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BioPro® Modular Thumb Implant The BioPro® Modular Thumb Implant is a simple, durable, metallic hemi-arthoplasty implant prosthesis for the carpal metacarpal joint capable of providing the patient with years of pain relief and restored motion. It is indicated for patients with osteoarthritis, rheumatoid arthritis, and degenerative changes of the first CMC joint associated with pain, dislocations, and deformities. The implant was first designed by orthopedic surgeon Charles O. Townley, MD of Port Huron, MI in the 1990’s. Dr. Townley’s concepts and ideas have been widely accepted in orthopedics for over 50 years. What is this for? The BioPro® Modular Thumb Implant is intended for the treatment of basilar thumb arthritis that has not responded to conservative treatment. Some of the conservative treatments include: anti-inflammatory medications, splinting and injections of cortisone-type medications. What is basilar thumb arthritis? Arthritis is a disease that causes stiffness and inflammation in affected joints. Arthritis can affect any joint in your body, but commonly occurs in the base of the thumb; thus the name basilar thumb arthritis. It is most common in women over the age of 40, but can affect anyone and occur in both thumbs. Two bones form the joint: the proximal metacarpal and the trapezium. This is frequently referred to as the carpal metacarpal joint (CMC joint). The ends of the bones are covered with cartilage, which acts as a cushion, allowing the bones to move smoothly in the joint. Arthritis destroys this cartilage and the bone ends grind together causing pain and inflammation. If left untreated, the smaller bone (the trapezium) may collapse, making straightening of the thumb difficult. What are the symptoms and causes? Most commonly, the main symptom is pain in the base of the thumb (near the wrist) when you lift something with your thumb and finger or pinching type movements, turning a door handle or key, or unscrewing a jar lid. Sometimes you may drop things while trying to grip them or the weather makes your thumb ache. There may be swelling in the joint and the thumb may become stiff or there may be some deformity. There are different causes of basilar thumb arthritis, but it typically occurs because of wear and tear on the thumb joint. Previous injuries or fractures make it more common at a younger age. Repetitive movements such as grabbing, twisting and turning objects may worsen the condition. BioPro® Modular Thumb Implant Questions to Ask Your Doctor Am I a candidate for surgery? How long is the recovery process? What are my alternatives? Do you practice this procedure? Is my arthritis localized to my CMC joint? What are some of the treatments? Usually, your doctor’s diagnosis is based on the description of your pain, by looking at the way your thumb looks and moves, and by taking an x-ray of your hand. The x-ray will show how much damage has been done and what treatment options may help your discomfort. Your doctor may prescribe an anti-inflammatory, place you in a splint for 3-6 weeks or inject the joint with cortisone. If these treatments do not help, you may be sent to see a surgeon to evaluate your discomfort. There are various surgical treatments available such as a fusion of the joint or a tendon graft. Fusion is frequently unacceptable to many patients because of the loss of movement in the joint. The tendon graft can result in thumb shortening, compromised pinch and grip strength and changes in cosmetic appearance. The treatment we are discussing is called an Interpositional Arthroplasty with the BioPro® Modular Thumb Implant. This procedure has the advantage of maintaining movement and a firm foundation for pinch and grip strength maintenance. It also minimizes frequent complications of other procedures; such as dislocations, material failure, and complicated invasive soft tissue reconstructions. What happens during surgery? The bone at the base of the metacarpal is removed and the implant is placed in the damaged joint. A new socket that provides a smooth surface for the implant to move in is formed. Your hand is placed in a cast that keeps the thumb joint in a stable position while your healing begins. You will be in a cast for 4-6 weeks, depending on your healing. After your cast is removed, you may have hand therapy to regain your strength and motion. Most patients have unrestricted activity 8-12 weeks after surgery. Ask your doctor about the BioPro® Modular Thumb Implant today! A recent study, published in May 2012 in Clinical Orthopedics and Related Research, featured the use of the BioPro® Modular Thumb Implant for treatment of trapeziometacarpal osteoarthritis. The study included 159 basal joint hemiarthroplasties to treat osteoarthritis of the trapeziometacarpal joint. Of that, 143 thumbs were available for review. Pain relief occurred in 135 thumbs, function improved in 138 thumbs, 139 thumbs were excellent or good in overall assessment, and 142 thumbs had good or excellent cosmetic appearance. The mean postoperative Buck-Gramcko Score was 49(excellent) and the implant showed a 94% suviorship at a mean follow up of 72.1 months. Contact us at (810)982-7777 or [email protected] The Modular Thumb implant is intended to basal thumb (CMC or carpometacarpal) joint arthritis. The Modular Thumb implant is not recommended for patients who in addition to basal thumb arthritis, have arthritis in adjacent joints, such as the trapezium/scaphoid joint. As with any surgical procedure there are risks associated with hand surgery that you should discuss with your surgeon. These potential risks and complications with products used to treat thumb arthritis include infection at the incision site, pain, inflammation and swelling at implant site, allergic reaction to implant material(s), loosening or dislocation of implant resulting in revision surgery, deterioration or loss of bone, over-production of bone, blood vessel blockage, and negative bodily response due to implant rejection and/or implant wear debris. In addition, your weight, age, and medical history determine your specific risks. Ask your doctor if hand surgery is right for you. Brochure No. 20053