Late posterior interosseous nerve palsy associated with loosening of radial head implant

Radial Head Replacement for Acute Complex Fractures: What Are the Rate and Risks Factors for Revision or Removal?

“…Persistent pain can be associated with radiographic loosening [31,43], although our study, along with others, found this to affect a small number of patients when the prostheses are intentionally loose [13,37]. Other noted complications associated with removal of the prosthesis include neuritis, deep infection, or persistent instability (subluxation/dislocation), which were all observed in our series [7,13,18,19,26].…”

Tardy Palsy of Descending Branch of Posterior Interosseous Nerve: Sequela to Plate Osteosynthesis of Forearm Bones

“…(5) The tendon and belly of the extensor pollicis longus and extensor indicis were intact but appeared to be chronically denervated, as the color of these muscles was lighter than in surrounding muscles and the elastic return of these muscles upon pinching was less compared with the surrounding muscles. (6) The PIN proximal to its branches was normal. It was possible to extend the thumb and index finger by applying traction on the tendons of the extensor pollicis longus and extensor indicis.…”

“…It usually involves the whole PIN around the elbow, leading to finger drop with loss of extension of all fingers including the thumb. In the literature, about 12 cases have been reported of tardy PIN palsy, [1][2][3][4][5][6][7][8][9][10][11] but no case involved only its descending branch. Tardy PIN paralysis can be caused by Monteggia fracture, 1-3 radial head fracture, 4 isolated unreduced radial head dislocation, 5 a loose radial head implant, 6 osteomyelitis, 7 biceps tendon repair, 8 cubitus varus deformity, 9 glass injury, 10 and so forth.…”