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Meniscal suture. An experimental study in the dog
Y Kawai1, T Fukubayashi, J Nishino
1Department of Orthopaedic Surgery, Ohmiya Red Cross Hospital, Saitama, Japan.
Clinical Orthopaedics and Related Research
|June 1, 1989
Summary
Sutured medial meniscus tears in dogs showed significant healing promoted by both synovial and peripheral blood supply. After 12 weeks, tensile strength reached 80% of the contralateral limb, indicating substantial recovery.
Area of Science:
- Orthopedic surgery
- Regenerative medicine
- Veterinary science
Background:
- Meniscal tears are common knee injuries.
- Surgical repair aims to restore meniscal function.
- Understanding meniscal healing is crucial for treatment strategies.
Purpose of the Study:
- To evaluate the healing process of sutured medial meniscus tears in a canine model.
- To investigate the role of vascular supply in meniscal healing.
- To assess the biomechanical recovery of repaired menisci.
Main Methods:
- Induction of longitudinal tears in the medial meniscus of 43 dogs.
- Suturing of the torn menisci.
- Histological and microangiographic analysis at regular intervals over 12 weeks.
- Biomechanical testing of tensile strength.
Main Results:
- Healing was supported by both synovial and peripheral blood supplies.
- The healing tissue primarily consisted of fibrous tissue with some chondrocyte-like cells after 12 weeks.
- Maximum tensile strength achieved 80% of the contralateral limb by the end of the study period.
Conclusions:
- Sutured peripheral medial meniscus tears demonstrate a capacity for healing in dogs.
- Vascularization from both synovial and peripheral sources contributes to meniscal repair.
- Significant biomechanical recovery is achievable within 12 weeks post-suture.