An unambiguous technique for locating the adductor tubercle and using it to identify the joint line

摘要: Abstract Background If the adductor tubercle could be accurately located, it would a useful landmark for identifying joint line during knee arthroplasty. This study aimed to develop an intraoperative technique improve its locating accuracy. Methods Evaluation of bone specimens and cadaveric knees revealed that proximal slope (PSAT) turns from medial surface vertically into superior condyle, which forms distinctive edge. provided ideal unambiguously engaged using tipped instrument. Using PSAT as reference point, we measured distance (the proximal–distal condylar length; PDCL) in eight pairs knees, evaluated inter-observer variability. Next, 120 undergoing total arthroplasty test this normal population. Finally, divided each PDCL by respective anterior–posterior length (APCL) create ratio predict regardless size. Results The intra-class correlation coefficient (ICC) was 0.86 measurements. mean operated 46mm (coefficient variance (CV): percent). PDCL/APCL 0.77 (CV: six high ICC low CV indicated reliable technique. Conclusion is surgical landmark. instrument engagement with may help locate order identify