The Subtalar Implant

The subtalar Implant, also referred to as the subtalar arthroereisis, is intended to assist in treating the hyperpronated foot by stabilizing the subtalar joint. It does so by blocking forward, downward, and medial displacement of the talus, thereby limiting excessive eversion of the hind foot. The subtalar implant is also designed to be used as an adjunct in conjunction with other corrective procedures, including posterior tibial tendon reconstruction, FDL tendon transfers and the medial displacement calcaneal osteotomy.


Indications

The Subtalar implant is indicated for use in the treatment of the hyperpronated foot and stabilization of the subtalar joint. It is designed to block forward, downward and medial displacement of the talus, thus allowing normal subtalar joint motion but blocking excessive pronation and the resulting sequela.

Additional Indications Include:

  • Severe pronation
  • Calcaneal valgus deformity
  • Plantarflexed talus
  • Failed correction with long term orthotic treatment
  • Congenital and painful flat foot deformity
  • Repair of tarsal coalitions
  • Subtalar instability
  • Posterior tibial tendon dysfunction
  • Paralytic flat foot deformity

The BIOARCH™ Subtalar implants and alignment rods are intended for single use only.

Contrandications

Use of Subtalar implant is contraindicated in cases of active or suspected infection or in patients who are immunocompromised; in patients previously sensitized to titanium; in patients with inadequate bone stock; in patients with super-structural alignment deformities; or in patients with certain metabolic diseases.