This narrative review by Morgan et al. (JAAOS 2005) defines the spectrum of implant constraint in primary TKA — from cruciate-retaining to rotating-hinge — and provides a clinical decision framework for selecting the appropriate constraint level based on deformity severity, ligament status, and patient-specific factors.
This narrative review by Morgan et al. (JAAOS 2005) defines the spectrum of implant constraint in primary TKA — from cruciate-retaining to rotating-hinge — and provides a clinical decision framework for selecting the appropriate constraint level based on deformity severity, ligament status, and patient-specific factors.