Clinical Scorecard: Evaluating Fracture Risk in Patients with Primary Hyperparathyroidism

At a Glance

Key Highlights

• FRAX tool underestimates major osteoporotic and hip fracture risks in PHPT patients.
• Surgical management reduces fracture incidence when MOF risk >1.2% and hip fracture risk >2.7%.
• Low-trauma fracture at any site (excluding head, hands, feet) is an indication for surgery.

Guideline-Based Recommendations

Diagnosis

• Use dual-energy radiographic densitometry T-score < -2.5 or prior fracture as skeletal criteria for surgery in asymptomatic PHPT patients.
• FRAX risk assessment can supplement fracture risk evaluation but was not previously used for surgical decision thresholds.

Management

• Recommend parathyroidectomy when FRAX MOF risk exceeds 1.2% or hip fracture risk exceeds 2.7%, expanding indications beyond current guidelines.
• Consider patient preference, surgical expertise, and burden of expectant care in management decisions.
• Surgery is indicated for patients with low-trauma fractures regardless of fracture site.

Monitoring & Follow-up

• Monitor fracture risk using FRAX with calibration adjustments specific to PHPT.
• Assess for renal manifestations that may independently indicate surgery.

Risks

• Expectant care may impose long-term burdens and fracture risk remains elevated without surgery.
• Administrative data limitations may affect risk estimations.

Patient & Prescribing Data

Nearly 60,000 patients aged 40-90 years with PHPT from the TriNetX database

Surgical management associated with 11-15% reduction in fracture risk; surgery recommended for approximately 25% more patients using FRAX thresholds compared to current criteria.

Clinical Best Practices

• Incorporate FRAX-based fracture risk assessment alongside densitometry for individualized surgical decision-making.
• Use propensity score matching or similar methods in research to minimize treatment selection bias.
• Communicate risks and benefits clearly with patients considering surgery vs nonsurgical management.
• Recognize that fracture risk factors beyond densitometry exist and adjust assessments accordingly using tools like FRAXplus.
• Consider renal complications of PHPT as independent indications for surgery.

References

• Sant et al. Study on FRAX and fracture risk in PHPT
• Current international PHPT management guidelines
• Danish cohort study on FRAX adjustments in PHPT
• FRAX adjustments in type 2 diabetes
• FRAXplus tool development
• Mortality and refracture risks associated with fractures