Publications by authors named "Da-Zhi Yu"
Purpose: The reconstruction of Allen's type IV fingertip amputation is a clinical challenge. Our team designed bilateral unequal-sized hallux osteo-onychocutaneous free flaps for the long-term reconstruction of Allen's type IV fingertip amputation and conducted a retrospective study with a 5-year follow-up aims to evaluate the effects of this technique.
Methods: A retrospective analysis with a 5-year follow-up including 13 patients with Allen's type IV fingertip amputation who were admitted to our hospital from January 2010 to January 2017 was conducted.
Objective: To study the mechanism and significance of pH change in the coronary artery microthrombosis of rats.
Methods: After the sodium laurate-induced model of coronary artery microthrombosis of rats was constructed, the vascular endothelial cells were separated and then cultured in the mediums with different pH values for 24 h. Enzyme linked immunosorbent assay was used to detect the content of von Willebrand factor (vWF) in the medium; while the real-time PCR and western blot assay were used to detect the expression of fibrinogen-like protein 2 (FGL2) at the mRNA and protein level.
The purposes f this study were to (i) explore the possibility of splitting the selected forearm muscles into separate compartments in human subjects; (ii) quantify the architectural properties of each neuromuscular compartment; and (iii) discuss the implication of these properties in split tendon transfer procedures. Twenty upper limbs from 10 fresh human cadavers were used in this study. Ten limbs of five cadavers were used for intramuscular nerve study by modified Sihler's staining technique, which confirmed the neuromuscular compartments.
View Article and Find Full Text PDF[The reconstruction of erectile function with rabbit segmental gracilis musculocutaneous flap].
Zhonghua Zheng Xing Wai Ke Za Zhi
January 2012
Objective: To design an animal model for the reconstruction of penile erectile function with segmental gracilis musculocutaneous flap.
Methods: The rabbit gracilis muscle was split longitudinally into two approximately equal halves completely according to the principles of muscle compartmentalization. An animal model was designed for the reconstruction of erectile function with segmental musculocutaneous flap based on the anterior gracilis muscle bundle, with a silicone stick implanted as a supporter.
Two methods can simultaneously display both intramuscular nerves and blood vessels.
Plast Reconstr Surg
February 2012
Background: The arrangement and relationship of intramuscular nerves and blood vessels are critical to clinical physicians, but the majority of previous studies could not reflect them precisely.
Methods: In method 1, after rabbits were perfused with barium sulfate liquid silica gel, the specimen muscle was isolated and subjected to Sihler staining. The specimen muscles then underwent optical photography and molybdenum target radiography.
The nerve map of the human face, although important in guiding facial surgery, has not been well defined. In this study we applied a modified Sihler's technique to profile intramuscular innervation of human mimetic muscles. Six fresh cadaveric heads were used.
View Article and Find Full Text PDFArticle Synopsis
- The study investigates the intramuscular innervation of six muscle flaps commonly used in clinical settings: abductor hallucis, latissimus dorsi, gracilis, rectus abdominis, sartorius, and pectoralis minor.
- By dissecting five human cadavers and employing Sihler's staining technique, the researchers were able to observe and record the distribution of intramuscular nerves.
- The findings suggest that these muscles can be categorized into different shapes, each divided into compartments, making them suitable for donor tissue in reconstructive surgery.
[MAFbx and MuRF1 mRNA expression and its relationship with muscular contractility following free muscle transfer].
Zhonghua Zheng Xing Wai Ke Za Zhi
May 2009
Objective: To study muscle atrophy F-box (MAFbx) and muscle ring finger 1 (MuRF1) mRNA expression and its relationship with muscular contraction following free muscle transfer.
Methods: The gracilis muscle was orthotopic transferred in adult rat to establish the animal model. The muscle at the unoperated side was used as control.
Article Synopsis
- - The study investigates the neurovascular anatomy of forearm muscles to enhance limb reconstruction and donor site preservation by dissecting 28 forearms to analyze nerve and artery distribution.
- - Muscles were classified using Lym's system, and results showed variations in intramuscular nerve branches, with a higher count in muscle types IIa and III, making them more suitable for functional flap transfers.
- - Key findings indicated specific muscles like the flexor carpi ulnaris and radialis are ideal for muscular transfer, while the roles of the pronator teres and supinator are still debated, providing valuable insights for plastic surgeons and anatomists.
[Anatomy of buccal and marginal mandibular branches of facial nerve and its clinical significance].
Zhonghua Zheng Xing Wai Ke Za Zhi
September 2007
Objective: To study the course and distribution of buccal and marginal mandibular branches of facial nerve, and its relevance to the treatment of facial paralysis and the protection of facial nerve during surgery.
Methods: 12 cadaver heads were dissected (24 specimens). The course of the buccal and marginal mandibular branch and the interconnections between them were observed.