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Biomedical subjects

W de Moura

Publications and source records attributed to W de Moura.

5 recordsLinked to original sources
PubMed1990

Arterial system of the fingers.

The arterial system in 141 fresh human cadavers was studied under the operating microscope using magnifications of 8 to 25 times. The vascular system was injected with latex material alone for identification of the vessels during dissection, and with latex and lead for x-ray contrast studies. An overall repetitive pattern in size, location, and distribution of the vessels was noted. The dorsal branches of the paired digital vessels in each phalanx were generally 4 and demonstrated a regular, repetitive distribution corresponding to: a, condylar vessel; b, metaphyseal vessel; c, dorsal skin vessel; and d, transverse palmar arch. Proximal and middle transverse palmar arches were found always in relation to the cruciate ligaments. The distal transverse palmar arch lay just distal to the insertion of the profundus.

Arteries↗
PubMed1985

Digital flexor tendon sheath: an anatomic study.

The flexor sheath of 72 fresh human cadaver digits was examined under the operating microscope utilizing fiberoptic and polarizing light sources. Magnifications of eight to 25 times were used during the dissection. The vascular system was injected with latex material, and longitudinal and cross sections of the tissues were studied histologically. The flexor sheath is seen to be a contained bursal environment with specialized anatomy to provide for flexion and extension. The formerly perplexing pulley system is now seen to be an orderly repeating system of proximal and distal pulleys. The anatomic relationships of the vessels to the proximal cul-de-sac and vincular system are described.

Cadaver↗
PubMed1985

The fate of tendon healing after restoration of the integrity of the tendon sheath with autogenous vein grafts.

This experimental study in the chicken model compares the results of sheath closure during primary tendon surgery. Sheath closure after tendon grafting was accomplished by trapdoor of the original sheath, vein patch, and vein conduit. After casting in flexion for 14 days, the operated foot and digits were taken through a full passive range of motion every 3 days. At the 28th postoperative day, all immobilization was removed and free active range of motion and daily perching began. Active flexion was measured after death by continuous traction on the proximal profundus tendon: simulated active flexion. The unoperated contralateral foot served as the control. All operated middle toes achieved significantly greater functional return when the sheath was restored either with trap-door closure, vein conduit, or vein patch compared with simple excision of the sheath. The results indicate the efficacy of sheath closure as well as the possibility of utilizing vein patches or conduits during primary tendon repair.

Animals↗