Two cases of femoral trochanteric fractures with backing out of the compression screw alone: Rare InterTAN complications
Background: In our hospital, TRIGEN InterTAN nails are used to treat unstable fractures. InterTAN compression screw is always placed against the nail, which makes medial migration impossible, thereby eliminating the Z effect. However, we encountered two cases of InterTAN failure associated with compression screw backout. Case presentation: An 84-year-old woman presented with a right femoral trochanteric fracture. After internal fixation with an InterTAN short nail, the compression screw was removed during follow-up. A 72-year-old man presented with a left femoral trochanteric fracture. After internal fixation with an InterTAN long nail, the compression screw was backed out and broke. The compression screw was removed and replaced with a new compression screw of the same size after the artificial bone was filled. Conclusion: We encountered two rare backout cases with only compression screws in InterTAN. If backout occurs, the screw may break if it is not immediately replaced.
