Alves ruled out of Boro's battle for survival
Middlesbrough's record signing Afonso Alves will not play again this season.
Tests carried out revealed the Brazilian, a £12.7m capture from Heerenveen, fractured a metatarsal during the 3-1 derby defeat at Newcastle and will miss Saturday's home clash with Aston Villa and the final day trip to West Ham.
Alves was hurt in a first-half challenge by Nicky Butt, which cost the midfielder a booking, and was carried off on a stretcher with the score at 1-1.
In addition, captain Emanuel Pogatetz has undergone knee surgery and will also be unavailable for the last two games with the Teessiders' 11-year stay in the top flight under severe threat.