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. 2016 Jul 21;11(7):e0159761. doi: 10.1371/journal.pone.0159761

Fig 4. The representive case who suffered heterotopic ossification of Discover prosthesis postoperatively.

Fig 4

Dynamic flexion-extension lateral radiographs at the final follow-up showing heterotopic ossification (Grade III) at the index level with significant restriction in the range of motion of Discover prothesis.