Sanders classification is used to categorize fracture patterns of which calcaneal structure?

Sanders classification is used to categorize fracture patterns of which calcaneal structure?

• A. Posterior facet
• B. Calcaneal tuberosity
• C. Sustentaculum tali
• D. Talonavicular joint

Answer: (C)

Sanders classification targets fractures of the posterior facet of the calcaneus. This system uses CT to count how many articular fragments the posterior facet has and where the fracture lines lie, because the integrity of this part of the subtalar joint largely determines joint congruity and outcome after injury. It describes four types, increasing in complexity and comminution: a single, nondisplaced or minimally displaced articular fragment; a two-part fracture with one fracture line dividing the facet into two articular fragments; a three-part pattern with two lines creating three fragments; and a highly comminuted pattern with four or more fragments. Understanding this focus on the posterior facet helps guide treatment decisions, since preserving or restoring the joint surface here is crucial for function. Involvement of other calcaneal areas, like the sustentaculum tali, is not what this classification centers on.

Sanders classification targets fractures of the posterior facet of the calcaneus. This system uses CT to count how many articular fragments the posterior facet has and where the fracture lines lie, because the integrity of this part of the subtalar joint largely determines joint congruity and outcome after injury. It describes four types, increasing in complexity and comminution: a single, nondisplaced or minimally displaced articular fragment; a two-part fracture with one fracture line dividing the facet into two articular fragments; a three-part pattern with two lines creating three fragments; and a highly comminuted pattern with four or more fragments. Understanding this focus on the posterior facet helps guide treatment decisions, since preserving or restoring the joint surface here is crucial for function. Involvement of other calcaneal areas, like the sustentaculum tali, is not what this classification centers on.