Traumatic avulsion of the trochanter minor in a 15-year-old boy: an uncommon injury.

A 15-year-old boy was seen at the emergency department with severe groin pain following an acute soccer injury. The pain irradiated towards the knee region. He was unable to move his right leg, and unable to stand on it. Physical examination revealed an extremely tender groin. Hip function was difficult to assess due to the severe pain. Hip and pelvis radiographs demonstrated a 1.3 cm large bone fragment detached and displaced superiorly relative to the trochanter minor (Fig. A). MR images revealed the retracted bone fragment (arrow) with the iliopsoas tendon (arrowheads) attached to it (Fig. B, C ). The tendon, bone fragment and trochanter minor were surrounded by a hyperintense fluid collection. Ultrasound also revealed the bone fragment with the attached tendon, although the relationship to the deeper trochanter minor was difficult to appreciate on ultrasound ). Recovery was uneventful. The patient was seen back after 9 weeks and clinical symptoms had complete subsided with entirely normal hip testing

The Edgeworth-Kuiper debris disk

(Abridged) The Edgeworth-Kuiper belt with its presumed dusty debris is a natural reference for extrsolar debris disks. We employ a new algorithm to eliminate the inclination and the distance selection effects in the known TNO populations to derive expected parameters of the "true" EKB. Its estimated mass is M_EKB=0.12 M_earth, which is by a factor of \sim 15 larger than the mass of the EKB objects detected so far. About a half of the total EKB mass is in classical and resonant objects and another half is in scattered ones. Treating the debiased populations of EKB objects as dust parent bodies, we then "generate" their dust disk with our collisional code. Apart from accurate handling of collisions and direct radiation pressure, we include the Poynting-Robertson (P-R) drag, which cannot be ignored for the EKB dust disk. Outside the classical EKB, the radial profile of the optical depth approximately follows tau \sim r^-2 which is roughly intermediate between the slope predicted analytically for collision-dominated (r^-1.5) and transport-dominated (r^-2.5) disks. The cross section-dominating grain size still lies just above the blowout size (\sim 1...2 \microm), as it would without the P-R transport. However, if the EKB were by one order of magnitude less massive, the optical depth profile would fall off as tau \sim r^-3, and the cross section-dominating grain size would shift from \sim 1...2\microm to ~100 \microm. These properties are seen if dust is assumed to be generated only by known TNOs. If the solar system were observed from outside, the thermal emission flux from the EKB dust would be about two orders of magnitude lower than for solar-type stars with the brightest known infrared excesses observed from the same distance. Herschel and other new-generation facilities should reveal extrasolar debris disks nearly as tenuous as the EKB disk. The Herschel/PACS instrument should be able to detect disks at a \sim 1...2M_EKB level.Comment: 18 pages, 14 figures, accepted for publication in A&

Observation of a Self-Limiting, Shear-Induced Turbulent Inversion Layer Above Marine Stratocumulus

High-resolution measurements of thermodynamic, microphysical, and turbulence properties inside a turbulent inversion layer above a marine stratocumulus cloud layer are presented. The measurements are performed with the helicopter-towed measurement payload Airborne Cloud Turbulence Observation System (ACTOS), which allows for sampling with low true air speeds and steep profiles through cloud top. Vertical profiles show that the turbulent inversion layer consists of clear air above the cloud top, with nearly linear profiles of potential temperature, horizontal wind speed, absolute humidity, and concentration of interstitial aerosol. The layer is turbulent, with an energy dissipation rate nearly the same as that in the lower cloud, suggesting that the two are actively coupled, but with significant anisotropic turbulence at the large scales within the turbulent inversion layer. The turbulent inversion layer is traversed six times and the layer thickness is observed to vary between 37 and 85 m, whereas the potential temperature and horizontal wind speed differences at the top and bottom of the layer remain essentially constant. The Richardson number therefore increases with increasing layer thickness, from approximately 0. 2 to 0. 7, suggesting that the layer develops to the point where shear production of turbulence is sufficiently weak to be balanced by buoyancy suppression. This picture is consistent with prior numerical simulations of the evolution of turbulence in localized stratified shear layers. It is observed that the large eddy scale is suppressed by buoyancy and is on the order of the Ozmidov scale, much less than the thickness of the turbulent inversion layer, such that direct mixing between the cloud top and the free troposphere is inhibited, and the entrainment velocity tends to decrease with increasing turbulent inversion-layer thickness. Qualitatively, the turbulent inversion layer likely grows through nibbling rather than engulfment

ICAR: endoscopic skull‐base surgery

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Malte-Ludolf Babin. — « Orgolh »-« umil ». Untersuchungen zur lexikalischen Ausprägung des Altokzitanischen im Sinnbereich des Selbstgefühls. Tübingen, Niemeyer, 1993.

Brucker Ch. Malte-Ludolf Babin. — « Orgolh »-« umil ». Untersuchungen zur lexikalischen Ausprägung des Altokzitanischen im Sinnbereich des Selbstgefühls. Tübingen, Niemeyer, 1993.. In: Cahiers de civilisation médiévale, 38e année (n°152), Octobre-décembre 1995. pp. 365-366

Karin Ueltschi. — La didactique de la chair. Approches et enjeux d'un discours en français au moyen âgeGenève, Droz, 1993 (Publ. romanes et françaises, 204)

Brucker Ch. Karin Ueltschi. — La didactique de la chair. Approches et enjeux d'un discours en français au moyen âgeGenève, Droz, 1993 (Publ. romanes et françaises, 204). In: Cahiers de civilisation médiévale, 39e année (n°156), Octobre-décembre 1996. pp. 388-389

Ipomédon, poème de Hue de Rotelande (fin du XIIe siècle), éd. A. J. Holden. 1979 (" Bibl. fr. et rom ", 17)

Brucker Ch. Ipomédon, poème de Hue de Rotelande (fin du XIIe siècle), éd. A. J. Holden. 1979 (" Bibl. fr. et rom ", 17). In: Cahiers de civilisation médiévale, 25e année (n°98), Avril-juin 1982. pp. 150-151