Objective: To ascertain the correlation between shoe size and sizes of femoral and tibial components of total knee replacement preoperatively in patients undergoing total knee arthroplasty.
Study design: Prospective cohort study
Study settings and duration: This study was conducted at department of orthopedic surgery, Shifa International Hospital, Islamabad from July 2020 – December 2020.
Material and methods: Sample size was calculated using WHO calculator and it was 43 patients in total. Patients were approached through non-probability consecutive sampling. Shoe size of patients was measured using a Brannock device. During surgery, Implant model and sizes of the femoral and tibial components implanted during knee replacement were noted. Data was analyzed with the help of SPSS version 24. We applied Pearson’s correlation cofficeint. P value ≤ 0.05 was considered significant.
Results: Out of 43, there were 9(20.9%) male and female 34(79.1%). Mean age of patients was 51.7±6.8 (SD). We found good positive correlation between shoe size and tibial component (p=<0.001). Positive co relation was found between femoral component and shoe size (p=0.001). Shoe size predict 72% of Tibial component and 65% femoral component.
Conclusion: Shoe size is effective and safe predictors of total knee replacement components pre-operatively. This procedure is more accurate and less labor intensive. Accurate templating result in less surgical duration and provide several benefits to patients and health care providers.
Shemesh SS, Robinson J, Keswani A, Bronson MJ, Moucha CS, Chen D. The accuracy of digital templating for primary total hip arthroplasty: is there a difference between direct anterior and posterior approaches? The Journal of arthroplasty. 2017;32(6):1884-9.
Ghomrawi H, Mushlin A, Kang R, Banerjee S, Singh J, Sharma L, et al. Examining timeliness of total knee replacement among patients with knee osteoarthritis in the US: results from the OAI and MOST longitudinal cohorts. The Journal of bone and joint surgery American volume. 2020;102(6):468.
Ong K, Mowat F, Chan N, Lau E, Halpern M, Kurtz S. Economic burden of revision hip and knee arthroplasty in Medicare enrollees. Clinical Orthopaedics and Related Research (1976-2007). 2006;446:22-8.
Mahoney OM, Kinsey T. Overhang of the femoral component in total knee arthroplasty: risk factors and clinical consequences. JBJS. 2010;92(5):1115-21.
Hinman AD, Chan PH, Prentice HA, Paxton EW, Okike KM, Navarro RA. The association of race/ethnicity and total knee arthroplasty outcomes in a universally insured population. The Journal of Arthroplasty. 2020;35(6):1474-9.
Weinstein AM, Rome BN, Reichmann WM, Collins JE, Burbine SA, Thornhill TS, et al. Estimating the burden of total knee replacement in the United States. The Journal of bone and joint surgery American volume. 2013;95(5):385.
Visuri T, Mäkelä K, Pulkkinen P, Artama M, Pukkala E. Long-term mortality and causes of death among patients with a total knee prosthesis in primary osteoarthritis. The Knee. 2016;23(1):162-6.
Trainor S, Collins J, Mulvey H, Fitz W. Total knee replacement sizing: shoe size is a better predictor for implant size than body height. Archives of Bone and Joint Surgery. 2018;6(2):100.
Karachalios T, Komnos G, Amprazis V, Antoniou I, Athanaselis S. A 9-year outcome study comparing cancellous titanium-coated cementless to cemented tibial components of a single knee arthroplasty design. The Journal of Arthroplasty. 2018;33(12):3672-7.
Warren JA, Siddiqi A, Krebs VE, Molloy R, Higuera CA, Piuzzi NS. Bilateral simultaneous total knee arthroplasty may not be safe even in the healthiest patients. JBJS. 2021;103(4):303-11.
Lindberg-Larsen M, Jørgensen CC, Husted H, Kehlet H. Early morbidity after simultaneous and staged bilateral total knee arthroplasty. Knee surgery, sports traumatology, arthroscopy. 2015;23(3):831-7.
Pilling R, Moulder E, Allgar V, Messner J, Sun Z, Mohsen A. Patellar resurfacing in primary total knee replacement: a meta-analysis. JBJS. 2012;94(24):2270-8.
Monte A, Zignoli A. Muscle and tendon stiffness and belly gearing positively correlate with rate of torque development during explosive fixed end contractions. Journal of Biomechanics. 2021;114:110110.
Hernandez-Vaquero D, Abat F, Sarasquete J, Monllau JC. Reliability of preoperative measurement with standardized templating in Total Knee Arthroplasty. World Journal of Orthopedics. 2013;4(4):287.
Bhowmik-Stoker M, Scholl L, Khlopas A, Sultan AA, Sodhi N, Moskal JT, et al. Accurately Predicting Total Knee Component Size without Preoperative Radiographs. Surgical Technology International. 2018;33:337-42.
Sershon RA, Courtney PM, Rosenthal BD, Sporer SM, Levine BR. Can demographic variables accurately predict component sizing in primary total knee arthroplasty? The Journal of Arthroplasty. 2017;32(10):3004-8.
Naylor BH, Butler JT, Kuczynski B, Bohm AR, Scuderi GR. Can Component Size in Total Knee Arthroplasty Be Predicted Preoperatively?—An Analysis of Patient Characteristics. The Journal of Knee Surgery. 2022.
Ren AN, Neher RE, Bell T, Grimm J. Using patient demographics and statistical modeling to predict knee tibia component sizing in total knee arthroplasty. The Journal of Arthroplasty. 2018;33(6):1732-6.
Rehman H, MacDonald DR, Smith M, Zainudin S, Robertson G, Mitchell M. A novel technique for estimating component sizes in total knee arthroplasty. International Journal of Surgery. 2018;52:7-10.
Keswani A, Koenig KM, Bozic KJ. Value-based healthcare: part 1—designing and implementing integrated practice units for the management of musculoskeletal disease. Clinical Orthopaedics and Related Research®. 2016;474(10):2100-3.
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