Cory Calendine, M.D.

Cory Calendine, M.D. Orthopedic Surgeon, Hip/Knee Replacement Specialist, Cory Calendine, MD, Nashville/Brentwood/Franklin https://linktr.ee/corycalendinemd
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03/12/2026

Direct Anterior Approach Hip Replacement | 2026 Update
The direct anterior approach to total has changed the way many think about hip arthroplasty recovery. The concept is straightforward. Rather than cutting through the gluteal muscles or detaching tendons to access the hip joint, we work through a natural interval between the tensor fasciae latae and the sartorius. The muscles are moved aside, not divided. That distinction can have real clinical consequences. Muscles that are not cut do not need to heal, and that translates directly into less postoperative pain, faster mobilization, and fewer movement restrictions after surgery.
One of the biggest advantages is intraoperative imaging. With the patient supine on a specialized table, the pelvis stays level, giving us the ability to use live fluoroscopy (or robotic 3D guidance - more on that later) throughout the procedure. Before closing, we can verify leg length, component alignment, and implant position in real time. That ability to confirm everything before leaving the operating room was one of the primary reasons I adopted this approach. Most of my patients are walking within hours of surgery, and the majority go home the same day. Many report that their surgical discomfort is immediately less than the arthritis pain they had been living with. The anterior approach is not the right fit for every patient or every surgeon. Published literature shows that complication rates decrease significantly after a surgeon has performed ~50 cases, and by 3 to 6 mons, outcomes between anterior vs posterior approaches tend to equalize. Both approaches produce excellent long-term results - the key is matching the right approach to the right patient (and the right surgeon).
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Surgical Technique: SubV KneeThe subvastus approach to   is an important technical alternative in how we access the knee...
03/09/2026

Surgical Technique: SubV Knee
The subvastus approach to is an important technical alternative in how we access the knee joint during arthroplasty. In traditional knee replacement surgery, we use a medial parapatellar approach that requires splitting the quadriceps tendon to gain access to the joint. That works, but comes at a cost - cutting through the primary muscle responsible for knee extension. The subvastus approach changes that equation entirely. Instead of cutting through the quadriceps mechanism, we work underneath the vastus medialis obliquus (VMO), preserving its attachment to the patella. The VMO is retracted proximally + laterally while maintaining full continuity of the extensor mechanism. The arthrotomy is made just distal to the muscle belly, and the suprapatellar pouch is released from medial to lateral to allow full mobilization of the extensor mechanism. The patella is subluxed laterally rather than everted, and joint exposure is achieved with the knee flexed to 90 degrees.
Studies comparing subvastus vs traditional approaches demonstrate faster early recovery, improved early pain scores, reduced blood loss, and better short-term range of motion with equivalent complication rates. Patient selection matters. Candidates need mobile subcutaneous tissues to create a working window. Obesity, contractures, significant deformity, and revision cases are relative contraindications. There is a learning curve, but with experience, indications expand and operative times decrease. The combination of a muscle-sparing subvastus approach with modern robotic precision is where joint replacement is heading.
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📸 Endres NK, Minas T. Medial Subvastus Approach to the Knee: Surgical Technique. Brigham and Women’s Hospital.

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About Dr. Cory Calendine

Cory Calendine, M.D., received his medical degree from the University of Tennessee College of Medicine. He completed a residency in orthopaedic surgery at Vanderbilt University Medical Center, followed by fellowship training in adult reconstruction of the hip and knee at the world-renowned Anderson Orthopaedic Research Institute in Alexandria, Virginia.

Dr. Calendine currently serves as chief of the Division of Orthopaedic Surgery for Williamson Medical Center, where he often hosts national and international visiting surgeons who come to learn the latest techniques. He also serves as an elite reviewer for the Journal of Arthroplasty, and in 2018 was selected to serve as a member of the American Board of Orthopaedic Surgery Blueprint Development Exercise Work Group, which creates content for national credentialing exams. Dr. Calendine also lectures nationally and internationally on joint replacement, most recently at the 2018 Chinese Hip Society in Guiyang, China.

When he’s not practicing medicine, Dr. Calendine enjoys golf, movies, racquetball, youth ministry and weightlifting. He also dedicates his time to various nonprofit groups, such as Mission UpReach, City of Children and the Sarah Walker Foundation.