Double trapeziometacarpal and scaphotrapeziotrapezoidal pyrocarbon interposition implants for pantrapezial arthritis: Midterm results and surgical technique

Functional outcome of trapeziometacarpal prostheses in pan-trapezial osteoarthritis

Trapeziometacarpal osteoarthritis is frequently associated with scaphotrapeziotrapezoid osteoarthritis. Long-term outcomes have not been reported for trapeziometacarpal protheses in patients with radiological pan-trapezial osteoarthritis that is symptomatic only in the trapeziometacarpal compartment. The primary objective of this retrospective multicenter multi-operator study was to evaluate the effectiveness of trapeziometacarpal arthroplasty for pain relief in patients with radiographic pan-trapezial osteoarthritis without symptomatic scaphotrapeziotrapezoid involvement. A total of 70 thumbs in 67 patients were evaluated by a single independent operator at a mean follow-up of 58 months. Scaphotrapeziotrapezoid osteoarthritis severity on Crosby score was stage II in 84% of patients and stage III in 16%. Mean pain score on visual analog scale decreased from 7.7 preoperatively to 1.3 at last follow-up. There were no reoperations at last follow up. These results suggest that, in patients with radiological pan-trapezial osteoarthritis without symptomatic involvement of the scaphotrapeziotrapezoid joint, a trapeziometacarpal prothesis yields good medium-term clinical outcomes. LEVEL OF EVIDENCE: III.

Arthrodesis or arthroplasty, complete or partial: where are we at in the 21st century?

Osteoarthritis of the wrist presents complex surgical challenges. A wide variety of surgical options are available when conservative management fails to provide adequate pain relief. Despite advancements in management, such as modifications of partial wrist arthrodesis techniques and increasing use of total wrist replacements, in most scenarios there is no single preferred option. The surgeon's role is crucial in assessing the patient and creating a bespoke treatment strategy that will provide an optimal outcome. This article presents an approach to management of the degenerate wrist based on current evidence.

Thumb Carpometacarpal Implant Arthroplasty

Thumb carpometacarpal implant arthroplasty aims to preserve thumb length and motion and to provide pain relief and functional recovery after a short postoperative time. For several decades, implant arthroplasty has been performed with total trapeziometacarpal joint prosthesis using the concept of "ball-and-socket" joint. More recently, pyrocarbon implants used as hemiarthroplasty or interposition arthroplasty have been proposed. Whatever the type of arthroplasty used, the surgical technique must be precise and may require a learning curve. Implant arthroplasty has proven that in the medium and long-term, it may be considered as a valid and reliable alternative to trapeziectomy.

Pyrocarbon implants for the basal thumb arthritis

Silicone implants for the treatment of basal thumb arthritis were first proposed in the 1970's by Swanson. They became extremely popular and despite good functional results, the high rate of complications such as instability, material breakage and foreign body reactions led to them being progressively abandoned by most surgeons. Pyrocarbon implants were introduced at the beginning of the 2000's. A large range of different implant models that can be used for either hemiarthroplasty or interposition arthroplasty. For some implants, a supplemental ligamentoplasty procedure is required to avoid instability. Miniaturization of some implants provides new options for minimally invasive surgery, which is relevant in low and medium grades of osteoarthritis, especially for young, active patients. Medium- and long-term follow-up have now been reached by some pyrocarbon interpositions. Their results confirm that these implants are a reliable alternative to other techniques. This paper focuses on the surgical techniques and outcomes of pyrocarbon implants for the treatment of basal thumb arthritis. It is based on published data and the author's experience.