Tibialis Posterior Tendon Dysfunction

Question 1

where does the tibialis posterior insert predominantly

Answer 1

medial navicular

Question 2

what does the tibialis posterior serve to do

Answer 2

support the medial arch of the foot

plantar flexor and investor of foot

Question 3

what can result in tendon rupture

Answer 3

repeated stress and degeneration leading to tendonitis or elongation
synovitis forming RA

Question 4

how should this tendonitis be treated

Answer 4

splint with medial arch support to avoid rupture

Question 5

what can be done if conservative measures fail

Answer 5

surgical decompression and tenosynovectomy

Question 6

what does elongation or rupture lead to

Answer 6

loss of medial arch resulting in valgus of the heel and flattening of the medial arch of the foot

Question 7

what can be done to prevent secondary OA

Answer 7

tendon transfer and a calcaneal osteotomy to reduce stress

Question 8

once OA occurs what is the appropriate surgical treatment if symptoms are severe

Answer 8

arthrodesis