Hyung Gyu Cho
Wonkwang University Hospital, South Korea
Title: The effect of Impacted Allogenic Chip Bone Graft usage for non-contained type bone defect in primary or revision TKA
Biography:
Dr. Chun has expertise in knee joint replacement and its supportive surgeries. He was a guest professor in UCLA (1994) and Indiana university medical center (2002~2004). He is a board member of Korean orthopaedic association, was the chairman of Korean knee society, Korean society of sports medicine and Korean society of arthroscopy. He has published various theses on many world-known journals such as Cell, Nature, the Journal of arthroplasty, the American Journal of Sports Medicine and Knee surgery & related research. He works in the orthopaedic department of Wonkwang university hospital, Iksan, Korea, as a chief professor specializing in the knee joint.
Abstract:
We assessed the clinical and radiological results of using chip bone graft in non-contained type bone defect in primary or revision TKA patients.
Methods: We investigated 32 patients (5 males and 27 females) underwent primary or revision TKA from March 2014 to February 2017, with non-contained type of defect. The mean age was 73.1 years. 7 were primary TKA patients, while 25 were revision patients. 8 had chip bone graft used both in the femur and tibia, 9 only in the tibia, and the other 15 only in the femur. Wire-mesh was used in the 9 patients who had chip bone graft used only in the medial side of the tibia. We used KOOS, HSS and WOMAC scores to assess the clinical result, before the surgery and at the last follow-up. In addition, we had follow-up x-ray and CT done for the patients to check the mean bone union period. Also, overall radiologic imaging studies were used for complications such as loosening, osteolysis and lesions with radiolucency.
Results: The Mean follow-up period was 2.7 years (range; 2.1 to 5). The Mean preoperative KOOS was 102.8 (range; 47 to 132), while postoperative was 31.8 (range; 20 to 45). The mean HSS was 13.1 (range; 6 to 35), while postoperative was 35.9 (range; 24 to 64). The mean WOMAC was 82.9 (range; 62 to 92), while postoperative was 22.5 (range; 13 to 30). According to follow-up x-ray and CT, mean bone union period was 10.6 months (range: 10 to 13). There was no radiologic complication such as loosening and osteolysis, and no complication such as infection.
Conclusion: Chip bone graft in primary or revision TKA with non-contained type bone defect showed favorable result for the subject patients. Therefore, we can consider it as one of the effective methods to manage bone defect.