Edward R. Yager,Shaun R. Cronin,Stephen M. Howell,David B. Willard
申请号：
US14809810
公开号：
US20160030053A1
申请日:
2015.07.27
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Methods and instruments for performing a kinematically-aligned total knee arthroplasty (TKA) are disclosed. Goals of the kinematically-aligned TKA can include restoration of (1) the femoral and tibial joint lines to the patients natural joint line, (2) the patients Hip-Knee-Ankle alignment to their constitutional alignment prior to developing osteoarthritis and (3) restoration of the patients natural soft tissue laxity and envelope. A shim block assembly can be used in resecting the distal medial and lateral condyles to account for cartilage wear on the distal condyles from osteoarthritis. The shim block assembly can include a plurality of shims, and each shim can be attachable to or integral with a reference block. At least one of the plurality of shims can have a medial portion with a thickness different from a thickness of a lateral portion of the shim. The shims need not be joined together as a single medial/lateral component but may be independent of one another. A particular shim can be selected for use based on matching the medial and lateral thicknesses with a determined wear of cartilage on the distal medial and lateral condyles.
