An enhanced-functionality prosthetic limb is disclosed, comprising a prosthetic hand or gripping device, and forearm, which may be body-powered or motor-powered, targeted primarily for pediatric use, attachable to the arm stump of a below-elbow, or above-elbow, with the inclusion of a prosthetic elbow, amputee individual, with incorporation of one or more of the following features: expandability in length or size to accommodate child growth or other expandability needs, grasp locking capability, individual finger locking capability, three degree of freedom wrist joint, dynamic tensional rotation control of wrist, dynamic grasp control to allow grasping of irregular objects, extended grasp for gripping larger objects, excessive force breakaway, and algorithms to support by user of care-provider adjustment of the prosthesis.