Effects of intra-articular distal radius depression on wrist joint contact characteristics

Wagner, William F.; Tencer, Allan F.; Kiser, P.; Trumble, Thomas E.

doi:10.1016/s0363-5023(96)80003-7

Cited by 66 publications

(28 citation statements)

References 16 publications

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“…One of several proposed etiologies is that residual incongruities (i.e., anatomical irregularities in the articular surfaces) remaining after the injury and treatment lead to aberrations in the joint contact stress distributions which, over time, predispose to post-traumatic OA (Lefkoe et al, 1993;Wagner et al, 1996). The FE method provides an ideal vehicle by which to study joint contact stresses on a patient-specific basis.…”

Section: The Rationale For Validation: the Fe Modelmentioning

confidence: 99%

Physical validation of a patient-specific contact finite element model of the ankle

Anderson

Goldsworthy

et al. 2007

Journal of Biomechanics

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A validation study was conducted to determine the extent to which computational ankle contact finite element (FE) results agreed with experimentally measured tibio-talar contact stress. Two cadaver ankles were loaded in separate test sessions, during which ankle contact stresses were measured with a high-resolution (Tekscan) pressure sensor. Corresponding contact FE analyses were subsequently performed for comparison. The agreement was good between FE-computed and experimentally measured mean (3.2% discrepancy for one ankle, 19.3% for the other) and maximum (1.5% and 6.2%) contact stress, as well as for contact area (1.7% and 14.9%). There was also excellent agreement between histograms of fractional areas of cartilage experiencing specific ranges of contact stress. Finally, point-by-point comparisons between the computed and measured contact stress distributions over the articular surface showed substantial agreement, with correlation coefficients of 90% for one ankle and 86% for the other. In the past, general qualitative, but little direct quantitative agreement has been demonstrated with articular joint contact FE models. The methods used for this validation enable formal comparison of computational and experimental results, and open the way for objective statistical measures of regional correlation between FE-computed contact stress distributions from comparison articular joint surfaces (e.g., those from an intact versus those with residual intra-articular fracture incongruity).

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Section: The Rationale For Validation: the Fe Modelmentioning

confidence: 99%

Physical validation of a patient-specific contact finite element model of the ankle

Anderson

Goldsworthy

et al. 2007

Journal of Biomechanics

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“…To highlight this matter I will like to remind the reader that previous clinical studies support the opinion that a step-off of more than 2 mm in the radiocarpal joint is associated with increased arthritic changes (Knirk and Jupiter, 1986), while steps of 1 mm cause pain and decreased range of motion and grip strength (Fernandez and Geissler, 1991;Trumble et al, 1994). Furthermore, biomechanical studies (Wagner et al, 1996) have shown that 1 mm steps cause significant pressure changes. This study showed that scaphoid facet depression produced more overload on the intact area than lunate facet depression (die punch fragment).…”

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confidence: 94%

Should Anatomic Reduction be Pursued in Distal Radial Fractures?

Fernández

2000

Journal of Hand Surgery

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Two articles on distal radial fractures in young adults are published in this issue of the journal. One reports the results of open reduction and internal fixation with the p-plate in a group of patients in which the majority of fractures were complex and intraarticular. The other retrospectively assessed 169 fractures with an average follow-up of 4.9 years, based on the radiographic evaluation of the patient's X-rays until discharge and on the answers provided by a patient-based subjective outcome questionnaire. My task has been to comment, criticise and analyse the findings and results reported in both articles, in order to highlight areas of uncertainty and controversy regarding the current management of fractures of the distal radius in the younger age group.

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“…47 This in part is caused by overload on the unaffected fossa 48 and because the malunited fragments erode the opposing surface of the carpal bone. 47,49 Early osteotomy for impending malunion is advised and good results have been reported.…”

Section: Discussionmentioning

confidence: 99%

Reconstruction of the Distal Radius Facet by a Free Vascularized Osteochondral Autograft: Anatomic Study and Report of a Patient

Piñal

García-Bernal

Delgado

et al. 2005

The Journal of Hand Surgery

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Effects of intra-articular distal radius depression on wrist joint contact characteristics

Cited by 66 publications

References 16 publications

Physical validation of a patient-specific contact finite element model of the ankle

Physical validation of a patient-specific contact finite element model of the ankle

Should Anatomic Reduction be Pursued in Distal Radial Fractures?

Reconstruction of the Distal Radius Facet by a Free Vascularized Osteochondral Autograft: Anatomic Study and Report of a Patient

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