Inward curving of the legs so that the knees touch, causing the feet to be kept further apart. Knockknee is common in toddlers and may be part of normal development. In adults or children, it may be caused by a disease such as rickets that softens the bones; osteoarthritis or rheumatoid arthritis of the knee; or a leg fracture that has not healed correctly. In children, the condition usually disappears by age 10. Knock-knee that persists, or is caused by a disorder, may require osteotomy, in which the tibia (shin) is cut and realigned to straighten the leg. In adults, knee-joint replacement may be needed.
Knock-knee |
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