Reliability and validity of a new caliper for measuring patellar thickness

The process of patellar resurfacing during total knee arthroplasty involves measuring patellar thickness. The optimal residual patellar bone thickness has been questioned. The surgeon's ability to measure patellar thickness currently rests on a standard caliper. Standard methods involve use of...

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Bibliographic Details
Published in:The Journal of arthroplasty 2002-01, Vol.17 (1), p.105-107
Main Authors: Rauh, Michael A., Bayers-Thering, Mary, Buyea, Cathy M., Phillips, Matthew, Krackow, Kenneth A.
Format: Article
Language:English
Subjects:
Arthroplasty, Replacement, Knee - adverse effects
Arthroplasty, Replacement, Knee - instrumentation
Arthroplasty, Replacement, Knee - methods
Equipment Design
Humans
Orthopedic Equipment
Patella - anatomy & histology
Patella - pathology
Patella - surgery
Reproducibility of Results
Treatment Outcome
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Summary:The process of patellar resurfacing during total knee arthroplasty involves measuring patellar thickness. The optimal residual patellar bone thickness has been questioned. The surgeon's ability to measure patellar thickness currently rests on a standard caliper. Standard methods involve use of a smooth-mouthed caliper, which can overestimate patellar thickness because of soft tissue interposition. This brief communication introduces a new spiked caliper design that can be used to measure patellar bone thickness more accurately. Improved accuracy in measuring patellar bone thickness allows the operating surgeon to assess more correctly a patient's patellar bony status. This knowledge may result in fewer postoperative fracture complications resulting from deficiencies of bone owing to excessive resection.
ISSN:0883-5403
1532-8406
DOI:10.1054/arth.2002.29312