World-class orthopedic expertise. Unmatched personal care.
Fellowship-trained hip and knee specialists with decades of combined experience in joint replacement, complex reconstruction, minimally invasive techniques, and rapid-recovery pathways.
Hip & Knee Replacement | Complex Joint Reconstruction | Rapid-Recovery & Outpatient Joint Arthroplasty
Dr. Assini is an experienced, fellowship-trained orthopedic surgeon with deep expertise in hip and knee replacement, complex reconstruction, and orthopedic trauma. He is a recognized innovator — notably as a developer of the "AnteriorPATH" minimally invasive total hip arthroplasty technique. He is the designer of two femoral hip stems specifically designed for minimally invasive total hip surgery.
Dr. Assini utilizes technology whenever appropriate to optimize surgical outcomes. This includes the use of patient specific navigation and robotic assisted surgery, especially during total knee arthroplasty. He has lectured and taught fellow surgeons around the world.
He is passionate about rapid-recovery protocols and outpatient joint replacement. Over 85% of Dr. Assini's patients are discharged home the same day of their surgery.
"Each patient's presentation is unique and deserves a personalized treatment plan."
Hip & Knee Replacement | Minimally Invasive Anterior Hip & Outpatient Joint Surgery | Joint Revision & Reconstruction
Dr. Loucks is a highly experienced hip and knee specialist who started private practice in Denver in 2003. As a founding partner of Peak Orthopedics & Spine, he has built a leading practice focused on hip/knee arthroplasty — including complex reconstructions, revisions, cartilage repair, and sports-related cases.
In 2004, Dr. Loucks and Dr. Greenhow were the first surgeons in the Denver area to perform the minimally invasive, muscle-sparing Anterior Hip Replacement (AMIS), and since then he has performed thousands of hip replacements using that technique.
Since 2013, he has also pioneered outpatient total joint replacement, allowing many patients to go home the same day.
Dr. Loucks is a global educator — an international proctor, lecturer, and instructor for minimally invasive hip and knee replacement techniques, sharing knowledge across Europe, Australia, and North America.
Dr. Loucks believes in combining surgical excellence with patient-centered care: precise, evidence-based techniques; individualized treatment plans; and the comfort and convenience of private, high-quality care.
Minimally Invasive Hip & Knee Replacement | Sports Medicine & Arthroscopy | Patient-Specific & Navigated Joint Replacement
Dr. Greenhow is a pioneer in minimally invasive hip and knee replacement in Colorado. Alongside Dr. Loucks, he was among the first in the region to perform anterior-approach, muscle-sparing hip replacements — a technique that offers faster recovery and less soft-tissue disruption.
He is also deeply experienced in sports medicine, arthroscopy, and joint reconstruction — blending athletic-level orthopedic knowledge with advanced joint replacement techniques.
Beyond his clinical work, Dr. Greenhow is a recognized educator and innovator. He serves as a consultant for an international orthopedic implant company, participates in design and development of patient-specific knee systems, and mentors surgeons worldwide on minimally invasive and navigated joint replacement techniques.
Dr. Greenhow emphasizes personalized care and the use of cutting-edge, minimally invasive technology — combining orthopedic reconstruction with principles of sports medicine and function, to help patients return to active and pain-free lives.
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