Metacarpal Fracture

Metacarpal Fracture Overview

  • Definition: A metacarpal fracture is a break in one of the five long bones known as metacarpals, found in the palm of the hand.

  • Common Causes:

    • Trauma: Falls, direct blows, or accidents.

    • Mechanisms:

      • Direct Blow or Trauma: Commonly caused by a punch to a hard object (e.g., Boxer's Fracture).

      • Falls or Sports Injuries: Falling onto an outstretched hand or participation in sports (e.g., basketball, hockey).

      • Twisting or Bending: Injuries from twisting movements.

      • Crushing Injuries: Industrial accidents leading to hand fractures.

      • Repetitive Stress: Stress fractures from overuse in activities.

Clinical Features

  • Symptoms:

    • Pain: Localized pain worsening with movement or pressure.

    • Swelling and Bruising: Observable swelling and bruising in the hand area.

    • Deformity: Visible misalignment or abnormal angulation in displaced fractures.

    • Reduced Range of Motion (ROM): Difficulty flexing, extending, or gripping.

    • Tenderness: Tender to touch around the fracture site.

    • Inability to Grasp Objects: Decreased hand strength.

    • Numbness or Tingling: Rare, may suggest nerve involvement requiring urgent attention.

Types of Metacarpal Fractures

  • Boxer’s Fracture: Neck fracture of the 5th metacarpal from punching.

  • Comminuted Fracture: The bone breaks into several pieces, often requiring surgery.

  • Displaced Fracture: Misaligned bone fragments needing reduction.

  • Non-Displaced Fracture: Cracks without misalignment, treated conservatively.

  • Stress Fracture: Hairline fracture resulting from repetitive use.

  • Open Fracture: Bone protrudes through skin; requires urgent treatment.

  • Bennett's Fracture: Fracture-dislocation of the base of the thumb metacarpal.

Physiotherapy Assessment

  • Patient History:

    • Mechanism of injury, time since injury, treatment received, associated injuries, prior chronic conditions.

  • Inspection:

    • Visual signs of swelling, bruising, deformity, infections, and surgical scars.

  • Palpation:

    • Tenderness, bony deformity assessment, signs of nerve involvement.

  • Range of Motion (ROM):

    • Active Range of Motion (AROM): Patient's active movement abilities.

    • Passive Range of Motion (PROM): Therapist-assisted joint movement checks.

  • Strength Testing:

    • Grip strength and finger strength tests using tools like dynamometers.

  • Neurovascular Assessment:

    • Check nerve injury and blood supply, evaluating distal pulses, and sensation.

Rehabilitation Plan

Weeks 1-2: Acute Phase (Protection and Pain Management)

  • Goals:

    • Protect the fracture site, control pain and swelling, prevent stiffness.

  • Focus:

    • Immobilization with splints or casts, rest, ice therapy, gentle passive ROM.

    • Educate on movement avoidance to protect the fracture site.

Weeks 2-4: Early Recovery Phase (Gentle Mobilization and Pain Reduction)

  • Goals:

    • Restore pain-free motion, prevent stiffness.

  • Focus:

    • Initiate active ROM and isometric exercises, manage swelling, and perform gentle soft tissue mobilization.

Weeks 4-6: Mid Recovery Phase (Strengthening and Increased Mobility)

  • Goals:

    • Increase ROM, begin strengthening exercises, reduce swelling.

  • Focus:

    • Continue ROM exercises, introduce strengthening activities, and address scar tissue from surgery.

Weeks 6-8: Late Recovery Phase (Functional Training and Strength Development)

  • Goals:

    • Restore strength, flexibility, functional abilities.

  • Focus:

    • Progress strength exercises, incorporate functional training, dexterity training with small objects.

Weeks 8-12: Full Rehabilitation Phase (Return to Activity)

  • Goals:

    • Achieve full functional recovery.

  • Focus:

    • Advanced strengthening, tailor activities for specific tasks in daily life, build endurance for hand and forearm.

Additional Considerations

  • Splinting/Bracing: Potential need for longer splinting depending on fracture type.

  • Surgical Fractures: Attention to scar mobilization and slower rehabilitation.

  • Work/School Adjustments: Involvement of occupational therapists for adjustments during recovery.

Summary of Key Phases (in weeks)

  1. Weeks 1-2: Protection, pain management, passive movement.

  2. Weeks 2-4: Gentle ROM, isometric strengthening.

  3. Weeks 4-6: Active ROM and strengthening tasks.

  4. Weeks 6-8: Functional rehabilitation and dexterity work.

  5. Weeks 8-12: Full activity restoration and advanced strengthening.

Factors Affecting Rehabilitation Timeline

  • Severity of the fracture: More complex fractures prolong healing.

  • Age and health status: Younger or healthier individuals tend to recover faster.

  • Adherence to treatment: Compliance with physiotherapy is crucial.

  • Complications: Delays from infections or complications can hamper the recovery process.

Metacarpal Fracture Overview Q&A

  1. What is a metacarpal fracture?A metacarpal fracture is a break in one of the five long bones known as metacarpals, found in the palm of the hand.

  2. What are common causes of metacarpal fractures?

  • Trauma: Falls, direct blows, or accidents.

  • Mechanisms: Includes direct blows (e.g., Boxer's Fracture), falls, twisting or bending, crushing injuries, and repetitive stress.

  1. What are the clinical features of a metacarpal fracture?

  • Symptoms include:

    • Pain: Localized and worsens with movement.

    • Swelling and bruising.

    • Deformity: Visible misalignment in displaced fractures.

    • Reduced Range of Motion (ROM).

    • Tenderness and decreased hand strength.

    • Rare numbness or tingling.

  1. What types of metacarpal fractures exist?

  • Boxer’s Fracture: Neck fracture of the 5th metacarpal.

  • Comminuted Fracture: Bone breaks into several pieces.

  • Displaced Fracture: Misaligned bone fragments.

  • Non-Displaced Fracture: Cracks without misalignment.

  • Stress Fracture: Hairline fracture.

  • Open Fracture: Bone protrudes through the skin.

  • Bennett's Fracture: Fracture-dislocation of the base of the thumb metacarpal.

  1. What does the physiotherapy assessment involve?

  • Patient History: Mechanism of injury, treatment received.

  • Inspection: Signs of swelling, bruising, deformity.

  • Palpation: Tenderness, assessment for nerve involvement.

  • Range of Motion (ROM): Active and passive assessments.

  • Strength Testing: Grip and finger strength assessment.

  • Neurovascular Assessment: Evaluating nerve injury and blood supply.

  1. What is the rehabilitation plan for metacarpal fractures?

  • Weeks 1-2: Acute Phase: Protection, pain management, gentle passive ROM.

  • Weeks 2-4: Early Recovery Phase: Restore pain-free motion, gentle exercises.

  • Weeks 4-6: Mid Recovery Phase: Increase ROM and start strengthening exercises.

  • Weeks 6-8: Late Recovery Phase: Functional training and strength development.

  • Weeks 8-12: Full Rehabilitation Phase: Return to activity with advanced strengthening.

  1. What additional considerations are there in rehabilitation?

  • Splinting/bracing durations depending on fracture type.

  • Attention to surgical scars in operative cases.

  • Possible work/school adjustments by occupational therapists.

  1. What factors affect the rehabilitation timeline?

  • Severity of the fracture: More complex fractures take longer to heal.

  • Age and health status of the individual.

  • Adherence to treatment and physiotherapy compliance.

  • Complications like infections can delay recovery.