ObjectiveTo investigate the effect of verapamil on the i schemic random skin flaps. MethodsThe dorsal random skin flap s of Wistar rats were raised (length/width=6/1). Verapamil was injected under th e flaps at the dose of 25mg/kg after the operations. Seven days later, the necro sis rate, the content of molondialehyde (MDA) in middle segment and the microsco pic observation were studied. ResultsThe necrosis rates were 1 5.9 % in verapamil group and 21.8 % in control group. The content of MDA in midd le segment of verapamil group was 164.8 nmol/L, and that in control group was 19 5.8 nmol/L. The difference was very significant. Under the microscope, the tissu e inflammatory reactions in the experiment group were not so severe as that in t he control group. ConclusionVerapamil improves the survival of the ischemic random skin flaps and it is applicable to give verapamil by subcut aneous injection.

OBJECTIVETo evaluate a new fasciocutaneous island flap for the repair of volar skin defects of the same finger.

METHODSA fasciocutaneous island flap, 0.5 cm distal to the volar skin defect, was formed on the dorsal side of the same finger. The proximal fascial pedicle was dissected long enough so that the flap could be transposed to the volar wound freely. One dorsal vein was kept undisturbed to safeguard the venous drainage of the distal part of the finger. When the side of the flap was so big that bilateral dorsal veins were included within the flap, the non-pedicle side of the flap was elevated first superior to the fascia until the dorsal vein was excluded from the flap, and the rest of the flap was dissected deep to the fascia. The donor side of the flap was covered with split skin graft.

RESULTSSix cases were treated. All flaps survived well.

CONCLUSIONThe dorsal fasciocutaneous island flap of the finger can be used safely for the repair of volar skin defect of the same finger.

Adolescent ; Adult ; Fingers ; surgery ; Humans ; Male ; Middle Aged ; Surgical Flaps

OBJECTIVETo study effective method of showing the microvascular architecture of human and rabbit skin flaps.

METHODSAccording to endogenous alkaline phosphatase activity, Gomori-Takamatsu method and NBT/BCIP method were used to observe the microvascular architecture.

RESULTSBoth methods had capability to demonstrate the microvascular architecture of the human skin flap, whereas the examining results of rabbits were negative.

CONCLUSIONSGreat difference of endogeneous alkaline phosphatase activity exists in different animals. Gomori-Takamatsu method and NBT/BCIP method are useful in study of microvascular architecture of human skin flaps.

Alkaline Phosphatase ; metabolism ; Animals ; Humans ; Male ; Microcirculation ; anatomy & histology ; Rabbits ; Surgical Flaps ; blood supply

OBJECTIVETo evaluate the anatomical division within latissimus dorsi and its electromyographic change as shoulder articulation movement.

METHODSUsing anatomical observation, projection of trophic vessel and nerve of latissimus dorsi was marked in the surface of skin. Electromyographic assessment of different area of latissimus dorsi was measured.

RESULTSThe latissimus dorsi was mainly supplied by thoracodorsal and its interior and external branches. The latissimus dorsi can be divided three area based on these anatomical result. Electromyographic amplitude in the three areas of muscle are different.

CONCLUSIONLastissimus dorsi can be divided into three areas by thoracodorsal vessel and nerve. The third area fibres were utilized preferentially when subjects performed six kinds of movements of the shoulder joint.

Adult ; Electromyography ; Female ; Humans ; Male ; Muscle, Skeletal ; physiology