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Stress fractures after total knee arthroplasty
The Journal of Bone and Joint Surgery. American Volume
|March 1, 1980
Summary
Tibia fractures after knee replacement surgery are often caused by component misalignment. Prompt revision surgery for these fractures, alongside prosthesis loosening, ensures satisfactory healing and outcomes.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Total knee arthroplasty (TKA) is a common procedure to address knee joint degeneration.
- Geometric and polycentric designs are utilized in TKA, each with specific biomechanical properties.
Observation:
- A cohort of fifteen patients developed tibia fractures post-TKA.
- These fractures occurred after the implantation of geometric and polycentric TKA components.
- The average follow-up period was 45.1 months.
Findings:
- The primary etiological factors identified for these stress fractures were axial malalignment and incorrect component positioning.
- All fifteen patients presented with prosthesis loosening, necessitating revision arthroplasty.
- Surgical revision performed concurrently with fracture diagnosis did not impede fracture healing.
Implications:
- Proper component alignment and orientation are critical for preventing periprosthetic fractures in TKA.
- Revision arthroplasty is an effective treatment for tibia fractures associated with TKA complications.
- Early intervention through revision surgery supports favorable fracture healing in TKA patients.
