The short-term effect of porous tantalum implant combined with core decompression in the treatment of adult early osteonecrosis of the femoral head

Objective:To explore the short-term effects of porous tantalum implant combined with core decompression in the treatment of early osteonecrosis of the femoral head(ONFH).Methods:The clinical data of 11 hips treated with porous tantalum implant combined with core decompression from 11 patients with early ONFH were retrospectively analyzed from March 2012 to January 2013,11 hips included stage ⅠB in 1 hip,stage ⅠC in 1 hip,stage ⅡA in 2 hips,stage ⅡB in 6 hips and stage ⅡC in 1 hip.The average preoperative Harris score of all cases was(53.89.7).The clinical effects in all cases were evaluated by the Harris score,imaging examination and femoral head survival rate.Results:The operative time and blood loss of all cases were from 30 to 50 min and from 50 to 100 ml,respectively.All cases were followed up for 12 to 21 months,the mean follow-up time was 15.8 months.Compared with the preoperative score,the postoperative mean Harris score(84.27.3) in all cases significantly increased(P0.01).The collapse of femoral head and joint space narrowing in 1 patient with systemic disease patients with long-term use of hormone was found by X-ray in 9 months after operation,complete femoral head and no flat collapse or aggravating necrosis of femoral head were verified in other patients.Conclusions:The effects of porous tantalum implant combined with core decompression in the treatment of adult early ONFH are good,which can avoid the collapse of ONFH.