Clinical implications of novel variants of the fibularis (peroneus) quartus muscle inserting onto the cuboid bone: peroneocuboideus and peroneocalcaneocuboideus.

Two variants of the fibularis (peroneus) quartus muscle were identified and photographed in the legs of a 70-year-old white male cadaver. A rare peroneocuboideus (fibulocuboideus) muscle (as described by Chudzinski) and a novel peroneocalcaneocuboideus (fibulocalcaneocuboideus) muscle was found in the right and left leg, respectively. The latter muscle has not been previously reported and was termed "peroneocalcaneocuboideus" on the basis of its origin and insertions.

Locating the sural nerve during calcaneal (Achilles) tendon repair with confidence: a cadaveric study with clinical applications.

The sural nerve is at risk of iatrogenic injury even during minimally invasive operative procedures to repair the calcaneal (Achilles) tendon. Through 107 cadaveric leg dissections, the data derived from the present study was used to develop a regression equation that will enable surgeons to estimate the intersection point at which the sural nerve crosses the lateral border of the Achilles tendon, an important surgical landmark. In most cases, the sural nerve crossed the lateral border of the Achilles tendon 8 to 10 cm proximal to the superior border of the calcaneal tuberosity.

The fibulocalcaneus (peroneocalcaneus) internus muscle of MacAlister: Clinical and surgical implications.

A fibulocalcaneus (peroneocalcaneus) internus (PCI) muscle (of MacAlister) was identified and photographed in the left leg of a 78-year-old Caucasian female cadaver. This case study provides the first gross anatomical photo of this anomalous leg muscle and represents the first gross anatomical dissection of this muscle since 1914. The PCI muscle arose from the distal third of the fibula, posterior intermuscular septum of the leg, and flexor hallucis longus muscle.

An anterior fibulocalcaneus muscle: An anomalous muscle discovered in the anterior compartment of the leg.

Anomalous fibulocalcaneus muscles were discovered bilaterally in the anterior compartment of the leg during a routine dissection of a 76-year-old Caucasian male in the medical gross anatomy laboratory. These muscles originated from the fibula, anterior crural septum, and the investing fascia of the fibularis tertius, and they passed anterior to the lateral malleolus and inserted on the calcaneus, anterosuperior to the fibular trochlea. To our knowledge, these anterior fibulocalcaneus muscles have not been described previously.