AI & Digital Health · 4 min read
Precision Medicine in Orthopaedics: Tailoring Treatment to the Individual
The era of treating all patients with the same diagnosis the same way is ending. Precision medicine — the integration of genomic, biological, imaging, and clinical data to tailor treatment to the individual patient's specific disease biology and personal characteristics — is transforming oncology, cardiology, and rheumatology. Its application to orthopaedic surgery is still early, but the direction of travel is clear and the potential for patient benefit is extraordinary.
The concept of precision medicine — treatment decisions based on the individual patient's biological profile rather than population-level averages — has its deepest roots in oncology, where genomic tumour profiling now routinely guides chemotherapy selection. But the precision medicine framework is not limited to cancer: any domain where treatment response varies between patients, where biological heterogeneity within diagnostic categories is clinically significant, and where personalised approaches could improve outcomes compared to uniform management stands to benefit from precision approaches. Orthopaedics meets all of these criteria.
Precision in fracture healing
Fracture healing biology varies significantly between patients — and understanding that variation matters clinically. Genetic polymorphisms affecting vitamin D metabolism, bone turnover markers, and growth factor signalling all influence the rate and quality of fracture healing. Patients with specific biological profiles are at higher risk for delayed union or non-union, and identifying them before surgery rather than discovering it at six weeks creates the opportunity for targeted biological augmentation — bone marrow aspirate, biological grafting, systemic bone health optimisation — that can be applied proactively rather than reactively.
Bone quality assessment beyond simple DEXA scanning — including micro-CT analysis of trabecular architecture and bone strength assessment tools that integrate multiple biological parameters — is beginning to inform surgical decision-making in a more nuanced way than categorical osteoporosis diagnosis allows. The patient whose T-score is at the treatment threshold but whose trabecular architecture is already significantly compromised is at different fracture risk from one with the same T-score but better structural bone quality. Precision assessment reveals that distinction.
Precision in arthroplasty selection
The choice between total shoulder arthroplasty and reverse arthroplasty, between different bearing surfaces in hip replacement, and between different knee arthroplasty designs is currently made predominantly on the basis of clinical and imaging characteristics. Incorporating patient-specific biological parameters — rotator cuff muscle quality assessed by MRI fatty infiltration scoring, bone density at the implant fixation site, and patient-specific biomechanical modelling of load distribution through different implant configurations — into the arthroplasty decision framework is the direction in which precision orthopaedics is moving.
Precision medicine in orthopaedics does not mean more tests for every patient. It means the right tests, for the patients where the results will change the decision — and the decisions that follow from those tests, made with individual rather than average evidence.
The data infrastructure that precision orthopaedics requires — longitudinal biobanks linked to clinical outcome data, genomic databases with musculoskeletal phenotyping, and imaging repositories with quantitative analysis capabilities — is being built across several international research consortia. The pace of development is accelerating, and the clinical applications that emerge from this infrastructure will, within the next decade, begin to change how orthopaedic treatment decisions are made.
💬 What patient-specific biological factors already influence your surgical decision-making — and what precision medicine capability do you most wish you had available in your clinical practice right now?