Front Matter - The Journal of Bone & Joint Surgery

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The Science of Better Fit Designed with a wide range of sizing options, based on the anatomical differences of men and women. 6 The Triathlon Knee System addresses smaller anatomies, often found in female patients, heavily concentrated in the region shown, while still accommodating larger male patients. • Broad range of size offerings are based on an anthropometric measurement study 6 for improved interplay between implant geometry and anatomic structure for women and men. • The Triathlon design incorporates a variable aspect ratio to adequately fit the female anatomy while still accommodating the male population. 6 • The many design aspects of the implant accommodate surgical realities. 7-Degree Anterior Flange • The unique 7-degree anterior flange design of the Triathlon Knee System is designed to provide the flexibility to downsize the femoral component while avoiding the incidence of notching. This feature culminates in the potential to provide patients with a more customized fit. To learn more about the Motion, Fit and Wear of Triathlon, please visit: www.stryker.com 6. Hitt, K., et al. Anthropometric Measurement of the Human Knee: correlation to the Sizing of Current Knee Arthroplasty Systems, JBJS, Vol. 85-A, Supplement 4, 2003. Over 100,000 implanted in just two years... Triathlon Stryker Orthopaedics 325 Corporate Drive, Mahwah, NJ 07430 www.stryker.com A surgeon must always rely on his or her own professional clinical judgment when deciding to use which products and/or techniques on individual patients. Stryker is not dispensing medical advice and recommends that surgeons be trained in orthopaedic surgeries before performing any surgeries. The information presented in this brochure is intended to demonstrate the breadth of Stryker product offerings. Always refer to the package insert, product label and/or user instructions before using any Stryker product. Products may not be available in all markets. Product availability is subject to the regulatory or medical practices that govern individual markets. Please contact your Stryker representative if you have questions about the availability of Stryker products in your area. Stryker Corporation or its divisions or other corporate affiliated entities own, use or have applied for the following trademarks or service marks: Triathlon, X3, N 2 \Vac. All other trademarks are trademarks of their respective owners or holders.7 Downloaded From: http://jbjs.org/ on 01/27/2014
Adv 32 JBJS [Br] Abstracts Now Available Hip Reduction of the potential for thermal damage during hip resurfacing H. S. Gill, P. A. Campbell, D. W. Murray, and K. A. De Smet J Bone Joint Surg Br 2007 89-B: 16-20 Resurfacing arthroplasty of the hip is being used increasingly as an alternative to total hip replacement, especially for young active patients. There is concern about necrosis of the femoral head after resurfacing which can result in fracture and loosening. Most systems use a cemented femoral component, with the potential for thermal necrosis of the cancellous bone of the reamed femoral head. We used thermal probes to record temperatures close to the cement-bone interface during resurfacing arthroplasty. The maximum temperature recorded at the cement-bone interface in four cases was approximately 68°C which was higher than that reported to kill osteocytes. A modified surgical technique using insertion of a suction cannula into the lesser trochanter, generous pulsed lavage and early reduction of the joint significantly reduced the maximum recorded cancellous bone temperature to approximately 36°C in five cases (p = 0.014). We recommend the modified technique since it significantly reduces temperatures at the cement-bone interface. Trauma Conservative treatment of isolated fractures of the medial malleolus D. Herscovici, Jr, J. M. Scaduto, and A. Infante J Bone Joint Surg Br 2007 89-B: 89-93 Between 1992 and 2000, 57 patients with 57 isolated fractures of the medial malleolus were treated conservatively by immobilisation in a cast. The results were assessed by examination, radiography and completion of the short form-36 questionnaire and American Orthopaedic Foot and Ankle Society ankle-hindfoot score. Of the 57 fractures 55 healed without further treatment. The mean combined dorsi- and plantar flexion was 52.3° (25° to 82°) and the mean short form-36 and American Orthopaedic Foot and Ankle Society scores 48.1 (28 to 60) and 89.8 (69 to 100), respectively. At review there was no evidence of medial instability, dermatological complications, malalignment of the mortise or of post-traumatic arthritis. Isolated fractures of the medial malleolus can obtain high rates of union and good functional results with conservative treatment. Operation should be reserved for bi- or trimalleolar fractures, open fractures, injuries which compromise the skin or those involving the plafond or for patients who develop painful nonunion. Knee Validation of the short-form WOMAC function scale for the evaluation of osteoarthritis of the knee K. G. Auw Yang, N. J. H. Raijmakers, A. J. Verbout, W. J. A. Dhert, and D. B. F. Saris J Bone Joint Surg Br 2007 89-B: 50-56 This study validates the short-form WOMAC function scale for assessment of conservative treatment of osteoarthritis of the knee. Data were collected before treatment and six and nine months later, from 100 patients with osteoarthritis of the knee to determine the validity, internal consistency, test-retest reliability, floor and ceiling effects, and responsiveness of the short-form WOMAC function scale. The scale showed high correlation with the traditional WOMAC and other measures. The internal consistency was good (Cronbach : 0.88 to 0.95) and an excellent test-retest reliability was found (Lin’s concordance correlation coefficient ( c): 0.85 to 0.94). The responsiveness was adequate and comparable to that of the traditional WOMAC (standardised response mean 0.56 to 0.44 and effect size 0.64 to 0.57) and appeared not to be significantly affected by floor or ceiling effects (0% and 7%, respectively). The short-form WOMAC function scale is a valid, reliable and responsive alternative to the traditional WOMAC in the evaluation of patients with osteoarthritis of the knee managed conservatively. It is simple to use in daily practice and is therefore less of a burden for patients in clinical trials. Downloaded From: http://jbjs.org/ on 01/27/2014 THE JOURNAL OF BONE AND JOINT SURGERY www.jbjs.org.uk
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Page 9 and 10: NEW Designed by John L. Stanton, MD
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Front Matter - The Journal of Bone & Joint Surgery

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