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Forefoot Fractures. Marie Bamer. What is a Forefoot Fx ?. Those fractures involving the great toe or any of the lesser toes, metatarsals, or sesamoid bones. 3 Types of Forefoot Fractures. Phalangeal Metatarsal Sesamoid. Types of Forefoot Fractures.
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Forefoot Fractures Marie Bamer
What is a Forefoot Fx? • Those fractures involving the great toe or any of the lesser toes, metatarsals, or sesamoid bones.
3 Types of Forefoot Fractures • Phalangeal • Metatarsal • Sesamoid
Types of Forefoot Fractures • Phalangeal Fractures: can involve the neck, shaft, or base of the bone • MOI:Results from a direct trauma or avulsion mechanism *fx of 1st from being hit with an axe
Types of Forefoot Fractures • Metatarsal Fractures: Fx of a metatarsal • MOI: fractures of the 1st- 4th usually result in direct trauma. 2nd -5th may occur as result of a twisting injury * Jones Fx- proximal 5th metatarsal shaft
Types of Forefoot Fractures • SesamoidFractures: splitting or fragmentation of one or both of the two small bones contained within the tendon of the flexor hallicus longus • MOI: often secondary to the impact of the foot on a hard surface while toes are dorsiflexed. *A) Comminuted fx B) Post-op resection of bone
OrthopaedicObjectives Anatomical alignment of the great toe, phalanx, metatarsal and sesamoid is essential in weight bearing and load distribution on the foot. Alignment of the 2nd- 5th metatarsals is important to minimize problematic gait and painful fitting of shoes Forefoot stability is important to maintain stable and pain-free gait Treatment Goals
Treatment Goals Rehabilitation Objectives • Range of Motion-restore and maintain all ROM • Muscle Strength- improve and restore strength of extensors, flexors, invertors, and evertors in foot • Functional Goals- normalize gait to pre-injury pattern
Lesser Phalanx Fx: 4 to 6 weeks 2nd, 3rd and 4th Metatarsal Fx: 4 to 6 weeks 5th Metatarsal Fx ( Jones Fx): 6 to 8 weeks Great Toe Phalanx Fx: 4 to 6 weeks 1st Metatarsal Fx: 6 to 8 weeks Sesamoid Fx: 4 to 8 weeks Expected time of bone healing
Lesser Phalanx Fx: 2 to 6 weeks 2nd, 3rd and 4th Metatarsal Fx: 4 to 6 weeks 5th Metatarsal Fx (Jones): 4 to 6 weeks (acute), 6 to 10 for delayed union, nonunion, or stress fx Great Toe Phalanx Fx: 4 to 6 weeks 1st Metatarsal Fx: 4 to 6 weeks Sesamoid Fx: 8 to 12 weeks, possibly longer after sesamoidectomy Expected Time of Rehabilitation
Methods of Treatment Lesser Phalanx Fx • Splints or Buddy Taping • Open Reduction and Percutaneous Pinning K –wires and short leg cast for 2-3 weeks *distal phalanx of 5th
Methods of Treatment 2nd, 3rd, 4th Metatarsal Fx • Cast-short leg walking *if undisplaced or minimally displaced • Closed Reduction and Percutaneous Pinning *closed, displaced or angulated fx- NWB cast for 2-3 weeks • Open Reduction and Internal Fixation *open, displaced- NWB cast for 2-3 weeks * 2nd MT
Methods of Treatment 5th Metatarsal Fx (Jones) • Cast/Splint • Acute avulsion=walking boot if displacement is less than 2 mm • Jones of proximal end= NWB cast • Open Reduction and Internal Fixation • Avulsion of greater than 2 mm= tension-band wire or lag screw • Delayed or non-union require intramedullary screw • NWB cast approx 6 weeks
Methods of Treatment Great Toe Phalanx Fx • Cast- NWB extended to toes • Closed Reduction and Percutaneous Pinning or Open Reduction and Internal Fixation
Methods of Treatment 1st Metatarsal Fx • Cast • Open Reduction and Internal Fixation
Methods of Treatment Sesamoid Fx • Cast/ Splint • Sesamoidectomy
Phase of Bone Healing Day of injury to 1 week • Stability of fx site: None • Stage of Bone Healing: Inflammatory phase • Radiograph: No callus * NWB, check cap refill, no deformities, radiograph,
Phase of Bone Healing Two Weeks • Stability of fx site: None to minimal • Stage of bone healing: Begins reparative phase • Radiograph: No change or early callus
Phase of Bone Healing Four to Six Weeks • Stability of fx site: Bridging callus and fx usually stable (acute fx) • Stage of bone healing: reparative phase • Radiograph: Bridging callus visible
Phase of Bone Healing Six to Eight Weeks • Stability of fx site: Fx stable with bridging callus • Stage of bone healing: reparative phase • Radiograph: Bridging callus visible w/ increased ridgidity. Fx line less distinct
Phase of Bone Healing Eight to Twelve Weeks • Stability of fx site: Stable • Stage of bone healing: Remodeling Phase • Radiograph: abundant callus
Special Considerations of the Fracture • Age – elderly at higher risks for joint stiffness • Articular Involvement- any fx in forefoot requires anatomic reduction • Location • Open Fractures- all must be treated aggressively with irrigation, debridement, and intravenous antibiotics