Riche-Cannieu connection in median nerve injuries

MM Carr, JB Boyd, CVA Bowen. Riche-Cannieu connection in median nerve injuries. Can J Plast Surg 1996;4(2):117-120. The Riche-Cannieu connection between the deep branch of the ulnar nerve and the recurrent motor branch of the median nerve was first noted in hand dissections almost 100 years ago. It was then considered rare and unimportant. Electrophysiologists have recently shown that this connection occurs in a large proportion of normal volunteers and accounts for a variable proportion of motor response in the thenar musculature. This report describes two cases of median nerve injuries with intact thenar function and postulates that this anomalous clinical presentation is due to the Riche-Cannieu connection. The unusual clinical situations emphasize the need for careful evaluation of nerve injuries. Key Words: Hand surgery, Peripheral nerve anomalies, Peripheral nerves injuries Connexion de Riche-Cannieu dans des lésions nerveuses médianes RÉSUMÉ : La connexion de Riche-Cannieu entre la branche profonde du nerf cubital et la branche récurrente motrice du nerf médian a tout d'abord été notée lors de dissections de la main il y a près de 100 ans. On considérait alors ce phénomène rare et peu important. Les électrophysiologistes ont récemment démontré que cette connexion survient chez une importante proportion de volontaires normaux et pourrait expliquer la proportion variable de réponse motrice au niveau de la musculature thénar. Ce rapport décrit deux cas de lésion du nerf médian, laissant la fonction thénar intacte et postule que cette présentation clinique anormale soit attribuable à la connexion de Riche-Cannieu. Ces situations cliniques inhabituelles soulignent la nécessité d'évaluer attentivement les lésions nerveuses. Trauma victims have long provided physicians with This case study discusses two patients with nerve injuries who presented with unusual clinical findings. CASE PRESENTATIONS Case 1 A 35-year-old, right hand dominant supermarket worker sustained a 2.5 cm laceration proximal to the right volar wrist crease on October 21, 1990 when a glass bottle exploded. He bandaged his injuries and continued with his work. That evening he CA

Measurement of CP asymmetry in B-s(0) -> (DsK +/-)-K--/+ decays

We report the measurements of the CP-violating parameters in B-s(0) -> (DsK +/-)-K--/+ decays observed in pp collisions, using a data set corresponding to an integrated luminosity of 3.0 fb(-1) recorded with the LHCb detector. We measure C-f = 0.73 +/- 0.14 +/- 0.05, A(f)(Delta Gamma) = 0.39 +/- 0.28 +/- 0.15, A() = 0.31 +/- 0.28 +/- 0.15, S-f = -0.52 +/- 0.20 +/- 0.07, S-(f) over bar = -0.49 +/- 0.20 +/- 0.07, where the uncertainties are statistical and systematic, respectively. These parameters are used together with the world-average value of the B-s(0) mixing phase, -2 beta(s), to obtain a measurement of the CKM angle gamma from B-s(0) -> (DsK +/-)-K--/+ decays, yielding gamma - (128 (+17)(-22))degrees modulo 180 degrees, where the uncertainty contains both statistical and systematic contributions. This corresponds to 3.8 sigma evidence for CP violation in the interference between decay and decay after mixing