TopicExplaining What A Foot Callus Is And What To Do If You Have Them
One of the first implant designs, and one that is still inLiposomal Maca use today by some surgeons, is essentially a hinge with stems that run into the 1st metatarsal and proximal phalanx, respectively. This implant is made of a firm silicone gel, that is stiff enough to withstand the forces acting on the big toe, and flexible enough to allow for a bending motion at the hinge. This implant has been used for nearly forty years, and has a fairly decent success rate. The nature of the silicone gel material can lead to complications, including silicone degeneration and depositing of particles in the surrounding soft tissue, as well as stem fracturing and implant slippage if not tightly seated in the bone due to stem hole widening.
Perhaps the most popular implant design today is historically the earliest implant. This implant design has been in use since the 1950's, and has proven itself durable, effective, and generally complication free when properly installed. This implant design replaces the 'cup' of the proximal phalanx part of the joint, and consists of a concave plate attached to a stem that is impacted into the bone. This implant fits in tightly, and has a thin profile so that not a lot of anatomic bone has to be removed in order to fit it into the joint. The original design is still in use, and many companies have implants that are very similar in shape and function. This implant, while it replaces the only one side of the joint, is very effective at restoring joint motion without pain, even if the other side of the joint has a large amount of cartilage loss as well. Complications can include extended joint swelling follow the surgery for awhile, as well as implant slippage out of position or toe bone fracturing in a very low number of cases. This author has personally used this design for years with good success.