Simple suture and anchor in rabbit hips.
OBJECTIVE
USING BIOMECHANICAL STUDIES, THIS RESEARCH AIMS TO COMPARE HIP CAPSULORRHAPHY IN RABBITS, CARRIED OUT WITH TWO DIFFERENT TECHNIQUES: capsulorrhaphy with simple sutures and with anchors.


METHODS
Thirteen New Zealand Albino (Oryctolaguscuniculus) male rabbits, twenty-six hip joints, were used. First, a pilot project was performed with three rabbits (six hip joints). This experiment consisted of ten rabbits divided into two groups: group 1 underwent capsulorrhaphy on both right and left hips with simple suture using polyglycolic acid absorbable thread, and group 2 underwent capsulorrhaphy with titanium anchors. After a four-week postoperative period, the animals were euthanized and the hip joints were frozen. On the same day of the biomechanical studies, after the hip joints were previously unfrozen, the following parameters were evaluated: rigidity, maximum force, maximum deformity and energy.


RESULTS
There was no relevant statistical difference in rigidity, maximum force, maximum deformity and energy between the simple suture and anchor groups.


CONCLUSIONS
Through biomechanical analyses, using parameters of rigidity, maximum force, maximum deformity and energy, it has been shown that capsulorrhaphy with simple suture and with anchors has similar results in rabbit hip joints. Level of Evidence II, Prospective Comparative Study .
Department of Orthopedics and Traumatology of the School of Medicine of Universidade de São Paulo - São Paulo, SP, Brazil.
Fernando Cal
FC
Garcia Filho
Department of Orthopedics and Traumatology of the School of Medicine of Universidade de São Paulo - São Paulo, SP, Brazil.
Roberto
R
Guarniero
Department of Orthopedics and Traumatology of the School of Medicine of Universidade de São Paulo - São Paulo, SP, Brazil.
Rui Maciel
RM
de Godoy Júnior
Department of Orthopedics and Traumatology of the School of Medicine of Universidade de São Paulo - São Paulo, SP, Brazil.
César Augusto Martins
CA
Pereira
Adjunct Professor, Doctor of Escola Bahiana de Medicina e Saúde Pública Salvador, BA, Brazil.
Marcos Almeida
MA
Matos
Adjunct Professor, Doctor of Escola Bahiana de Medicina e Saúde Pública Salvador, BA, Brazil ; Intern of the Orthopedic and Traumatology Service of Hospital Infantil Martagão Gesteira - Salvador, BA, Brazil.
Lucas Cortizo
LC
Garcia
Biomechanics; Experimental animal models; Hip/surgery; New Zealand rabbits; Suture Anchor