Abstract
The dual mobility concept currently represents the newest generation of thumb carpometacarpal prostheses. The aim of this study was to evaluate the short-term outcomes of TOUCH® prosthesis. From September 2019 to July 2020, 40 prosthesis were implanted in 37 patients suffering from symptomatic stage III osteoarthritis. All included patients with a median age of 57.7 (IQR: 13.6) finished the systematic follow-up regimen (4, 8, 16 weeks, 6, and 12 months postoperatively). All parameters significantly improved (p < 0.0001) compared to the preoperative status. At 1 year follow-up, median DASH Scores decreased from 54 (IQR 22) to 12 (IQR 28) and pain levels improved from 8 (IQR 2) to 1 (IQR 2). Moreover, key-pinch strength increased from 3.8 (2.0) to 5.8 (2.5), while palmar abduction, radial abduction, and opposition also significantly improved. 35/37 patients were satisfied with the functional outcomes. We observed 10 complications, of which 6 were tendon-related issues, and 2 were due to an inappropriate choice of neck size. We could detect one dislocation but no evidence of cup loosening, tilting or subsidence in any patient. Despite the occurrence of some complications, we recommend implantation of this prosthesis type due to favorable clinical and radiological performance.
Highlights
Published: 10 September 2021The thumb carpometacarpal (CMC) joint is the second most common location in the hand affected by primary osteoarthritis (OA) [1]
I.e., trepeziectomy or arthrodesis, are still broadly used, the most recent literature on the thumb CMC joint focuses on the performance of total joint arthroplasty (TJA) [2,3]
The most recent innovation in thumb CMC TJA is the integration of dual mobility
Summary
Published: 10 September 2021The thumb carpometacarpal (CMC) joint is the second most common location in the hand affected by primary osteoarthritis (OA) [1]. A widespread use of TJA is currently hampered by a persistent association with its initial difficulties, i.e., high complication rates caused by aseptic loosening, subsidence, subluxation and dislocation [4]. To overcome these initial difficulties of first-generation cemented prostheses [5], cementless prostheses with various cup and stem designs as well as with both metal-metal and metal-polyethylene bearings have been developed [2]. The most recent innovation in thumb CMC TJA is the integration of dual mobility This concept was initially developed by Gilles Bousquet in 1976 for total hip arthroplasty: The association of two articulating surfaces in the prosthesis cup intends
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