ArticleOrthopaedic journal of sports medicine2016
A Surgical Model of Posttraumatic Osteoarthritis With Histological and Gait Validation.
Article in Orthopaedic journal of sports medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 10 citations in OpenAlex.
- Trial
- Evaluating Knee Osteoarthritis Induction Methods in Small Translational Animal Models from 1970-2025: A Comprehensive Systematic Review.The archives of bone and joint surgery · 2026Review
- The course of mechanical allodynia differs between forelimb innervation territories following median nerve injury in the rat.Frontiers in neuroscience · 2025Article
- Translational evaluation of gait behavior in rodent models of arthritic disorders with the CatWalk device - a narrative review.Frontiers in medicine · 2023Review
- Characterization of Non-Invasively Induced Post-Traumatic Osteoarthritis in Mice.Antioxidants (Basel, Switzerland) · 2022Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPosttraumatic osteoarthritis (PTOA) is secondary to an array of joint injuries. Animal models are useful tools for addressing the uniqueness of PTOA progression in each type of joint injury and developing strategies for PTOA prevention and treatment. HYPOTHESIS: Intra-articular fracture induces PTOA pathology. STUDY
designDescriptive laboratory study.
methodsThrough a parapatellar incision, the medial tibial plateau was exposed in the left knees of 8 Sprague-Dawley rats. Osteotomy at the midpoint between the tibial crest and the outermost portion of the medial tibial plateau, including the covering articular cartilage, was performed using a surgical blade. The fractured medial tibial plateau was fixed with 2 needles transversely. The fractured knees were not immobilized. Before and after surgery, rat gait was recorded. Rats were sacrificed at week 8, and their knees were harvested for histology.
resultsAfter intra-articular fracture, the affected limbs altered gait from baseline (week 0). In the first 2 weeks, the gait of the operated limbs featured a reduced paw print intensity and stride length but increased maximal contact and stance time. Reduction of maximal and mean print area and duty cycle (the percentage of stance phase in a step) was present from week 1 to week 5. Only print length was reduced in weeks 7 and 8. At week 8, histology of the operated knees demonstrated osteoarthritic pathology. The severity of the PTOA pathology did not correlate with the changes of print length at week 8.
conclusionIntra-articular fracture of the medial tibial plateau effectively induced PTOA in rat knees. During PTOA development, the injured limbs demonstrated characteristic gait. CLINICAL RELEVANCE: Intra-articular fracture represents severe joint injury and associates with a high rate of PTOA. This animal model, with histologic and gait validations, can be useful for future studies of PTOA prevention and early diagnosis.
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