Premenstrual knee pain

Introduction In the pre-menstrual period, the hormone levels in women change significantly. If the secretion of estrogen and aldosterone is not coordinated, water and salt can be retained in the body tissues. There is a triangular gap in the human knee joint, which is filled with fat tissue, that is, the fat pad under the armpit. The retention of water and salt makes the fat pad easily swell and compress the nerve endings, causing pain. Longer onset, periodic recurrent episodes, moderate weight and time, bilateral knee pain, often deep pain or knee pain, relieved after rest, increased pain when the knee is fully extended, slightly bent knees disappeared, wearing high heels can ease .

Cause

Premenstrual knee pain is due to the imbalance of estrogen and progesterone in menstruation, the secretion of vasopressin and aldosterone is not coordinated, and there is a triangular gap in the human knee joint, which is filled with adipose tissue, that is, underarm fat pad, water salt The retention causes edema in the knee joint, swelling of the fat pad, compression of the nerve plexus, and pain.

an examination

Related inspection

CT examination of the limbs and joints of the extremities

Pain when walking or stretching the knee a week or so ago, getting better when resting and bending. Longer onset, periodic recurrent episodes, moderate weight and time, bilateral knee pain, often deep pain or knee pain, relieved after rest, increased pain when the knee is fully extended, slightly bent knees disappeared, wearing high heels can ease . If the disease is not treated, the fat pad will become fibrotic with age, and it will easily rub against the surrounding joint bursa, forming bursal effusion or bursitis, and the knee pain will become persistent. Sex, so don't take it lightly.

Differential diagnosis

It is associated with knee collateral ligament injury, infraorbital fat pad injury, and knee joint inflammation.

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