Hip distraction, or arthrodiastasis, is a surgical option for end-stage diseases of the hip, such as Legg Calve Perthes disease, avascular necrosis, and end-stage osteoarthritis. The procedure improves mobility, decreases pain, and prevents further wear to avoid a total hip arthroplasty. However, the standard of care procedure requires an external device that uses large pins that are kept for 3-4 months which can be distressing for pediatric patients.

NCH inventors have developed a completely internal hip-spanning device that allows for distraction and articulated hip motion. This device will likely reduce the problems associated with an external device such as infection, procedure failure, and psychosocial concerns.