H
Hamstring injury
A hamstring injury involves straining or pulling one of the hamstring muscles — the group of three muscles that run along the back of the thigh.
Hand fracture
A break or crack in one of the bones in the hand is called a metacarpal fracture. A break or crack in one of the bones in the fingers is called a phalangeal fracture.
Heel pain
Plantar fasciitis (PLAN-tur fas-e-I-tis) is one of the most common causes of heel pain. It involves inflammation of a thick band of tissue that runs across the bottom of each foot and connects the heel bone to the toes, known as the plantar fascia.
Hip dysplasia
Hip dysplasia is the medical term for a hip socket that doesn't fully cover the ball portion of the upper thighbone. This allows the hip joint to become partially or completely dislocated.
Hip fracture
A hip fracture is a serious injury, with complications that can be life-threatening. The risk of a hip fracture rises with age.
Hip labral tear
A hip labral tear involves the ring of cartilage (labrum) that follows the outside rim of the hip joint socket. Besides cushioning the hip joint, the labrum acts like a rubber seal or gasket to help hold the ball at the top of the thighbone securely within the hip socket.
I
Idiopathic toe walking
Walking on the toes or the balls of the feet is fairly common in children who are just beginning to walk. This is known as toe walking.
Intermittent claudication
Claudication is pain caused by too little blood flow to muscles during exercise. Most often this pain occurs in the legs after walking at a certain pace and for a certain amount of time — depending on the severity of the condition.