What is the primary function of McPhail's needle holder?

The primary function of McPhail's needle holder is to securely grasp and manipulate needles during surgical procedures. This instrument is specifically designed to maintain a firm grip on the needle while allowing the surgeon or veterinary technician to precisely control the placement of sutures during closure of wounds or surgical incisions. The design usually includes a locking mechanism, which ensures stability and prevents accidental release of the needle, allowing for seamless suturing and minimizing the risk of injury.

Other instruments mentioned, such as those used for bone contouring, orthopaedic cutting, and joint retraction, serve entirely different purposes. While they may also be essential in surgical settings, they do not share the primary function and specialized design features of a needle holder like McPhail's.