Lower extremity (knee) trauma is currently based on a bone fracture criterion derived from impacts of aged specimens. Recent clinical studies, however, indicate that a chronic disease (post-traumatic osteoarthritis), may be precipitated after mechanical insult without obvious bone fracture(1). It is hypothesized this is due to microcracking of subchondral bone under cartilage. This hard tissue layer is known to change with age and pathology. Ten ‘aged’ (71 years) and ten ‘young’ (47 years) cadaver knee joints were impacted to study the influence of age and pathology on the fracture load, and incidents of occult injury. Our results indicate that fracture load, per se, was independent of specimen age. On the other hand, severely pathological specimens required significantly higher loads to fracture bone. Occult microcraking was also observed in subfracture experiments, however, fewer incidents were recorded for the ‘aged’ specimens. This type of injury has been associated with knee pain and the development of disease in the chronic setting. These data suggest that a bone fracture criterion based largely on pathological specimens would not provide a conservative measure of tolerance for the normal driving population.


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    Titel :

    Insult to the Human Cadaver Patellofemoral Joint: Effects of Age on Fracture Tolerance and Occult Injury


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    39th Stapp Car Crash Conference (1995) ; 1995



    Erscheinungsdatum :

    1995-11-01




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    Insult to the Human Cadaver Patellofemoral Joint: Effects of Age on Fracture Tolerance and Occult Injury

    Haut, R. C. / Atkinson, P. J. / SAE | British Library Conference Proceedings | 1995


    Insult to the human cadaver patellofemoral joint:effects of age on fracture tolerance and occult injury

    Haut,R.C. / Atkinson,P.J. / Michigan State Univ.,US | Kraftfahrwesen | 1995


    Comparison of Head Acceleration Injury Indices in Cadaver Skull Fracture

    Thomas, L. M. / Hodgson, Voigt R. | SAE Technical Papers | 1971


    Patellofemoral joint fracture load prediction using physical and pathological parameters

    Atkinson,P.J. / Mackenzie,C.M. / Haut,R.C. et al. | Kraftfahrwesen | 1998


    Patellofemoral Joint Fracture Load Prediction Using Physical and Pathological Parameters

    Mackenzie, Charles M. / Atkinson, Patrick J. / Haut, Roger C. | SAE Technical Papers | 1998