Forces that can influence talonavicular joint are posterior tibial, the deltoid ligament, the calcaneonavicular
ligament, the whole talonavicular capsule, the dorsal talonavicular ligament, the bifurcated (Y) ligament, the inferior extensor retinaculum, and occasionally the cubonavicular oblique ligament.
A three-dimensional study of calcaneonavicular
An oblique (3/4) radiograph also showed the calcaneonavicular
coalition in the right foot only (Fig.
X-rays and CT showed a fibrocartilaginous coalition of the calcaneonavicular
joint along with partial osseous fusion of the naviculocuneiform (Chopart's joint) and medial cuneiform-first metatarsal joints (Figs.
Surgical reconstruction for calcaneonavicular
coalition: evaluation of function and gait.
and talocalcaneal coalitions have been reported to occur in approximately equal frequency, (6,7) however, recent investigations suggest that calcaneonavicular
coaltions occur 3 times more frequently.
Although it is uncommon for an os calcaneus secundarius to cause symptoms, range of motion of the subtalar joint may be limited by the ossicle, clinically resembling a calcaneonavicular
Chambers RB, Cook TM, Cowell HR (1982) Surgical reconstruction for calcaneonavicular
14) The medial longitudinal arch is supported by the plantar fascia and a ligamentous group comprising the long plantar, short plantar, and plantar calcaneonavicular
(spring) ligaments, and when weight is placed on the foot it works as a spring.
6% of exams performed, including 78 calcaneonavicular
Coalition of the middle talocalcaneal joint is second only to calcaneonavicular
Tears of the spring ligament (plantar calcaneonavicular
ligament) can lead to a flatfoot deformity and inferior subluxation of the talar head.