PMC9709190_01
Anteroposterior left hip radiograph of a 57 year old male (Case #1) with acute failure of Stryker Citation TMZF stem 12 years after implantation.
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He was found to have failure of the prosthetic femoral neck (Figure 1).
PMC9709190_02
Anteroposterior pelvis radiograph of a 71 year old male (Case #2) with acute failure of right hip Stryker Citation TMZF stem 14 years after implantation.
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He was found to have failure of the trunnion and was admitted for revision surgery (Figure 2).
Broken neck fragment from Case #2 placed into the femoral head after explantation demonstrating the significant loss of material from the femoral neck.
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Inspection of the implant after removal revealed significant damage to the trunnion prior to fracture with a large amount of material loss (Figures 3 and 4).
Broken neck fragment from Case #2 placed onto the femoral stem after explantation demonstrating the wear pattern leading to failure with the femoral head falling into varus with erosion into the inferior femoral neck.
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Inspection of the implant after removal revealed significant damage to the trunnion prior to fracture with a large amount of material loss (Figures 3 and 4).
PMC9709190_03
Anteroposterior pelvis radiograph of a 65 year old male (Case #3) with acute failure of left hip Stryker Citation TMZF stem 17 years after implantation.
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Radiographs of the left hip revealed catastrophic failure of the femoral implant due to trunnion fracture (Figure 5).