Fig. 5From: Trends in knee surgery research in the official journal of the Korean Knee Society during the period 1999–2018: a bibliometric reviewProportion of original articles by category for the first half and the late half. Values (%) indicate the growth rate of each category. APCL anterior or posterior cruciate ligament, AS arthroscopy, HTO high tibial osteotomy, TKA total knee arthroplasty, UKA unicompartmental knee arthroplastyBack to article page