Gouty Stenosing Tenosynovitis: Trigger Finger as a First Presentation of Tophaceous Gout.

Gout can lead to the deposition of tophi and chronic arthritis, for which surgical management is indicated when tophi interfere with the function of the finger. This case report discusses the management of a 37-year-old man with a past medical history of gout who presented with triggering of his small finger from gouty infiltration of his flexor digitorum profundus (FDP) tendon. An exploratory procedure that included tenolysis and release of the A1 pulley was performed.

Vascularized Pedicled Proximal Phalanx Flap for Spare Part for Reconstruction of Metacarpal Avulsion Injury.

Traumatic injuries to the hand with significant loss of bone or soft tissue can be quite difficult to reconstruct and often require an innovative and flexible surgical plan for reconstruction. We present a case of a young manual laborer with a significant crush avulsion injury involving his third and fourth metacarpals. We were able to preserve his fourth metacarpophalangeal joint by utilizing a pedicled vascularized proximal phalanx flap from the nonsalvageable third digit to reconstruct and provide osseous stability to the fourth metacarpal.

Synthesis of surfactants based on pentaerythritol. I. Cationic and zwitterionic gemini surfactants.

Simple strategies for the synthesis of five series of cationic gemini surfactants and one series of zwitterionic gemini surfactants from pentaerythritol have been developed. Two lipophilic groups were introduced onto pentaerythritol by alkylation of the known compound, O-benzylidenepentaerythritol, with 1-bromooctane, 1-bromodecane, 1-bromododecane, and 1-bromotetradecane. Hydrogenolysis of the benzylidene acetals gave diols which were converted into three different series of trimethylammonium derivatives.