting activities in which the knee is bent for long periods.

This action weakens the inner part of the quadriceps muscle (at the front of the thigh) causing the patella to tilt when the knee is straightened and rub against the lower end of the femur.

The cartilage that covers both bones becomes roughened, causing pain and tenderness.

Treatment is with analgesic drugs and exercises to strengthen the thigh muscles.

Rarely, surgery may be needed.... chondromalacia patellae

Chondromatosis

A condition in which multiple noncancerous tumours, called chondromas, arise in the bones, most commonly the bones of the hands and feet.

The tumours consist of cartilage cells and usually cause no symptoms.... chondromatosis

Chondrin

n. a material that resembles gelatin, produced when cartilage is boiled.... chondrin

Chondriosome

n. see mitochondrion.... chondriosome

Chondroblast

n. a cell that produces the matrix of *cartilage.... chondroblast

Chondroblastoma

n. a tumour derived from *chondroblasts, having the appearance of a mass of well-differentiated cartilage.... chondroblastoma

Chondrocalcinosis

n. the appearance of calcific material in joint cartilage, most commonly an incidental finding on X-ray of the knees in elderly patients and usually causing no symptoms. Calcification of cartilage may also be seen at the shoulder and in the fibrocartilage of the wrist. It may be associated with osteoarthritis. It is also seen less commonly in several other disorders, including Wilson’s disease, pseudogout, hyperparathyroidism, hypothyroidism, and haemochromatosis.... chondrocalcinosis

Chondroclast

n. a cell that is concerned with the absorption of cartilage.... chondroclast

Chondrocranium

n. the embryonic skull, which is composed entirely of cartilage and is later replaced by bone. See also meninx.... chondrocranium

Chondrocyte

n. a *cartilage cell, found embedded in the matrix.... chondrocyte

Chondrodermatitis Nodularis Helicis

a fairly common painful nodule on the upper part of the ear. It occurs mainly in middle-aged or elderly men and characteristically prevents the sufferer from sleeping on the affected side; it is readily treated by being cut out.... chondrodermatitis nodularis helicis

Chondrodysplasia

(chondro-osteodystrophy, chondrodystrophy) n. any of various conditions in which there is abnormal cartilage development. It affects long bones and can cause short-limb dwarfism, overgrowth of the epiphysis, or other deformities. One particular form is an autosomal *recessive syndrome most commonly found in Old Order Amish populations. See also achondroplasia.... chondrodysplasia

Chondroitin Sulphate

a mucopolysaccharide that forms an important constituent of cartilage, bone, and other connective tissues. It is composed of glucuronic acid and N-acetyl-D-galactosamine units. Although it is sold as a supplement to help with joint pain, evidence of any benefit is limited.... chondroitin sulphate

Chondromalacia

n. softening, inflammation, and degeneration of cartilage at a joint. Chondromalacia patellae is the most common kind, affecting the undersurface of the kneecap; it results in pain in the front of the knee and grating (*crepitus), which is made worse by kneeling, squatting, and climbing stairs. Treatment includes physiotherapy, ice packs, anti-inflammatory drugs (NSAIDs), weight loss, and avoidance of aggravating factors, such as running and jumping.... chondromalacia

Chondroplasty

n. the refashioning of articular cartilage, commonly performed by shaving areas of worn and unstable cartilage with the aid of an *arthroscope.... chondroplasty



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