Orthopedics

Joint replacement functional outcome scores

Joint replacement outcomes live and die by validated joint-specific scoring systems, and orthopedic surgeons rely on them constantly to track recovery and justify further intervention. For the hip, the Harris Hip Score and Oxford Hip Score remain the workhorses covering pain, function, range of motion, and deformity before and after arthroplasty. For the knee, the Oxford Knee Score, the Knee Society Score, and KOOS (Knee Injury and Osteoarthritis Outcome Score) each weigh pain and function slightly differently, and surgeons often pick whichever one their department has used historically so outcomes stay comparable over time. Shoulder surgery leans on the ASES Shoulder Score, the Constant Score, and WORC (Western Ontario Rotator Cuff Index) for rotator cuff pathology specifically. None of these scores are perfect on their own, but tracked serially over a patient course, they turn a subjective "how are you feeling" into something that can actually be plotted, audited, and compared against published benchmarks for a given implant or technique.

Osteoporosis and fracture risk with FRAX

Osteoporosis and fracture risk assessment rely on FRAX, which was developed by the WHO Collaborating Centre for Metabolic Bone Diseases at the University of Sheffield. FRAX estimates a patient 10-year probability of a major osteoporotic fracture and of hip fracture specifically, using clinical risk factors such as age, prior fracture, parental hip fracture, glucocorticoid use, rheumatoid arthritis, and alcohol intake with or without a femoral neck BMD value. Because it works even without a DEXA scan on hand, it has become the default screening tool in primary care and endocrinology alike. Treatment thresholds built around FRAX output vary a bit depending on which body you are following. The National Osteoporosis Foundation, the Endocrine Society, and NICE in the UK all set slightly different cutoffs for when pharmacologic therapy is warranted but the underlying calculation is the same across all three, and this section walks through where those thresholds diverge.

Acute trauma imaging decision rules

Acute trauma imaging decisions are where clinical decision rules earn their keep, and the Ottawa rules are about as well-validated as decision rules get anywhere in medicine. The Ottawa Ankle Rules and Ottawa Knee Rules were designed to cut down on unnecessary radiographs in the emergency department without missing clinically significant fractures, and multiple large validation studies have shown sensitivity approaching 100% for fractures that actually need treatment. The Pittsburgh Knee Rules cover similar ground with a slightly different rule set and tend to be more specific at the cost of a bit of sensitivity. In a busy ED, applying these correctly is often the difference between a patient walking out in twenty minutes with reassurance and crutches versus sitting in the imaging queue for an X-ray that was never going to change management.

Fracture classification and management

Fracture management outside the acute ED setting still depends heavily on classification systems that guide both operative decision-making and prognosis. Hip fractures are typically staged by location and displacemenT. For femoral neck fractures, the Garden classification is used, while for intertrochanteric fractures the AO/OTA system is used. This staging drives the choice between internal fixation, hemiarthroplasty, and total hip arthroplasty in the elderly. Distal radius fractures, common after a fall onto an outstretched hand, are assessed for dorsal angulation, radial shortening, and intra-articular extension, all of which push toward operative fixation over cast immobilization once certain thresholds are crossed. The AO/OTA long bone classification is used broadly across trauma surgery to describe fracture pattern and severity in a way that is reproducible between surgeons and institutions, which matters both for surgical planning and for research comparing outcomes across centers.

Sports medicine injury assessment scores

Sports medicine and soft tissue injuries including ACL tears, meniscal tears, rotator cuff tears, lateral epicondylitis, and plantar fasciitis among them rely less on numerical scoring and more on a combination of physical exam maneuvers, MRI grading, and patient-reported outcome measures like the IKDC and Lysholm score for the knee. ACL reconstruction timing and graft choice (autograft vs. allograft, patellar tendon vs. hamstring) are among the more debated areas in the field, and outcomes are tracked using return-to-sport criteria that go beyond simple range of motion to incorporate quadriceps strength symmetry and hop test performance. Meniscal tears get triaged based on tear pattern and location relative to blood supply, since a peripheral tear in the vascularized red zone has a real shot at healing with repair, while a complex tear in the avascular white zone usually ends up as a partial meniscectomy.

Spine pathology classification tools

Spine pathology, including spinal stenosis and scoliosis, is handled with its own set of classification tools. The AO Spine Classification system stages traumatic spinal injuries by morphology, neurologic status, and patient-specific modifiers, and helps decide between conservative management and surgical stabilization. Degenerative spinal stenosis is generally staged by imaging severity (grading of central canal and foraminal narrowing) combined with functional walking tolerance, since imaging severity alone correlates poorly with symptoms. Scoliosis, particularly in the pediatric and adolescent population, is tracked using Cobb angle measurements on standing radiographs, with surgical thresholds generally rising once curves exceed 40 to 50 degrees or show clear progression on serial imaging.

Perioperative VTE risk in orthopedic surgery

Perioperative risk in orthopedic surgery, especially in joint replacement and hip fracture surgery in older patients, is dominated by VTE prophylaxis decisions. Total hip and knee arthroplasty carry a meaningfully elevated risk of deep vein thrombosis and pulmonary embolism without prophylaxis, and AAOS guidelines lay out a risk-stratified approach to choosing between aspirin, low molecular weight heparin, and direct oral anticoagulants depending on patient-specific bleeding and clotting risk factors. Hip fracture surgery in elderly patients adds another layer of complexity, since these patients often carry significant cardiac and pulmonary comorbidity on top of the fracture itself, and early surgical fixation (generally within 24 to 48 hours) has been shown repeatedly to improve mortality compared to delayed intervention.