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  • Home
  • About Dr. Izadi
    • About Dr. Izadi
    • What's a Hand Surgeon?
    • Which Hand Surgeon is Right For Me?
    • Blog
  • Hand
    • Hand
    • Hand Anatomy
    • Hand Arthritis >
      • Hand Arthritis
      • Knuckle Arthritis
      • Thumb Arthritis
    • Dupuytren's Contracture
    • Fingers & Thumb >
      • Fingers & Thumb
      • Baseball (Mallet) Finger
      • Basketball Finger Injuries
      • Fingertip Injuries
      • Jammed Finger
      • Jersey Finger
      • Trigger Finger
      • Gamekeeper's Thumb
      • Skier's Thumb
      • Thumb Sprain
    • Ganglion Cysts
    • Hand Fractures
    • Nail Bed Injuries
    • Hand Numbness & Tingling
    • Hand Pain
    • Tendon Injuries >
      • Tendon Injuries
      • Extensor Tendon Injuries
      • Flexor Tendon Injuries
  • Wrist
    • Wrist
    • Wrist Anatomy
    • Wrist Arthritis
    • Wrist Arthroscopy
    • Carpal Tunnel Syndrome
    • Cyclist's Palsy
    • de Quervain's Tendonitis
    • Wrist Fractures >
      • Wrist Fracture
      • Scaphoid Fracture
      • Scaphoid Non-Union
    • Ganglion Cysts
    • Golf Injuries
    • Kienbock Disease
    • Wrist Pain
    • Snowboarding Injuries
  • Elbow
    • Elbow
    • Elbow Anatomy
    • Elbow Arthritis
    • Cubital Tunnel Syndrome
    • Distal Biceps Tendon Rupture
    • Elbow Fractures
    • Golfer's Elbow (Medial Epicondylitis)
    • Olecranon Bursitis
    • Elbow Pain
    • Tennis Elbow (Lateral Epicondylitis)
  • Arthritis
    • Arthritis
    • Inflammatory Arthritis
    • Juvenile Arthritis
    • Osteoarthritis
    • Post-Traumatic Arthritis
    • Psoriatic Arthritis
    • Rheumatoid Arthritis
  • Work Comp
    • Common Work Comp Claims >
      • Repetitive Motion Injuries
      • Slips, Trips and Falls
      • Fall to Lower Level
      • Machinery Accidents
      • Overexertion
      • Struck by an Object
      • Struck Against an Object
      • Bodily Reaction
      • Highway Incident
      • Workplace Violence
    • Work Comp >
      • Work Comp Second Opinion
      • Work Comp Appointment
      • Work Comp Injuries >
        • Acute Work Comp Injuries >
          • Fractures and Falls
          • Amputations
          • Agricultural Accidents
        • Chronic Work Comp Injuries >
          • Carpal Tunnel Syndrome
          • Cubital Tunnel Syndrome
          • Hand-Arm Vibration Syndrome
        • Hand Injuries
        • Wrist Injuries
        • Elbow Injuries
      • For Case Workers
    • Can you Choose Your Work Comp Doctor?
    • What is Workers' Compensation?
  • Second Opinion
  • PATIENTS
    • New Patients
    • Virtual Care
    • COVID-19
    • Surgery >
      • Wide Awake Hand Surgery
      • Anesthesia
      • Before Surgery
      • Day of Surgery
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      • Smoking & Wound Healing
    • Steroid Injections
    • Patient Stories >
      • Scheduling Test
      • Embedded Schedule
  • Contact
​CALL (402) 390-4111 for an appointment today​

Jammed Finger

If you look at your fingers, they each have three sections called phalanges (pleural of phalanx). The thumb has two phalanges. Each phalanx (proximal, middle, and distal) is separated by a joint with the one closest to the nail called the DIP or distal interphalangeal joint. The PIP or proximal interphalangeal joints form the middle knuckle joints of the fingers. The thumb has only one IP or interphalangeal joint.

On each side of an IP joint are collateral ligaments, which provide joint stability from excessive side-to-side motion. These ligaments can tear, partially or fully, when enough force is applied to the joint. The collateral ligament can tear at one of two locations, (1) at its attachment to the proximal phalanx or (2) at its attachment to the volar plate and middle phalanx (see Figure 1). The PIP joint is the one most commonly involved in collateral ligament injuries. The collateral ligament tears are the cause of finger sprains and usually happen when a person forcefully jams their finger. These type of injuries are collectively known as the "jammed finger" injuries.

Collateral ligament injuries present as pain, swelling or deformity at the affected joint, and inability to fully move the joint, If the joint is stable and there is no avulsion fracture where the ligament has pulled off a piece of bone from the joint surface of the middle phalanx, the injury can be treated with buddy taping of the affected finger. 

Picture
Figure 1. Anatomy of the finger with collateral ligaments and volar plate.
Patients with collateral ligament injuries may continue their daily activities and participate in sporting events as their symptoms allow. If joints are unstable, patients should be referred to a hand surgeon. Children with collateral ligament injuries should always be referred to a hand surgeon because their growth plates are often involved in this type of injury.

If you have any further questions, please do not hesitate to email me at izadihand@nmhs.org.
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