14/01/2026
AVULSION FRACTURE OF THE 5TH METATARSAL TUBEROSITY
31F, alleged fall at workplace, climbing stairs, mosaic broke, rt ankle inverted
X-ray foot showing fracture base of 5th metatarsal.
There are 3 types of fractures that can occur here:
-Avulsion fracture
-Jones fracture
-Stress fracture
Avulsion fracture occurs at the tuberosity. Tuberosity is the site of attachment for plantar aponeurosis and peroneus brevis tendon.
Jones fracture occurs at the level of 4th – 5th inter-metatarsal articulation.
Stress fracture occurs in the proximal diaphysis, distal to the level of 4th – 5th inter-metatarsal articulation.
Why is it important to differentiate between them? Treatment and prognosis between the 3 are different.
-Avulsion fracture heals well without surgery.
-Jones fracture may require surgery and can have delayed healing.
-Stress fracture has increased risk of impaired healing due to poor blood supply and have the poorest prognosis.
KLINIK SAFIYA & SURGERI, KULIM, KEDAH, MALAYSIA