Pathological fracture

Disease Description (Causes and Symptoms)

• Definition: A pathological fracture is a fracture that occurs from a minor impact when the bone itself is weakened (e.g., by a tumor, osteoporosis, or infection), although such a minor trauma would not usually cause a fracture in a healthy person.
• Causes (major): Osteoporosis, bone metastasis (cancer metastasis to the bone), primary bone tumors (e.g., osteosarcoma), osteonecrosis, osteomyelitis (chronic infection), metabolic bone diseases, and others.
• Pathophysiology: When the structural integrity of the bone is damaged by a lesion (increased bone resorption, destruction of the bone matrix, reduced bone formation, etc.) and its resistance to loading decreases, a fracture can occur even with force within the normal range. If a malignant lesion is present, local bone destruction progresses, increasing the risk of fracture.
• Main symptoms: Local pain in the affected area (worsening over time), deformity, swelling, muscle stiffness, limited joint movement, sensory abnormalities (if nerve damage occurs), and crepitus from friction between fracture fragments. In an open fracture, wounds, bleeding, and signs of infection may occur.

Treatment Methods

• Diagnostic approach (essential before treatment): X-ray (basic), CT when necessary (fracture pattern and detailed assessment), MRI (assessment of soft tissue and tumors), bone scan or PET-CT (assessment of metastasis), blood tests (tumor markers and infection indicators), and biopsy when a lesion is suspected. Identifying the cause plays a decisive role in determining the treatment approach.
• Nonsurgical (conservative) treatment:
  • Immobilization after reduction with a cast, splint, brace, or similar device (mainly when alignment is maintained and the fracture is stable, in children, or in patients at high risk for surgery).
  • Pain control (acetaminophen, NSAIDs if necessary, and review of medication-related high-risk factors), edema management, and activity restriction.
• Surgical treatment (recommended in most cases):
  • Internal fixation: Stabilization of the fracture site using an intramedullary nail or metal hardware (plate and screws), etc.
  • External fixation: Used for open fractures, fractures accompanied by infection, comminuted fractures, or cases requiring urgent fixation.
  • Tumor-related treatment: Lesion resection plus reinforcing fixation (orthopedic oncology surgery; in some cases, bone grafting or metal reinforcement), although in some cases only conservative stabilization is performed (for end-stage metastatic lesions).
  • Adjunctive treatment: Antibiotic treatment for infection (in open fractures or contaminated wounds), thromboprophylaxis (step-down thromboprophylaxis), and pain control.
• Treatment of the underlying disease:
  • Osteoporosis: Calcium and vitamin D supplementation, antiresorptive agents (bisphosphonates, denosumab), bone formation stimulators (teriparatide), and others, started at the discretion of the medical team.
  • Malignant tumors/metastasis: Coordinated treatment with medical oncology and radiation oncology (chemotherapy and radiation therapy) is required.
• Rehabilitation and lifestyle management:
  • Initially, strict bed rest and periodic monitoring of neurological and vascular status, followed by physical therapy to restore joint range of motion and strengthen muscles.
  • Weight-bearing instructions are introduced gradually according to the fixation method and the status of bone union.
• Precautions (complication prevention and self-care):
  • Check for the risks of postoperative infection and osteomyelitis, compartment syndrome, nonunion and malunion, nerve and vascular damage, and thrombosis (deep vein thrombosis).
  • Early cleansing, antibiotics, and surgical treatment are essential for open fractures.
  • When osteoporosis is the cause, bone density management and fall prevention are important to prevent recurrent fractures.

Outpatient Visit Checklist (Including Preparation Items, Points to Confirm, and Sample Questions)

• Recommended items to bring:
  • A list of medications currently being taken (including prescription drugs, nonprescription drugs, and supplements), allergy history (medications, latex, etc.), previous medical certificates and surgical records, previous imaging materials (X-ray/CT/MRI, etc.) — if possible, the originals or a CD/USB drive, and recent test results (such as blood tests).
• Symptom record:
  • When the pain began and how it has progressed, pain intensity (0–10), situations that trigger or relieve the pain, recent trauma history (if any), and systemic symptoms such as fever, wounds, or changes in urination or bowel movements.
• Lifestyle and underlying diseases:
  • History of smoking and alcohol use; osteoporosis, cancer, hormonal diseases, and chronic diseases (e.g., kidney or liver disease); and any history of fractures.
• Items to confirm in advance at the outpatient visit:
  • Recent changes in body weight and whether surgery is desired (possible/refusal), and the presence or absence of cardiac or respiratory diseases that increase surgical risk.
• Sample questions (to prepare in advance for the doctor):
  • "What is suspected to be the cause of this fracture?"
  • "What additional tests are needed, such as a biopsy or whole-body imaging?"
  • "Is surgery necessary, or is conservative treatment possible?"

General Sample Questions to Ask the Doctor

• "What do you think is the exact cause of this fracture (osteoporosis, metastasis, etc.)?"
• "What treatment options do you recommend (surgery vs. conservative treatment), and what are the advantages and disadvantages of each?"
• "If I undergo surgery, how long will recovery take, and what restrictions will there be before I can return to daily activities?"
• "What methods are available for pain management, and what are the main side effects of the medications?"
• "What additional treatments or lifestyle changes are needed to reduce the risk of recurrence (refracture)?"

Disease-Specific Sample Questions

• "Could this fracture be related to bone metastasis (cancer-related)? If so, what additional tests should be performed (biopsy, whole-body imaging, etc.)?"
• "If osteoporosis is the cause, which osteoporosis medication should be started, and what precautions should be taken during long-term use of the medication?"