knuckle joint

• Unión mecánica que conecta dos barras o piezas permitiendo movimiento en un plano, empleada a menudo en ingeniería y maquinaria; también una articulación formada por el extremo de un hueso que encaja con otro, como en los dedos.

A mechanical joint that connects two rods or parts, allowing movement in one plane, often used in machinery and engineering.

1. Anatomical jointB2formal

   A joint in the finger where the bones meet, allowing bending and straightening.

   articulación interfalángica

   • He injured his knuckle joint while playing basketball.
   • The doctor examined the swelling around her knuckle joint.
   • Arthritis often affects the knuckle joints in older adults.

2. Mechanical jointC1formal

   A type of hinge joint used in machinery to connect two parts, allowing movement in one direction.

   articulación de rótula

   • The engineer designed a knuckle joint for the robotic arm.
   • This knuckle joint provides flexibility in the conveyor system.
   • The machine's knuckle joint needs regular lubrication.