Boutonniere Deformity
Original Editor - Esraa Mohamed Abdullzaher
Top Contributors - Shreya Pavaskar, Wanda van Niekerk, Adu Omotoyosi Johnson, Esraa Mohamed Abdullzaher, Uchechukwu Chukwuemeka and Kim Jackson
Definition[edit | edit source]
If the central slip of the digital expansion is ruptured, minimal deformity results as long as the transverse fibers of the expansion remain in tact. If they are also torn, a deformity is produced at the PIP joint, which the English-speaking orthopaediccommunity calls the boutonniere deformity whereas the French call it the buttonhole.148 In this case, all extensor force will be transmitted to the distal phalanx by intact lateral bands, producing hyperextension of the DIP joint
