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bone health & Harmony blog

Body Mass Index and Joint Replacement Surgery

Body Mass Index and Joint Replacement Surgery

September 15, 2021

Calculate Your BMI

What Is Body Mass Index [BMI]

Your BMI is a measurement of your body weight based on your height and weight. Although your BMI does not actually “measure” your percentage of body fat, it is a useful tool to estimate a healthy body weight based on your height. Due to its ease of measurement and calculation, it is the most widely used diagnostic indicator to identify a person’s optimal weight depending on his height. Your BMI “number” will inform you if you are underweight, of normal weight, overweight, or obese. However, due to the wide variety of body types, the distribution of muscle and bone mass, etc., it is not appropriate to use this as the only or final indication for diagnosis.

The formulas to calculate BMI based on two of the most commonly used unit systems:

BMI = weight(kg) / height(m) (Metric Units)
BMI = 703·weight(lb) / height(in) (U.S. Units)

BMI Table for Adults

This is the World Health Organization’s (WHO) recommended body weight based on BMI values for adults. It is used for both men and women, age 18 or older. The Body mass chart for adults and the body mass chart for children is different. This is because body mass index is accounted differently based on age and growth spurts. Here is the Body Mass Index Chart for women and for men that are 18 and older:

Adult BMI Table

BMI and Joint Replacement Surgery

Cory Calendine, MD is an Orthopaedic Surgeon and founding partner of the Bone and Joint Institute of Tennessee at Williamson County Hospital in Franklin, TN. Dr. Calendine is an expert in Joint Replacement, specializing in Hip and Knee Surgery. From diagnosis through treatment, the Orthopaedic Surgical experts at the Bone and Joint Institute use the latest techniques and technology to improve care for people with musculoskeletal problems. For more information, please contact our office or schedule your appointment today.

SCHEDULE AN APPOINTMENT CONTACT DR. CALENDINE CLINIC LOCATION AND HOURS

Nerve Blocks for Knee Replacement Surgery

Modern nerve blocks have revolutionized knee replacement recovery by providing targeted pain relief while preserving muscle function essential for rehabilitation. Advanced techniques including spinal anesthesia, adductor canal blocks, and IPACK procedures reduce opioid requirements by up to 70% and enable patients to walk within hours of surgery. Unlike traditional methods that caused significant muscle weakness, these motor-sparing approaches maintain 92% of quadriceps strength, reducing fall risk and accelerating physical therapy progress. Patients report pain scores of 3-4 out of 10 in the first 24 hours compared to 6-8 with older techniques. These evidence-based methods, used in over 90% of successful knee replacements, offer superior comfort, faster mobilization, and higher patient satisfaction while minimizing complications and dependency risks for optimal surgical outcomes.

What Is the Subvastus Approach Knee Replacement and Why I Combine It with Robotics

Discover the subvastus approach to knee replacement combined with Mako robotic technology for faster recovery and less pain. Dr. Cory Calendine explains how this muscle-sparing, minimally invasive technique preserves your quadriceps muscle, reduces surgical trauma, and gets you back to your active lifestyle quicker than traditional methods. Learn why robotic-assisted SubV knee replacement is revolutionizing orthopedic surgery in Franklin, TN and greater Nashville.

Hip Replacement Myths

Approximately 400,000 hip replacements will be performed this year in the US. Hip replacement surgical technique and implant design has advanced at a rapid pace, and many outdated hip replacement myths linger, especially on the internet. If you’re suffering with hip pain, don’t allow these misconceptions keep you from seeking advice from a qualified specialist.