Final answer:
A biplanar chevron osteotomy is indicated for the correction of hallux valgus (bunion), which involves two surgical cuts to realign the toe.
Step-by-step explanation:
The indication for a biplanar chevron osteotomy is primarily hallux valgus deformity, which is commonly referred to as a bunion. This surgical procedure is designed to correct the angular deformity of the big toe. In this type of osteotomy, two surgical cuts (biplanar) are made in the metatarsal near the big toe to realign the bone and joint. It allows for multiplanar correction, providing stability and potentially leading to better clinical outcomes compared to traditional single-plane procedures.