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Theodore K. Gregorius, MD

  • Accepting New Patients
  • Primary Specialty: Orthopedic Surgery
  • Area of Expertise: Knee,  Shoulder,  Sports Medicine,  

About Dr. Theodore K. Gregorius

Dr. Gregorius is a board certified member of the American Board of Orthopaedic Surgery, and a Fellowship-trained Sports Medicine Specialist Orthopaedic Surgeon. He is also a Fellow member of the American Academy of Orthopaedic Surgeons and is an active member of California Orthopaedic Association.

Dr. Gregorius earned his undergraduate degree in History and Philosophy from Pacific Union College Suma Cum Laude while simultaneously completing his premedical curriculum. As an undergraduate student he was recognized with membership in the prestigious Phi Alpha Theta Honor Society. He also served as a student senator, senator pro tempore, and president of his graduating class. Following graduation, Dr. Gregorius attended Loma Linda University School of Medicine where he earned his medical degree.

After graduating from medical school Dr. Gregorius completed a year of surgical training at Loma Linda University Medical Center. Then he went on to complete his Orthopaedic Surgical Residency at the University of Florida Orthopaedic Surgery and Sports Medicine Institute at the University of Florida in Gainesville Florida. Dr. Gregorius received orthopaedic sports medicine experience while providing assistant team coverage to University of Florida Athletics Department and team coverage to local high school athletics throughout Alachua County.

Dr. Gregorius then matriculated to Stanford University/SOAR combined Sports Medicine Fellowship in Palo Alto California. Under the direction of Dr. Michael Dilligham and Dr. Gary Fanton he received sports-specific training in Arthroscopic Surgery in the management of injuries to the Shoulder, Elbow, Hip, and Knee. In addition to participation in an active surgical fellowship training program, Dr. Gregorius provided assistant team coverage to the San Francisco 49ers, Stanford Football, and SAP Open Tennis. During this time he received tutelage on sideline team-specific injuries.

Following completion of his fellowship Dr. Gregorius went on to become a faculty member at Loma Linda University Medical Center and Director of the Orthopaedic Medical Student Program.

Dr. Gregorius currently provides team coverage to the University of California Riverside Athletic Department and the Dodgers single-A affiliate Rancho Cucamonga Quakes.

Education Medical Education - Loma Linda University School of Medicine (MD)
Internship - Loma Linda University Medical Center (General Surgery)
Residency - UF Orthopedics and Sports Medicine Institute (Orthopedic Surgery)
Fellowship - Stanford University School of Medicine (Sports Medicine)
Board Certifications
  • American Board of Orthopedic Surgery
  • Orthopaedic Surgery
Conditions Treated
  • Shoulder Arthritis (Shoulder)
  • LCL Injury (Knee)
  • Shoulder Impingement (Shoulder)
  • Anterior Knee Pain (Knee)
  • Elbow Sports Injuries (Elbow)
  • PCL Injury / Posterior Cruciate Ligament Injury (Knee)
  • Fractured Wrist (Hand & Wrist)
  • Osteonecrosis / Avascular Necrosis (Knee)
  • Ankle Sprain (Sports Medicine)
  • Knee Cartilage Injuries (Knee)
  • AC Joint Separation (Shoulder)
  • Meniscus Tear (Knee)
  • UCL Tear / Ulnar Collateral Ligament Tear (Sports Medicine)
  • Sprains and Strains (Sports Medicine)
  • Osteochondritis Dissecans (Elbow)
  • Strained Hip (Hip)
  • Elbow Fracture / Fractured Elbow (Elbow)
  • Runner's Knee / Chondromalacia Patella (Sports Medicine)
  • Hyperextended Elbow / Hyperextension of the Elbow (Elbow)
  • Shin Splints (Sports Medicine)
  • Pinched Nerve (Elbow)
  • Bicep Tendonitis (Shoulder)
  • Fractures (Sports Medicine)
  • Radial Collateral Ligament Sprain (Elbow)
  • Tennis Elbow / Lateral Epicondylitis (Elbow)
  • Hip Pain (Hip)
  • Dislocated Hip / Hip Dislocation (Hip)
  • Elbow Instability (Elbow)
  • MCL Injury / Medial Collateral Ligament (Sports Medicine)
  • Olecranon Fractures (Elbow)
  • Cartilage Injuries (Sports Medicine)
  • Elbow Arthritis (Elbow)
  • LCL Injury / Lateral Collateral Ligament (Sports Medicine)
  • Mallet Finger (Hand & Wrist)
  • Labral Tear of the Hip or Shoulder (Sports Medicine)
  • Broken Collarbone / Collarbone Injuries (Shoulder)
  • Separated Shoulder (Shoulder)
  • Colles Fracture (Elbow)
  • Dislocated Patella / Sublaxation (Knee)
  • Broken Finger (Hand & Wrist)
  • Strained Knee (Knee)
  • SLAP Lesion Tear / Shoulder Lebrum Tear (Shoulder)
  • Golfer's Elbow (Sports Medicine)
  • Shoulder Instability (Sports Medicine)
  • ACL Tear / Anterior Cruciate Ligament Tear (Sports Medicine)
  • Osteoarthritis of the Knee / Knee Osteoarthritis (Knee)
  • MCL Injury / Medial Collateral Ligament Injury (Knee)
  • Shoulder Bursitis (Shoulder)
  • Tennis Elbow (Sports Medicine)
  • Ulnar Collateral Ligaments Injuries (Elbow)
  • Achilles Tendon Rupture (Foot & Ankle)
  • Hip Impingement (Hip)
  • Bicep Tendon Rupture / Tear (Elbow)
  • PCL Injury / Posterior Cruciate Ligament (Sports Medicine)
  • Dislocated Knee / Knee Dislocation / Kneecap Dislocation (Knee)
  • Broken Hand (Hand & Wrist)
  • IT Band Syndrome / Iliotibial Band Syndrome (Knee)
  • Distal Radius Fracture (Hand & Wrist)
  • Femoral Acetabular Impingement (Hip)
  • Osteoporosis (Shoulder)
  • Throwing Injuries (Shoulder)
  • Synovitis (Sports Medicine)
  • Synovitis of the Hip (Hip)
  • Little League / Elbow or Shoulder (Sports Medicine)
  • Ganglion Cyst (Hand & Wrist)
  • Olecranon Bursitis (Elbow)
  • Metacarpal Fracture (Hand & Wrist)
  • Patellar Tendinitis (Knee)
  • Hamstring Strain (Sports Medicine)
  • Hip Sprain (Hip)
  • Distal Biceps Tendon Rupture / Triceps Rupture (Elbow)
  • Shoulder Instability (Shoulder)
  • Humerus Fracture (Shoulder)
  • Ankle Instability (Foot & Ankle)
  • Distal Biceps Tendon Rupture / Triceps Rupture (Shoulder)
  • Achilles Tendonitis (Foot & Ankle)
  • Shoulder Sports Injuries (Shoulder)
  • Bankart Lesion (Sports Medicine)
  • Trigger Finger (Hand & Wrist)
  • Broken Arm (Elbow)
  • Rotator Cuff Injury / Rotator Cuff Tear (Shoulder)
  • Clavicle Fracture (Shoulder)
  • Tendinosis (Elbow)
  • Dislocated Shoulder / Shoulder Dislocation (Sports Medicine)
  • Joint Pain (Knee)
  • Sprained Elbow (Elbow)
  • De Quervain's Disease (Hand & Wrist)
  • Chondromalacia (Knee)
  • Elbow Tendonitis (Elbow)
  • Separated Shoulder (Sports Medicine)
  • Osgood-Schlatter Disease (Knee)
  • Patellar Tendonitis / Patella Tendonitis (Sports Medicine)
  • Osteochondral Defect (OCD) of Capitellum (Shoulder)
  • Baker's Cyst (Knee)
  • Cubital Tunnel Syndrome (Elbow)
  • Bursitis of the Hip / Hip Bursitis / Trochanteric Bursitis (Hip)
  • Knee Ligament Injuries (Knee)
  • Shoulder Fractures (Shoulder)
  • Runner's Knee (Knee)
  • Osteochondral Defect (OCD) of Capitellum (Elbow)
  • Knee Bursitis / Goosefoot (Knee)
  • Groin Pain (Sports Medicine)
  • Muscle Injury (Knee)
  • Ulnar Nerve Entrapment (Elbow)
  • Ankle Fracture (Foot & Ankle)
  • Dislocated Shoulder / Shoulder Dislocation (Shoulder)
  • Knee Cysts (Knee)
  • Patellofemoral Pain Syndrome (Knee)
  • Snapping Hip (Hip)
  • SLAP Lesion Tear (Sports Medicine)
  • Bicep Tendon Rupture (Sports Medicine)
  • Biceps Tendonitis (Elbow)
  • Knee Tendonitis (Knee)
  • Elbow Osteoarthritis / Osteoarthritis of the Elbow (Elbow)
  • Triceps Tendonitis (Elbow)
  • Lateral Epicondylitis (Elbow)
  • Dislocated Elbow (Elbow)
  • Fibula Fracture (Foot & Ankle)
  • Elbow Contracture (Elbow)
  • Labral Tears of the Shoulder / Bankart Lesion (Shoulder)
  • Labrum Tear (Hip)
  • ACL Injury / Anterior Cruciate Ligament Injury (Knee)
  • Radial Tunnel Syndrome (Elbow)
  • Meniscus Tear / Meniscal Tear (Sports Medicine)
  • Carpal Tunnel (Hand & Wrist)
  • Knee Pain (Knee)
  • Little Leaguer's Elbow (Elbow)
  • IT Band Syndrome / Iliotibial Band Syndrome (Hip)
  • Sports Concusion (Sports Medicine)
  • Strained Elbow (Elbow)
  • Groin Pain (Hip)
  • Elbow Bursitis (Elbow)