American Hip Institute

Cartilage Defects

Cartilage defects may result from an acute traumatic event or chronic degeneration due to overuse of the hips joint. They can become a significant cause of pain in the hip. Left untreated, cartilage defects continue to worsen over time, a process known as arthritis.

Microfracture is an arthroscopic procedure performed to restore injured cartilage. The procedure involves making multiple perforations into the subchondral bone in the areas where cartilage is deficient, which allow stem cells to fill the void formed out of the cartilage defect.

Research shows these stem cells can form new cartilage in the area of the defect. This procedure has been performed on many professional athletes, such as Kobe Bryant, who underwent microfracture of the knee. New developments have allowed arthroscopic microfracture to be successfully performed in the hip.


After undergoing a microfracture, a patient can expect to be on crutches for 8 weeks. This period of non-weight bearing allows for stem cells to stimulate undisturbed cartilage regrowth.


Hip arthroscopy: acetabular microfracture:

Hip arthroscopy: chondral damage – the wave sign:

Hip arthroscopy: full thickness acetabular delaminated cartilage flap and microfracture: