(1) Several authors have attempted to identify persons who are at increased risk of navicular stress fracture.(2) Various factors contribute to the common delay in diagnosis of navicular stress fractures.(3) If you ask me to name the bones of the wrist, I can tell you that the ‘N’ stands for navicular , and the ‘L' stands for lunate.(4) Metatarsal and navicular fractures may require short leg casting for six to eight weeks unless comminuted or displaced.(5) The right patella and left tarsal navicular show osteochondritis.(6) The navicular surface is smaller and more triangular.(7) The insertion may ascend on the lateral face of the radius or may be extended distally to the navicular , trapezium, or base of the third metacarpal bone.(8) ‘As with all performance horses, arthritis and navicular can be a problem,’ Kim explained, saying she relies on her farrier and vet to work together to keep Parker healthy.(9) X-rays revealed a broken navicular bone in my left foot.(10) However, if the discomfort localizes over the navicular bone, further immobilization or surgical intervention may be indicated.(11) Tarsal navicular stress fractures were first described in 1958 in a study of racing greyhounds.(12) Up to 14 percent of the general population has an extra bone, the most common of which is the tarsal navicular (which is in the arch).(13) The metatarsal and the navicular bones were the most commonly involved.(14) Therapeutic intervention in navicular stress fractures has been clearly defined.(15) The tarsals of giraffes consist of only four bones: calcaneum, astragulus, fused navicular and cuboid, fused cuneiforms.(16) These rules call for palpation of the proximal fifth metatarsal and navicular in patients with acute ankle injuries and midfoot pain.