Trapeziometacarpal joint (TMCJ) of the thumb is an unstable joint anatomically and depends on the integrity and normal functionality of the ligaments to prevent dislocation. Dislocation or subluxation of trapezio-metacarpal joint generally appears more often as injuries accompanied with intraarticular fracture of base of first metacarpal or trapezium. Isolated dorsolateral subluxation of trapeziometacarpal joint appears more often with osteoarthritis of the joint rather than as traumatic lesion and is an unstable injury because ligaments of the joint present some degree of impairment. Suspicions to diagnose the injury and precocious therapeutic management avoid complications which lead to impairment of hand function quality. Therapeutic procedures for TMCJ dislocation is controversial in literature. The aim of this study is to present a case of a 28 year-old man, who after a direct impact with a heavy object (hummer) over the base of the thumb, presented in the emergency department with an anterolateral subluxation of trapeziometacarpal joint and based on this case, to recall the modalities of the adequate treatment of the respective injury in literature.

Superficial peroneal nerve (SPN) is one of the terminal branches of the common peroneal nerve which innervates muscles of the lateral compartment of the leg. It is reported in literature in cadaveric studies, that there is anatomic variation of the SPN according to course and distribution and how important this finding is in many surgical interventions around leg, ankle, and foot, with scope to avoid iatrogenic damage of the respective nerve. The aim of this study is to present a woman of 67 years old who presented in emergency department after a fall with a bimalleolar fracture of the left ankle and paresthesia distribution of superficial peroneal nerve (dorsal surface of the foot, and 3rd to 5th toes) and based on this case to analyze if this anatomic variation of SPN has an essential role in lateral approach for internal fixation of lateral malleolar fractures.