Full Breakdown
Hip Replacement Discrepancy Leads to HDC Breach Finding
6/23/2026, 12:00:56 AM
HDC Finds Surgeon Breached Patient Rights
The Health and Disability Commissioner (HDC) released a report concluding that an orthopaedic surgeon violated the Code of Health and Disability Services Consumers’ Rights by failing to disclose a post-operative leg-length discrepancy and by not pursuing timely corrective action, which ultimately required revision hip surgery.
Clinical Background
Total hip replacement can cause leg-length discrepancy, a recognised complication that should be discussed during informed consent and addressed if identified after surgery.
Principal Parties
Key parties include the NZME journalist patient, the original orthopaedic surgeon (who later apologized and completed informed-consent training), Deputy Health and Disability Commissioner Dr Vanessa Caldwell, an independent expert adviser, and two consulting orthopaedic surgeons.
Timeline
The patient received a left hip replacement in 2021, reported a leg-length concern the next day, and an early X-ray showed a 1.06 cm discrepancy. The surgeon recorded a perceived 2 cm difference four months later without further imaging. After a second opinion identified an oversized femoral component, revision surgery was performed. The HDC investigation concluded, finding a breach and requiring the surgeon’s training.
Measurements
Imaging documented a 1.06 cm discrepancy; later specialist estimates ranged 1–3 cm, and the femoral component was described as “prominent” and “proud.”
Official Responses
The surgeon apologized, noting intra-operative leg-length checks seemed satisfactory but admitting the stem may not have seated correctly. Dr Caldwell said the “wait-and-see” approach was inappropriate and that the patient was not offered a risk-benefit discussion. The surgeon completed informed-consent training after the finding.
Criticism
The independent expert adviser said the implant should have been corrected within days before bone integration. Two orthopaedic surgeons argued early revision carries risks and that conservative treatment can be acceptable, showing divergent clinical views.
Conflicting Reports & Gaps
Sources differ on the discrepancy size—1.06 cm on the initial X-ray versus up to 3 cm later. No further imaging was recorded after the first post-op X-ray, leaving a monitoring gap.
Verbatim Quotes
- “her leg still feels 2cm long[er] and it certainly looks like it” — Orthopaedic surgeon (clinical note)
- “He told HDC that, during the operation, he used a leg length device to ensure leg length and offset were appropriate, and the results indicated they were satisfactory,” — Orthopaedic surgeon (statement to HDC)
- “the benefit and risks of further surgery to correct the issue should have been put to [the woman] for consideration because unilaterally deciding to take the ‘wait-and-see’ approach was, in my view, inappropriate and resulted in further pain and discomfort for [her],” she wrote, in finding that the surgeon had breached the Code.” — Dr Vanessa Caldwell, Deputy Health and Disability Commissioner
- “After reviewing the records and X-rays, he said the implanted component was too large and had been left sitting noticeably proud within the femur.” — Independent expert adviser (assessment)
What’s Next
The surgeon has completed training on informed consent following the HDC breach finding.
