The needles most commonly used for obtaining bone marrow aspirates from the sternum are the Salah and Klima needles. They were designed in the 1930s, and except for the introduction of different kinds of stops and guards there has been no change in their basic structure and design. These instruments are small, do not fit properly in the operator's hand, and the lack of a T-bar handle often make...

August Bier’s first report of spinal anesthesia in August 1898 impressively described the development of a poste dural puncture headache (PDPH) (1). When asked for complications of spinal anesthesia today, patients often respond with PDPH. PDPH is defined as a constant heado ache that worsens in the sitting or upright position folglowing lumbar puncture (LP). Its incidence after spinal anesthes...