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Case report highlights recurrent THA instability in a female, suggesting sagittal plane imbalance may worsen outcomes.
Case: We present a case of recurrent total hip arthroplasty (THA) instability in a 63-year-old female with several prior lumbar spine fusions. She underwent multiple revision THAs for peri-prosthetic joint infection (PJI), peri-prosthetic fracture, and recurrent instability- she ultimately required a constrained liner for definitive treatment. Conclusion Instability following THA may be exacerbated by surgical correction of sagittal plane imbalance. Patient counseling, implant selection, component positioning, and pre-operative planning are essential to ensure clinical success.
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Dehghani et al. (2025) studied this question.
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