Sung-Hyun Cho, Chan-Joo Park, Sang-Jae Kim, Kyoung-Geun Lee, Gyu Rim Baek, Min-Shik Chung, Aaron T Hui, Michelle H McGarry, Thay Q Lee, Sungwook Jung, Jaewon Kim, Yang-Soo Kim
BACKGROUND: The utilization of short humeral stems in reverse total shoulder arthroplasty (RTSA) has gained attention in recent times. However, concerns regarding the risk of misalignment during implant insertion are associated with their use. METHODS: Eight fresh-frozen cadaveric shoulders were prepared for dissection and biomechanical testing. A bespoke humeral implant was fabricated to facilitate assessment of neutral, varus, and valgus alignments using a single stem, and 10° was established as the maximum permissible angle for misalignments...
January 17, 2024: Journal of Shoulder and Elbow Surgery