Bone Alignment Mechanism for Repeatable Hallux Valgus Joint Preparation

The device incorporates adjustable components including a variable angle plate that can be positioned at different angles (0, 15, 30, 45 degrees) relative to the first metatarsal shaft, and a positioning mechanism that allows the second metatarsal to be held at variable distances from the first metatarsal. This dynamic adjustability enables the device to adapt to varying clinical situations while maintaining repeatable surgical procedures through standardized adjustment protocols.

The surgical device serves multiple functions: it acts as a guide for osteotomy cuts, a positioning mechanism for bone alignment, an angular correction tool, and a stabilization device during fixation. This multi-functionality allows a single device to address various clinical scenarios in hallux valgus correction, improving both adaptability and repeatability.

The device performs preliminary alignment and positioning of the first and second metatarsals before the actual osteotomy and fixation procedures. By establishing the correct angular relationship and spatial positioning in advance, the device ensures both precise bone alignment and joint stability during the correction process.

The device acts as an intermediary tool between the surgeon and the bones, providing a mechanical framework that maintains proper alignment and spacing during the surgical procedure. The guide structure and positioning mechanisms serve as intermediaries that transfer and maintain the desired geometric relationships throughout the correction process.