The Artelon CMC spacer compared with tendon interposition arthroplasty

The Effect of Thumb Carpometacarpal Joint Corticosteroid Injections on Outcomes Following Arthroplasty

BACKGROUND

Prior studies suggest steroid injections may affect infection rates following thumb carpometacarpal joint (CMCJ) arthroplasty. However, it is unclear whether injections prior to CMCJ arthroplasty affect functional outcomes, primarily Quick Disabilities of the Arm, Shoulder, and Hand (qDASH).

METHODS

We retrospectively identified patients who underwent thumb CMCJ arthroplasty from 2015 to 2019. Patients who had qDASH scores reported preoperatively, and at 5 and 11 months postoperatively were included. Charts were reviewed for the presence or absence of prior corticosteroid injection to the CMCJ and complications. Delta qDASH was calculated by subtracting the patients' postoperative qDASH scores from the preoperative qDASH scores.

RESULTS

In all, 350 CMCJ arthroplasty patients were identified, 177 who had received at least 1 steroid injection and 173 who were steroid-naïve. No significant differences existed in delta qDASH scores postoperatively between the injection and naïve groups at 5 months (28.5 vs 28.6) or 11 months (31.2 vs 31.9). Whereas there were no significant differences in rates of major complications between the 2 groups, minor complications were higher in the injection group (16.4% vs 9.2%). Patients who received more than 3 injections did not have worse 5-month or 11-month delta qDASH scores or complication rates than those with fewer than 3.

CONCLUSIONS

Preoperative CMCJ steroid injection status does not affect major complication rates or functional outcomes following CMCJ arthroplasty. However, injections increase the rate of minor complications. The qDASH and complication rates following CMCJ arthroplasty are not affected by receiving greater than 3 injections preoperatively.

Systematic Review of Thumb Carpometacarpal Joint Hemiresection Interposition Arthroplasty Materials

BACKGROUND

Osteoarthritis of the first carpometacarpal joint is a common condition. Various management options and surgical procedures have been described to treat symptomatic cases. Many systematic reviews examine aspects of thumb carpometacarpal joint osteoarthritis treatment, although none solely examines the outcomes of trapezial partial resection and interposition arthroplasty in stage II to III patients in detail, yet this technique is of growing interest as surgeons seek more nuanced, tailored approaches for osteoarthritis of the first carpometacarpal joint.

METHODS

A systematic review of the thumb carpometacarpal joint hemiresection and interposition arthroplasty was performed with pain assessment as a primary outcome measure and patient-reported outcome measures (PROMs) and reoperation rate as secondary outcome measures. A search was performed between 2004 and 2019 using MEDLINE, Embase, and PubMed. Preferred Reporting Items and Systematic Reviews and Meta-Analyses guidelines were used.

RESULTS

Twenty-nine articles met the inclusion criteria and were included in the final review. Pain relief and improved PROMs were described in all the articles using this technique with all the interposition materials. Materials such as polyurethane urea matrix and poly-l/d-lactide scaffold had higher complication rates. Revision rates varied and were highest with the polyurethane urea matrix.

CONCLUSIONS

This review shows that hemiresection interposition arthroplasty is a useful technique and provides symptomatic benefit in patients with Eaton-Littler stage II and III osteoarthritis. Revision surgery rates due to persistent pain and instability were higher with the use of implants. Larger and long-term studies of this technique using autologous or more bioinert materials and implants are required to assess duration of symptomatic benefit.

A Meta-Analysis of the Outcomes of Ligament Reconstruction Compared to No Reconstruction with or without Tendon Interposition Following Trapeziectomy for Thumb Carpometacarpal Joint Osteoarthritis

Background: The outcomes of trapeziectomy with ligament reconstruction and tendon interposition (LRTI) compared to the trapeziectomy (T) alone or in combination with tendon interposition (TIA) in the treatment of osteoarthritis (OA) of the carpometacarpal joint (CMCJ) of the thumb are still debated. The aim of this study is to conduct a meta-analysis to determine whether the outcomes of LRTI were better compared to T or TIA. Methods: A meta-analysis of randomised trials that included the outcomes of patients with thumb CMCJ OA that underwent LRTI, T or TIA with at least 1 year follow-up. The outcomes included number of patients with pain 1 year after surgery (NPP), Visual Analog Scale for Pain (VAS Pain), key pinch strength, patient reported outcome measurements (PROMs) and number of adverse effect (AEs). The effect was assessed using mean difference for quantitative variables (VAS pain and key pinch), standardised mean difference for PROMs and relative risk for binary variables (NPP and AEs). Results: Seven studies met the inclusion criteria (857 participants: 438 LRTI vs 419 T/TIA). We did not find significant differences between LRTI and T/TIA in NPP, VAS pain, key pinch at 1 year and 5 years or more, PROMs, and AEs at 1 year and at 5 years or more after surgery. Conclusions: The outcomes of LRTI are not superior to T or TIA in the treatment of OA of the thumb CMCJ. Level of Evidence: Level I (Therapeutic).

Trapeziometacarpal osteoarthritis: Arthroscopic hemitrapeziectomy using the Thenar Portal

BACKGROUND

Although the standard 1Radial and 1Ulnar portals allow for visualisation of most of the trapezium articular surface, the proximity of these two portals can often make arthroscopic triangulation and visualisation of the most lateral capsule and joint surface challenging. Despite its already reported advantages in improving visualisation, there is little literature reporting the clinical experience with the Thenar Portal. The purpose of this study is to describe potential complications and the short-term clinical-radiographic outcomes of arthroscopic hemitrapeziectomy using the Thenar Portal in order to determine its safety and efficacy as a standard working portal.

PATIENTS AND METHODS

A retrospective chart review was conducted for all patients diagnosed with first carpometacarpal (CMC) osteoarthritis who were treated surgically with an arthroscopic hemitrapeziectomy. Only patients with stage II or III osteoarthritis and a minimum of 1-year follow-up were included. Twenty-two patients (24 thumbs) with an average age of 62 years met the inclusion criteria. The average follow-up was 52 months. Intra-operative and post-surgical complications were recorded. Objective evaluation consisted of an assessment of range of motion (ROM), grip and pinch strength. Subjective evaluation consisted of a DASH questionnaire and the visual analog scale to score pain at rest, during activities, and function.

RESULTS

There were no intra- or post-surgical complications. In one case, pain persisted with a poor functional result, requiring a revision surgery. Average range of motion (compared with the contralateral) showed a statistically significant improvement in palmar abduction and radial abduction of the CMC joint: 50° vs. 55° (p=0.01235), and 50° vs. 55° (p=0.06009), respectively. There was no statistically significant improvement in thumb adduction, grip strength, or lateral and tip-pinch. All patients achieved retropulsion with their affected thumb. According to the VAS, average rest pain improved from 7.5 to 0 (p<0.001) and from 9 to 0 (p<0.001) during activity. The average final function and QuickDASH were 9 (VAS) and 8, respectively (p<0.001). The average radiographic proximal migration of the first metacarpal was 2.9mm (range: 0.7-5.8mm).

DISCUSSION

Arthroscopic hemitrapeziectomy using the Thenar portal: 1) improved visualisation of the trapeziometacarpal joint, 2) facilitated arthroscopic triangulation, and 3) represents a safe and effective alternative for the treatment of thumb osteoarthritis, with pain relief and function improvement in most patients without a higher risk of complications.

LEVEL OF EVIDENCE

IV.

Long-Term Follow-Up of Synthetic Ligament (Orthotape) Usage in Reconstructive Surgery of the Hand

Purpose

Synthetic ligaments have been widely used in the knees for anterior cruciate ligament reconstruction and in the shoulder rotator cuff repair, but they have been rarely used in the hand. The only reported usage is in the Artelon space for carpometacarpal joint osteoarthritis. We describe our experience using the synthetic ligament or scaffold known as Orthotape (its predecessor was known as the Leeds-Keio ligament) in the hand and fingers.

Methods

We retrospectively reviewed all patients in whom polyester synthetic ligament (Orthotape) was used to reconstruct absent tendons involving both flexor and extensor compartments between 2011 and 2016. The reconstruction procedures were performed as elective surgeries. The tendons were absent due to either trauma or infection. We collected data on demographics, the injury mechanism, prior surgeries, the zone of tendon loss, the presence of skin flaps, and the number of strips of ligament inserted.

Results

We inserted 18 strips of Orthotape in the hands of 9 patients. The follow-up period was 3–7 years, and the mean duration of Orthotape in the hand was 44.1 (range, 1–91) months. Four strips extruded, resulting in a 22.2% extrusion rate. Of the 9 patients, 5 retained the Orthotape within their hand for time periods ranging from 60 months (5 years) to 91 months (7.5 years). The extruded strips were in the superficial areas of the hand. Seven patients had traumatic injuries with varying severity and 2 had infections.

Conclusions

The high extrusion rate of Orthotape discourages its use in the superficial areas of the hand, including flexor and extensor surfaces of the fingers and hand. We recommend its usage in regions with a thick skin cover such as underneath a flap or in deep areas such as the palm. Nevertheless, it remains as a possible option in cases of complex reconstruction with a limited availability of donor tendons.

Type of study/level of evidence

Therapeutic IV.

Reporting Outcomes and Outcome Measures in Thumb Carpometacarpal Joint Osteoarthritis: A Systematic Review

PURPOSE

In the thumb carpometacarpal (CMC) joint osteoarthritis (OA) literature, there is substantial heterogeneity in outcome and outcome measure reporting. This could be rectified by a standardized core outcome set (COS). This study aimed to identify a comprehensive list of outcomes and outcome measures for thumb CMC joint OA, which represents the first step in developing a COS.

METHODS

A computerized search of MEDLINE, EMBASE, Cochrane, and CINAHL was performed to identify randomized controlled trials, as well as observational studies involving at least 50 participants aged greater than 18 years undergoing surgery for thumb CMC joint OA. Reported outcomes and outcome measures were extracted from these trials and summarized.

RESULTS

This search yielded 3,498 unique articles, 97 of which were used for analysis. A total of 33 unique outcomes and 25 unique outcome measures were identified. The most frequently used outcomes were complications (78), postoperative pain (73), radiologic outcomes (64), and grip strength (63). Within each reported outcome, there was substantial variation in how the outcome was measured. Of the 25 unique outcome measures, 10 were validated. Of the remaining 15, 12 were created ad hoc by the author. The Disabilities of the Arm, Shoulder, and Hand questionnaire was the most commonly reported outcome measure (34%).

CONCLUSIONS

There is a lack of consensus on critical outcomes after surgery for thumb CMC joint OA. A standardized COS created by stakeholder consensus would improve the consistency and therefore the quality of future research.

CLINICAL RELEVANCE

This systematic review of outcomes represents the first step in developing a core outcome set for thumb CMC joint OA.

Trends in Trapeziometacarpal Implant Design: A Systematic Survey Based on Patents and Administrative Databases

Hand function is inseparably linked to the condition of the thumb. The trapeziometacarpal (TMC) joint that provides the different movements of opposition is one of the joints most affected by osteoarthritis, which causes an irreversible deformation of the bone. The ideal thumb carpometacarpal implant must restore range of movement, prevent complications, be biocompatible, and have good mechanical properties (ie, low wear, high corrosion resistance, and osteointegration properties where it is anchored in a bone). The integrity of the implant and the surrounding biological structures must be long-lasting and withstand constant stresses induced by the prosthesis. Three main types of implant systems for the thumb are currently clinically available; others are under investigation in human subjects. This systematic review is based on administrative databases, patents, the literature, and information from orthopedic companies. It provides a summary of strategies and design changes and an overview of the biomechanical characteristics of currently available carpometacarpal implants for treating osteoarthritis of the thumb.

Failure Rates of Base of Thumb Arthritis Surgery: A Systematic Review

PURPOSE

The purpose of the current review was to estimate failure rates of trapeziometacarpal (TMC) implants and compare against failure rates of nonimplant techniques for surgical treatment of TMC joint (basal thumb joint) arthritis.

METHODS

A systematic review was conducted to identify articles reporting on thumb implant arthroplasty and on nonimplant arthroplasty techniques for treatment of base of thumb arthritis in the English literature. The collected data were combined to calculate failure rates per 100 procedure-years. Failure was defined by the requirement for a secondary salvage procedure. The failure rates between different implant and nonimplant arthroplasty groups were compared directly and implants with higher than anticipated failure rates were identified.

RESULTS

One hundred twenty-five articles on implant arthroplasty and 33 articles on the outcome of nonimplant surgical arthroplasty of the TMC joint were included. The implant arthroplasty failure rates per 100 procedure-years were total joint replacement (2.4), hemiarthroplasty (2.5), interposition with partial trapezial resection (4.5), interposition with complete trapezial resection (1.7), and interposition with no trapezial resection (4.5). The nonimplant arthroplasty failure rates per 100 procedure-years were: trapeziectomy (0.49), joint fusion (0.52), and trapeziectomy with ligament reconstruction ± tendon interposition (0.23).

CONCLUSIONS

Several implant designs (arthroplasties) had high rates of failure due to aseptic loosening, dislocation, and persisting pain. Furthermore, some implants had higher than anticipated failure rates than other implants within each class. Overall, the failure rates of nonimplant techniques were lower than those of implant arthroplasty.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Dubious space for Artelon joint resurfacing for basal thumb (trapeziometacarpal joint) osteoarthritis. A systematic review

INTRODUCTION

Trapeziometacarpal arthritis is a common and disabling condition. There is no evidence in the literature of superiority of one surgical procedure over others. Several prosthetic implants have been introduced to preserve joint mobility.

SOURCED OF DATA

We searched the on Medline (PubMed), Web of Science and Scopus databases using the combined keywords 'artelon', 'thumb', 'carpometacarpal', 'trapeziometacarpal' and 'rhizoarthrosis'; 11 studies were identified.

AREAS OF AGREEMENT

The use of Artelon implant is not recommended because of its high revision rate and worse outcomes compared to conventional techniques.

AREAS OF CONTROVERSY

Inert materials subjected to compressive and shearing forces could produce debris and subsequent inflammatory response. There is debate in the published scientific literature regarding the role of preoperative antibiotic profilaxis and post-surgery inflammatory response.

GROWING POINTS

Standard techniques such as trapeziectomy alone or combined with interposition or suspensionplasty offer effective treatment for thumb basal joint arthritis.

AREAS TIMELY FOR DEVELOPING RESEARCH

Several prosthetic implants show promising results in terms of pain relief and functional request, but there is a need of long-term randomized controlled trials to demonstrate their equivalence, and eventually superiority, compared to standard techniques.

Developments in trapezium Replacements

The purpose of this update is to report on a variety of topics related to trapezium implants that have been investigated during the past three years. The keyword trapezium implant was utilized to query the PubMed database of the U.S. National Library of Medicine. From the resulting list, papers published from the beginning of January 2012 through the beginning of April 2015 were reviewed. The twenty-three studies identified are reviewed here and referenced at the end of the review. Based on level of evidence criteria for therapeutic studies as adopted by the American Academy of Orthopedic Surgeons, the most frequent level of evidence for reviewed clinical studies was Level IV (13/19 studies), followed by Level III (4/19), and Levels II (1/19) and I (1/19).

[Replacement of the thumb carpometacarpal joint : Current importance of endoprosthetics for operative treatment of rhizarthrosis]

The role of joint replacement in the treatment of osteoarthritis of the thumb carpometacarpal joint is a subject of considerable controversy in the current literature. In German-speaking countries this technique is used much less frequently than resection procedures. Aseptic loosening of the prosthesis is believed to be the major cause of the high failure rates reported for cemented and uncemented types of implants. In this study the different implant designs were evaluated on the basis of the results reported in the international literature. There are only a few studies that cover relatively long follow-up periods and provide convincing results for thumb carpometacarpal joint prostheses in terms of implant survival and function. Aseptic loosening is reported to be the major cause with failure rates of 50 % or more. Although a Norwegian study reported high 5 and 10-year survival rates for various thumb carpometacarpal joint prostheses according to the Norwegian arthroplasty registry, it did not recommend the widespread use of thumb carpometacarpal joint replacement at the present time. In our opinion, joint replacement may be considered as a possible treatment option for advanced osteoarthritis of the thumb carpometacarpal joint but it should not always be recommended because long-term results are inconsistent and similar functional outcomes have been reported for alternative surgical techniques, such as resection arthroplasty.

WITHDRAWN: Surgery for thumb (trapeziometacarpal joint) osteoarthritis

BACKGROUND

Surgery is used to treat persistent pain and dysfunction at the base of the thumb when conservative management, such as splinting, or medical management, such as oral analgesics, is no longer adequate in reducing disability and pain. This is an update of a Cochrane Review first published in 2005.

OBJECTIVES

To assess the effects of different surgical techniques for trapeziometacarpal (thumb) osteoarthritis.

SEARCH METHODS

We searched the following sources up to 08 August 2013: CENTRAL (The Cochrane Library 2013, Issue 8), MEDLINE (1950 to August 2013), EMBASE (1974 to August 2013), CINAHL (1982 to August 2013), Clinicaltrials.gov (to August 2013) and World Health Organization (WHO) Clinical Trials Portal (to August 2013).

SELECTION CRITERIA

Randomised controlled trials (RCTs) or quasi-RCTs where the intervention was surgery for people with thumb osteoarthritis. Outcomes were pain, physical function, quality of life, patient global assessment, adverse events, treatment failure or trapeziometacarpal joint imaging.

DATA COLLECTION AND ANALYSIS

We used standard methodological procedures expected by the Cochrane Collaboration. Two review authors independently screened and included studies according to the inclusion criteria, assessed the risk of bias and extracted data, including adverse events.

MAIN RESULTS

We included 11 studies with 670 participants. Seven surgical procedures were identified (trapeziectomy with ligament reconstruction and tendon interposition (LRTI), trapeziectomy, trapeziectomy with ligament reconstruction, trapeziectomy with interpositional arthroplasty (IA), Artelon joint resurfacing, arthrodesis and Swanson joint replacement). We did not find any studies that compared surgery with sham surgery or surgery with non-surgical interventions.Most included studies had an unclear risk of most biases which raises doubt about the results. No procedure demonstrated any superiority over another in terms of pain, physical function, quality of life, patient global assessment, adverse events, treatment failure (re-operation) or trapeziometacarpal joint imaging. One study demonstrated a difference in adverse events (mild-moderate swelling) between Artelon joint replacement and trapeziectomy with tendon interposition. However, the quality of evidence was very low due to a high risk of bias and imprecision of results.Low quality evidence suggests trapeziectomy with LRTI may not provide additional benefits or result in more adverse events over trapeziectomy alone. Mean pain (three studies, 162 participants) was 26 mm on a 0 to 100 mm VAS (0 is no pain) for trapeziectomy alone, trapeziectomy with LRTI reduced pain by a mean of 2.8 mm (95% confidence interval (CI) -9.8 to 4.2) or an absolute reduction of 3% (-10% to 4%). Mean physical function (three studies, 211 participants) was 31.1 points on a 0 to 100 point scale (0 is best physical function, or no disability) with trapeziectomy alone, trapeziectomy with LRTI resulted in sightly lower function scores (standardised mean difference 0.1, 95% CI -0.30 to 0.32), an equivalent to a worsening of 0.2 points (95% CI -5.8 to 6.1) on a 0 to 100 point scale (absolute decrease in function 0.03% (-0.83% to 0.88%)). Low quality evidence from four studies (328 participants) indicates that the mean number of adverse events was 10 per 100 participants for trapeziectomy alone, and 19 events per 100 participants for trapeziectomy with LRTI (RR 1.89, 95% CI 0.96 to 3.73) or an absolute risk increase of 9% (95% CI 0% to 28%). Low quality evidence from one study (42 participants) indicates that the mean scapho-metacarpal distance was 2.3 mm for the trapeziectomy alone group, trapeziectomy with LRTI resulted in a mean of 0.1 mm less distance (95% CI -0.81 to 0.61). None of the included trials reported global assessment, quality of life, and revision or re-operation rates.Low-quality evidence from two small studies (51 participants) indicated that trapeziectomy with LRTI may not improve function or slow joint degeneration, or produce additional adverse events over trapeziectomy and ligament reconstruction.We are uncertain of the benefits or harms of other surgical techniques due to the mostly low quality evidence from single studies and the low reporting rates of key outcomes. There was insufficient evidence to assess if trapeziectomy with LRTI had additional benefit over arthrodesis or trapeziectomy with IA. There was also insufficient evidence to assess if trapeziectomy with IA had any additional benefit over the Artelon joint implant, the Swanson joint replacement or trapeziectomy alone.

AUTHORS' CONCLUSIONS

We did not identify any studies that compared surgery to sham surgery or to non-operative treatments. We were unable to demonstrate that any technique confers a benefit over another technique in terms of pain and physical function. Furthermore, the included studies were not of high enough quality to provide conclusive evidence that the compared techniques provided equivalent outcomes.

[Current aspects of therapy of rhizoarthrosis]

In patients with carpometacarpal osteoarthritis of the thumb, treatment strategies should be based on functional impairment and pain. Although X‑ray imaging is an integral component of the diagnostics, it is of subordinate importance for the therapy algorithm. Conservative therapy is always the first step in the chain of treatment. The efficacy of non-operative treatment, including intermittent immobilization using splinting and the application of technical assist devices in the daily routine has been proven to achieve pain relief. The intra-articular injection of hyaluronic acid or glucocorticoids is still under debate as some good experiences in routine clinical applications are contrasted by the lack of effectiveness in randomized studies. The indications for operative treatment are fulfilled by persisting pain after exhausting all the options for conservative therapy. In this case isolated trapeziectomy is the method of choice. Suspension (interpositioning) arthroplasty is not associated with improved clinical results. More recent procedures which aim to avoid proximalization by tendon interposition, have not yet shown better clinical outcome compared to trapeziectomy alone.

Increased Complications in Trapeziectomy With Ligament Reconstruction and Tendon Interposition Compared With Trapeziectomy Alone

BACKGROUND

In the treatment of basal joint arthritis of the thumb, recent studies suggest equivalent outcomes with regard to long-term pain, mobility, and strength, in patients undergoing either trapeziectomy alone or trapeziectomy with ligament reconstruction and tendon interposition (LRTI). The goal of this study was to investigate risk factors for complications in carpometacarpal (CMC) arthroplasty.

METHODS

We conducted a retrospective chart review of 5 surgeons at a single institution performing CMC arthroplasties from November 2006 to November 2012. A total of 200 thumbs in 179 patients underwent simple trapeziectomy with or without LRTI and with or without Kirschner wire stabilization, or a Weilby procedure. The average follow-up was 11.6 months (range = 1-69 months). Data collection included sex, age, history of smoking or diabetes, and any other surgeries performed on the hand at the time of arthroplasty. Furthermore, we collected outcomes involving any adverse events, paying attention to those necessitating reoperation, antibiotics, or those who developed complex regional pain syndrome.

RESULTS

Seventy hands had a postoperative complication. Ten of these complications were considered major, defined as requiring antibiotics, reoperation, or other aggressive interventions. On multivariate analysis, risk of total complications was significantly greater only in patients undergoing either trapeziectomy with LRTI or Weilby procedure in comparison with trapeziectomy with K-wire stabilization (odds ratio = 4.30 and 6.73, respectively).

CONCLUSIONS

Patients undergoing trapeziectomy with LRTI or Weilby had a greater incidence of reported complications when compared with trapeziectomy alone. These results suggest an advantage of simple trapeziectomy; however, further study is warranted.

Meniscal allograft arthroplasty for the treatment of trapeziometacarpal arthritis of the thumb

BACKGROUND

Arthritis at the trapeziometacarpal joint of the thumb is common. Several surgical options exist showing favorable results. We report the outcomes after interposition of allograft knee meniscus for thumb trapeziometacarpal arthritis.

METHODS

Twenty-three patients (25 thumbs) had surgery for thumb trapeziometacarpal arthritis using knee meniscal allograft tissue. Eleven thumbs had a minimum follow-up of 24 months, 2 thumbs had a minimum of 12 months, and 12 thumbs had less than 6 months. Disabilities of arm, shoulder, and hand (DASH) questionnaire scores, pain levels, grip strength, pinch strength, range of motion, and radiographic measurements were performed.

RESULTS

Between the preoperative and 24-month follow-up measurements, patient pain levels were reduced. There was a significant improvement in DASH scores. Comparisons between preoperative and postoperative strength measurements showed increase in grip strength and key pinch strength. Trapeziometacarpal subsidence was 5.5 %, and subluxation index measurements decreased 3.9 %. There was no clinical or radiographic evidence of foreign body reaction and no other complications occurred.

CONCLUSIONS

The results of meniscal allograft arthroplasty are comparable to other surgical techniques for trapeziometacarpal arthritis with respect to pain, outcomes, strength, oppositional motion, complications, surgical time, cost, and return to work. The results suggest that meniscal allograft arthroplasty is a viable option in the surgical management of stages II and III arthritis of the TM joint. Further follow-up and clinical studies are warranted.

Long-Term Outcome of Arthroscopic Resection Arthroplasty With or Without Interposition for Thumb Basal Joint Arthritis

PURPOSE

To report results on 144 cases following arthroscopic resection arthroplasty (ARA) with or without interposition for basal joint arthritis.

METHODS

Cases undergoing ARA for thumb carpometacarpal osteoarthritis between 2004 and 2011 were prospectively enrolled (n = 178). Data were collected before surgery and after surgery at 1, 3, 6, and 12 months and annually thereafter. Patients were excluded for less than 1-year follow-up or concomitant procedures that interfered with evaluation of the variable of interest (interposition). Human acellular dermal matrix (GRAFTJACKET) was the most commonly used interposition. Outcomes on 19 cases of interposition using collagen bioimplant (OrthADAPT) and porous polyurethaneurea (Artelon) scaffolds were also reported. Comparative analyses were performed on 52 patients with GRAFTJACKET interposition and on 73 without. Mean follow-up was 7.4 and 5.6 years with and without interposition, respectively. Descriptive statistics were evaluated on all baseline variables. Raw change scores of grip, pinch, and pain outcomes were evaluated. Confounding variables at a significance level of P less than .05 were adjusted for in linear mixed models, and an analysis of covariance was employed through an unstructured type of variance-covariance matrix.

RESULTS

Change scores from baseline to 1 year for the interposition group for pain (numerical rating scale, 0-10), pinch, and grip was -5.8, 3.3, and 7, respectively, and -5.1, 2.1, and 9 for the noninterposition group. Postoperative mean satisfaction was 4.7 and 4.4 for the with- and without-interposition groups, respectively. There were 4 failures with and 2 without interposition. Artelon and OrthADAPT did poorly with unacceptably high failure rates.

CONCLUSIONS

This study suggested that interposition is not necessary following ARA for thumb basal joint arthritis. Because arthroscopic interposition of material contributes to health care costs in terms of patient and facility costs without clear benefit to the patient, routine use of expensive interposition products should be abandoned or carefully evaluated with a prospective randomized controlled trial.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Surgery for thumb (trapeziometacarpal joint) osteoarthritis

BACKGROUND

Surgery is used to treat persistent pain and dysfunction at the base of the thumb when conservative management, such as splinting, or medical management, such as oral analgesics, is no longer adequate in reducing disability and pain. This is an update of a Cochrane Review first published in 2005.

OBJECTIVES

To assess the effects of different surgical techniques for trapeziometacarpal (thumb) osteoarthritis.

SEARCH METHODS

We searched the following sources up to 08 August 2013: CENTRAL (The Cochrane Library 2013, Issue 8), MEDLINE (1950 to August 2013), EMBASE (1974 to August 2013), CINAHL (1982 to August 2013), Clinicaltrials.gov (to August 2013) and World Health Organization (WHO) Clinical Trials Portal (to August 2013).

SELECTION CRITERIA

Randomised controlled trials (RCTs) or quasi-RCTs where the intervention was surgery for people with thumb osteoarthritis. Outcomes were pain, physical function, quality of life, patient global assessment, adverse events, treatment failure or trapeziometacarpal joint imaging. We excluded trials that compared non-surgical interventions with surgery.

DATA COLLECTION AND ANALYSIS

We used standard methodological procedures expected by the Cochrane Collaboration. Two review authors independently screened and included studies according to the inclusion criteria, assessed the risk of bias and extracted data, including adverse events.

MAIN RESULTS

We included 11 studies with 670 participants. Seven surgical procedures were identified (trapeziectomy with ligament reconstruction and tendon interposition (LRTI), trapeziectomy, trapeziectomy with ligament reconstruction, trapeziectomy with interpositional arthroplasty (IA), Artelon joint resurfacing, arthrodesis and Swanson joint replacement).Most included studies had an unclear risk of most biases which raises doubt about the results. No procedure demonstrated any superiority over another in terms of pain, physical function, quality of life, patient global assessment, adverse events, treatment failure (re-operation) or trapeziometacarpal joint imaging. One study demonstrated a difference in adverse events (mild-moderate swelling) between Artelon joint replacement and trapeziectomy with tendon interposition. However, the quality of evidence was very low due to a high risk of bias and imprecision of results.Low quality evidence suggests trapeziectomy with LRTI may not provide additional benefits or result in more adverse events over trapeziectomy alone. Mean pain (three studies, 162 participants) was 26 mm on a 0 to 100 mm VAS (0 is no pain) for trapeziectomy alone, trapeziectomy with LRTI reduced pain by a mean of 2.8 mm (95% confidence interval (CI) -9.8 to 4.2) or an absolute reduction of 3% (-10% to 4%). Mean physical function (three studies, 211 participants) was 31.1 points on a 0 to 100 point scale (0 is best physical function, or no disability) with trapeziectomy alone, trapeziectomy with LRTI resulted in sightly lower function scores (standardised mean difference 0.1, 95% CI -0.30 to 0.32), an equivalent to a worsening of 0.2 points (95% CI -5.8 to 6.1) on a 0 to 100 point scale (absolute decrease in function 0.03% (-0.83% to 0.88%)). Low quality evidence from four studies (328 participants) indicates that the mean number of adverse events was 10 per 100 participants for trapeziectomy alone, and 19 events per 100 participants for trapeziectomy with LRTI (RR 1.89, 95% CI 0.96 to 3.73) or an absolute risk increase of 9% (95% CI 0% to 28%). Low quality evidence from one study (42 participants) indicates that the mean scapho-metacarpal distance was 2.3 mm for the trapeziectomy alone group, trapeziectomy with LRTI resulted in a mean of 0.1 mm less distance (95% CI -0.81 to 0.61). None of the included trials reported global assessment, quality of life, and revision or re-operation rates.Low-quality evidence from two small studies (51 participants) indicated that trapeziectomy with LRTI may not improve function or slow joint degeneration, or produce additional adverse events over trapeziectomy and ligament reconstruction.We are uncertain of the benefits or harms of other surgical techniques due to the mostly low quality evidence from single studies and the low reporting rates of key outcomes. There was insufficient evidence to assess if trapeziectomy with LRTI had additional benefit over arthrodesis or trapeziectomy with IA. There was also insufficient evidence to assess if trapeziectomy with IA had any additional benefit over the Artelon joint implant, the Swanson joint replacement or trapeziectomy alone.We did not find any studies that compared any other combination of the other techniques mentioned above or any other techniques including a sham procedure.

AUTHORS' CONCLUSIONS

We did not identify any studies that compared surgery to sham surgery and we excluded studies that compared surgery to non-operative treatments. We were unable to demonstrate that any technique confers a benefit over another technique in terms of pain and physical function. Furthermore, the included studies were not of high enough quality to provide conclusive evidence that the compared techniques provided equivalent outcomes.

The use of the Artelon CMC Spacer for osteoarthritis of the basal joint of the thumb

INTRODUCTION

Favorable clinical outcomes have been reported with the Artelon CMC Spacer, however, several studies have documented complications with the device.

PURPOSE OF THE STUDY

The purpose of this study is to review a single surgeon's experience with the Artelon CMC Spacer for the treatment of basal joint arthritis of the thumb.

METHODS

Five thumbs in 6 patients with symptomatic osteoarthritis of the thumb carpometacarpal (CMC) joint were treated with the Artelon CMC Spacer. The mean age of the patients was 60.8 years old. Patients were followed for a mean of 39.3 months (6-63) post-operatively.

RESULTS

Complications occurred in 4 of the 6 thumbs and half of the thumbs required at least one secondary operative procedure. A documented foreign-body reaction was present in 2 of the 6 thumbs.

DISCUSSION

The Artelon CMC Spacer is an interposition material that acts as a biologic spacer for arthritic joints while maintaining mechanical strength.

CONCLUSIONS

Due to an unacceptably high complication rate, we no longer use the Artelon CMC Spacer for the management of basal joint arthritis of the thumb.

LEVEL OF EVIDENCE

4.

A scoping review of disabilities of the arm, shoulder, and hand scores for hand and wrist conditions

PURPOSE

To evaluate the variability of reported baseline Disabilities of the Arm, Shoulder, and Hand (DASH) scores for non-acute hand and wrist conditions. We hypothesized that DASH scores for evaluation of hand and wrist pathology would provide a map of scores that would correspond to severity. In addition to providing a catalog of DASH scores for various upper extremity pathologies, we hypothesized that this review would support the validity of the DASH instrument.

METHODS

A literature search was performed using 3 databases (MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials) from the earliest available date through January 1, 2013. Search terms included "DASH" and "hand" and combinations of conditions found in the initial search. The search was restricted to studies with baseline DASH scores and DASH scores for isolated conditions, and written in the English language.

RESULTS

Our search identified 1,770 citations; 136 full-text articles were reviewed and 85 studies were included in the scoping review. This provided 100 DASH scores mapped for 24 different diagnoses. Most articles (67%) included chronic conditions for inflammatory or degenerative pathologies rather than posttraumatic disorders. Posttraumatic DASH score reporting ranged from 4 months to 11 years after injury, and final outcome scores varied among studies assessing the same pathology. The greatest variation and highest scores were for de Quervain tendinitis (range, 29-93) and scapholunate advance collapse (range, 17-89). These scores indicated higher disability in de Quervain tendinitis and wrist osteoarthritis compared with conditions such as thumb amputation and upper extremity replantation.

CONCLUSIONS

Substantial variation in the DASH scores and methodology was found and indicates a need for further study of the DASH to allow for standardized interpretation.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic III.

Advances in hand and wrist arthroscopy

Hand and wrist arthroscopy has gained popularity over the past few decades. Arthroscopy is a valuable diagnostic tool in cases where clinical and radiographic findings do not show a clear picture of the patient's pathologic condition. Arthroscopy also allows care providers to perform therapeutic interventions in a less invasive manner than would have been possible with a standard open approach. Over the past three decades, there have been substantial advances in the techniques and outcomes in hand and wrist arthroscopy. With this article, the authors aim to introduce the application of newer arthroscopic techniques in the hand and wrist that may be of diagnostic and/or therapeutic value.

Does arthroscopic débridement with or without interposition material address carpometacarpal arthritis?

BACKGROUND

Thumb carpometacarpal (CMC) joint arthritis is a common problem in clinical practice with a variety of treatment options. Arthroscopic procedures can preserve all or part of the trapezium in the setting of treatment of basilar joint arthritis, and such procedures (even without stabilization or ligament reconstruction) have high reported success rates. However, little is documented about the limitations of these procedures in terms of patient selection, the optimal type of interposition, if any, and rehabilitation.

QUESTIONS/PURPOSES

A systematic review was performed to determine the influence of (1) interposition material (manufactured, biological, or none); and (2) patient-related factors (including metacarpophalangeal joint hyperextension, ligamentous laxity, and severity of arthritis) on pain, functional scores, and postoperative complications unique to each approach.

METHODS

A systematic review of the English language literature regarding thumb basilar joint arthritis and arthroscopic partial trapeziectomy or débridement was performed. Those procedures including ligament reconstruction or stabilization were excluded.

RESULTS

Biological materials and no interposition were both associated with satisfactory improvement and low rates of complications; complication rates with synthetic materials were higher. Eaton Stages I to III were treated successfully with this technique. The effect of scaphotrapeziotrapezoid (STT) changes was variably described across series. In most series, metacarpophalangeal hyperextension did not seem to have an adverse effect on outcomes, although these patients were excluded in some series.

CONCLUSIONS

Arthroscopic débridement with or without interposition can be used for treatment of Eaton Stages I to III CMC osteoarthritis with satisfactory outcomes. Some series suggest satisfactory outcomes in the setting of STT changes and metacarpophalangeal hyperextension.

First metacarpal resurfacing with polyvinyl alcohol implant in osteoarthritis: preliminary study

Osteoarthritis of first carpometacarpal (CMC) joint is a condition that is frequently encountered in hand surgery. If conservative treatment fails, several surgical procedures are available ranging from arthroscopic debridement to total joint arthroplasty. This study focuses on a new resurfacing technique for the base of the first metacarpal using a polyvinyl alcohol hydrogel implant. Our preliminary study found good clinical outcomes and no inflammatory reaction after a follow-up of 30 months. However prospective studies with a longer follow-up and more patient are needed to confirm these results.

Evidence-based medicine: thumb carpometacarpal arthroplasty

LEARNING OBJECTIVES

After studying this article, the participant should be able to: 1. Recount the epidemiology of basilar joint arthritis. 2. Understand how the anatomy and kinematics of this joint contribute to the development of the disease process. 3. Combine patient history, clinical examination, and radiographic findings to formulate a diagnosis and staging of the arthritis. 4. Incorporate conservative management into the patient treatment plan to aid in determining a patient's surgical candidacy. 5. Comprehend the basic principles of available surgical options, potential complications, and evidence pertaining to surgical outcome.

SUMMARY

This article has been prepared to accompany practice-based assessment with ongoing surgical education for the Maintenance of Certification for the American Board of Plastic Surgery. It is structured for physicians to comparatively evaluate their care of a patient with arthritis of the thumb carpometacarpal joint.

Trapeziometacarpal narrow pseudarthrosis: a new surgical technique to treat thumb carpometacarpal joint arthritis

We describe a technique that arose from the observation of the clinical outcome of failed arthrodeses of the thumb carpometacarpal joint. In these cases a pseudoarthrosis developed which, surprisingly, rarely lead to a poor clinical outcome. Thus we developed a simple technique which deliberately caused the formation of a narrow pseudoarthrosis in the carpometacarpal joint. We present a retrospective review of 248 consecutive patients treated for Eaton stages II and III osteoarthritis. We observed a statistically significant improvement in mean appositional and oppositional pinch strength, mean DASH score (63.8 pre-operatively to 10.5 at final follow-up), and the mean pain score (8.3 to 0.2). We conclude that trapeziometacarpal limited excision arthroplasty is a simple and reliable alternative to existing surgical techniques for treating Stage II or III thumb carpometacarpal joint arthritis.

Porous polyurethaneurea (Artelon) joint spacer compared to trapezium resection and ligament reconstruction

PURPOSE

To examine outcomes and complications of the porous polyurethaneurea (Artelon; Small Bone Innovations, Morrisville, PA) spacer compared to traditional surgical treatment of trapeziectomy with ligament reconstruction and tendon interposition (LRTI).

METHODS

A retrospective chart review was undertaken of patients with carpometacarpal (CMC) arthritis who had either placement of an Artelon spacer or LRTI. Patients were brought back to clinic for interview and functional testing. Pain was graded using a visual analog scale. Grip and pinch strength, as well as range of motion at the first CMC joint, were measured. Nine-hole peg, Moberg pickup, and Jebson-Taylor tests were performed. Research and Development 36, Michigan Hand Outcomes, and Quick Disabilities of the Arm, Shoulder, and Hand questionnaires were administered.

RESULTS

Thirty-eight patients received Artelon implants into the CMC joint, and 6 were lost to follow-up. Twelve of 32 patients (37%) required revision surgery with removal of implant and salvage arthroplasty. Twenty patients with nonrevised Artelon implants were compared with 10 patients who received 13 LRTI procedures. Patients with Artelon had significantly less pain improvement compared to those receiving the LRTI procedure. In addition, satisfaction was significantly decreased. There was no significant difference in any other functional or quality of life measures.

CONCLUSIONS

In our practice, use of the Artelon joint spacer resulted in an explantation rate of 37%. Due to these findings, we have abandoned its use for treatment of basilar thumb osteoarthritis. In contrast to previous studies, pain and satisfaction are worse in patients with intact Artelon spacers than those who had received LRTI.

Percutaneous injection of autologous, culture-expanded mesenchymal stem cells into carpometacarpal hand joints: a case series with an untreated comparison group

In the present study, we describe six patients who received autologous mesenchymal stem cell (MSC) therapy for symptomatic carpometacarpal (CMC) joint and hand osteoarthritis (OA). Six patients who received injections of adult autologous culture expanded MSCs in their thumb CMC joints were followed for 1 year posttreatment, and matched with four procedure candidates who remained untreated. We observed positive outcomes in the treatment group for both symptoms and function related to the OA, compared with a reported worsening among the untreated controls. While these results should be interpreted with caution because of the small number of treated subjects and lack of placebo control and randomization, we find sufficient evidence for further investigation of MSC therapy as an alternative to more invasive surgery in patients with OA of the hand.

Clinical Evaluation of the Articulinx Intercarpometacarpal Cushion for the First CMC Joint: A Feasibility Study

Background The Intercarpometacarpal Cushion (ICMC; Articulinx, Cupertino, CA, USA) is an implantable spacer designed as a less invasive surgical treatment for osteoarthritis (OA) of the first carpometacarpal joint (CMC-1). Description of Technique Following local anesthesia and exposure of the joint capsule the ICMC, attached to a needle and suture tethers, is guided into the joint space under fluoroscopic visualization through a dorsal approach. The needle is pulled through the thenar eminence to the opposite side of the hand and, once proper device placement is confirmed, cut free and the joint capsule closed. Patients and Methods Eight female patients (median age 56 years; range, 42-83) were treated and followed for 6 to 24 months. Safety of the implant procedure was evaluated intraoperatively. Pain, joint function, and strength were evaluated at 6 weeks, 3, 6, 12 and 24 months with a Visual Analog Scale (VAS) for pain, the QuickDASH inventory, Canadian Occupational Performance Measure (COPM), and pinch and grip strength measurements. Results At 2 years (n = 6), mean VAS pain scores decreased from 6.3 (± 1.5) to 2.2 (± 1.1) (p < 0.001), mean QuickDASH scores improved from 47 (± 15) to 31 (± 11) (p < 0.10), mean COPM performance scores improved from 5.0 (± 1.2) to 5.5 ( ± 1.3) (p = NS). Mean pinch and grip strength measurements also improved compared with baseline. No serious adverse events occurred. Two device removals occurred, associated with a traumatic event and Stage IV OA with device displacement, at 6 and 9 months respectively. Conclusion The ICMC can be implanted safely. Effectiveness needs to be confirmed in future studies.

PyroCarbon implant hemiarthroplasty for trapeziometacarpal arthritis

The trapeziometacarpal joint is commonly affected by degenerative arthritis, presenting with pain, stiffness, and swelling at the base of the thumb. When conservative treatment fails, surgical intervention may be warranted based on clinical and radiologic staging as well as patient demand. The concept of replacing the trapeziometacarpal joint remains attractive because of the decreased pain and stiffness, prevention of thumb shortening, and earlier recovery of strength seen with implant arthroplasty. A technique of using a cementless PyroCarbon hemiarthroplasty implant that allows excellent range of motion and decreased postoperative stiffness and pain is presented, with a focus on dorsal capsular reconstruction to prevent subluxation of the implant.

Trapezium prosthetic arthroplasty (silicone, Artelon, metal, and pyrocarbon)

Trapezium prosthetic arthroplasty has been utilized to treat basal joint arthritis for nearly five decades in an attempt to mitigate some of the potential disadvantages of trapeziectomy while preserving range of motion. Implant arthroplasty seeks to preserve joint biomechanics, avoids metacarpal subsidence, and should provide immediate stability. These benefits may lead to improvements in strength, durability, and a decrease in metacarpophalangeal joint hyperextension which can occur subsequent to metacarpal shortening. First generation implants were primarily silicone trapezial spacers. While the use of these implants has been curtailed by their association with silicone synovitis, they still remain an option for low demand, rheumatoid patients. More recently developed synthetic spacers such as Artelon interposition arthroplasties have had results inferior to more established procedures including trapeziectomy. A variety of metal total joint prostheses have been developed and some of the more recent designs have shown good short-term outcomes. There are a number of different pyrocarbon implants that have become more recently available which range from trapezial substitution to non-anatomic hemiarthroplasty. Pyrocarbon arthroplasty offers a number theoretical advantages however early results have been mixed and further long term data is required.

Treatment of thumb carpometacarpal arthritis with arthroscopic hemitrapeziectomy and interposition arthroplasty

The carpometacarpal joint of the thumb is a common site of degenerative arthritis. Several surgical treatments exist, but arthroscopic management offers the potential benefit of earlier recovery. The current study evaluated the early clinical outcomes of a procedure involving arthroscopic hemitrapeziectomy with Artelon spacer (Artimplant, Västra Frölunda, Sweden) interposition arthroplasty into the newly created carpometacarpal space.A chart review of 9 patients treated with thumb carpometacarpal arthroscopic hemitrapeziectomy and Artelon spacer interposition arthroplasty between September 2005 and January 2009 was performed for postoperative complications, range of motion, and pinch strength (percentage of the contralateral limb). Subjective outcomes were analyzed by the Quick Disabilities of the Arm, Shoulder, and Hand questionnaire and the Patient-rated Wrist Evaluation. Mean follow-up was 23.4 months (range, 13-33 months). All patients maintained full range of motion. By the 1-year follow-up, mean pinch strength returned to 59%± 19.1% of the contralateral limb strength. The Quick Disabilities of the Arm, Shoulder, and Hand and the Patient-rated Wrist Evaluation scores were 12.3 ± 7.6 and 26.8 ± 23.5, respectively. No significant complications occurred, and 1 patient with symptoms of synovitis was successfully treated with a corticosteroid injection. This study revealed excellent short-term results at the minimum 1-year follow-up for a less invasive treatment option that is appropriate for select patients with moderate thumb carpometacarpal arthritis (Eaton stages 2 and 3). The authors demonstrated a comparably good outcome of arthroscopic hemitrapeziectomy with Artelon spacer interposition arthroplasty with no evidence of foreign-body reaction. The authors also demonstrated the potential role of corticosteroid injections in the setting of a postoperative inflammatory reaction.

Use of Condition-Specific Patient-Reported Outcome Measures in Clinical Trials among Patients with Wrist Osteoarthritis: A Systematic Review

Background. This paper aimed to identify condition-specific patient-reported outcome measures used in clinical trials among people with wrist osteoarthritis and summarise empirical peer-reviewed evidence supporting their reliability, validity, and responsiveness to change. Methods. A systematic review of randomised controlled trials among people with wrist osteoarthritis was undertaken. Studies reporting reliability, validity, or responsiveness were identified using a systematic reverse citation trail audit procedure. Psychometric properties of the instruments were examined against predefined criteria and summarised. Results. Thirteen clinical trials met inclusion criteria. The most common patient-reported outcome was the disabilities of the arm, shoulder, and hand questionnaire (DASH). The DASH, the Michigan Hand Outcomes Questionnaire (MHQ), the Patient Evaluation Measure (PEM), and the Patient-Reported Wrist Evaluation (PRWE) had evidence supporting their reliability, validity, and responsiveness. A post-hoc review of excluded studies revealed the AUSCAN Osteoarthritis Hand Index as another suitable instrument that had favourable reliability, validity, and responsiveness. Conclusions. The DASH, MHQ, and AUSCAN Osteoarthritis Hand Index instruments were supported by the most favourable empirical evidence for validity, reliability, and responsiveness. The PEM and PRWE also had favourable empirical evidence reported for these elements. Further psychometric testing of these instruments among people with wrist osteoarthritis is warranted.

A retrospective multicenter study of the Artelon® carpometacarpal joint implant

BACKGROUND

This study aims to evaluate patient outcomes associated with use of the Artelon® Spacer for the treatment of arthritis of the carpometacarpal joint (CMCJ) of the thumb.

METHODS

Patients with Eaton stage I, II, or III carpometacarpal (CMC) joint arthritis and disabling pain that had failed conservative treatment were evaluated at 12, 36, and 48 months postsurgery for changes in pinch, patient satisfaction, pain, range of motion, grip strength, grind test, operative time, and X-ray evidence of subsidence.

RESULTS

Complete data was available for 46 subjects and 49 thumbs. A statistically significant improvement in pain when subjected to a first CMC joint grind test, CMCJ stability and patient perception of hand and wrist function following implant insertion was seen. Patient-oriented outcomes showed statistically significant improvement in the Disabilities of the Arm, Shoulder, and Hand; pain; pinch and grip strength; and range of motion. X-ray analysis revealed that none of the distributions of measures of osteophytes, subluxation, and joint space narrowing showed statistically significant change. Bone erosion/remodeling changes of the first metacarpal were statistically significant.

CONCLUSIONS

At a follow-up period of 4 years, patients had measured improvement as well as positive self-reported functional improvements following Artelon® implant insertion for the treatment of arthritis of the thumb CMCJ.

Trapezio-metacarpal arthritis: The price of an opposable thumb!

Trapezio-metacarpal arthritis is the most common arthritic problem of the hand for which patients seek surgical treatment. The current article reviews the etio-pathogenesis, epidemiology, classification and management of this widespread problem. The anatomy and unique biomechanics of this joint are also reviewed. In addition, the article provides a detailed description of our preferred method of trapezio-metacarpal arthroplasty.

Carpometacarpal and scaphotrapeziotrapezoid arthritis: arthroscopy, arthroplasty, and arthrodesis

Osteoarthritis of the first carpometacarpal joint is the second most common site of osteoarthritis in humans. Symptomatic isolated scaphotrapeziotrapezoid joint arthritis, though less common overall, is also frequently observed by the hand surgeon. Investigations on the etiology, pathophysiology, natural history, outcomes of traditional treatments, and new forms of surgical techniques have been attracting more interest in the field of hand surgery. The goal of this article is to sort through the current prevailing ideas using recently available literature and to offer a concise, updated guide to further enhance the understanding of thumb carpometacarpal and scaphotrapeziotrapezoid arthritis.

Use of Artelon(®) Cosmetic in soft tissue augmentation in dentistry

Background

Soft tissue augmentation is a widely used procedure in partially and fully edentulous patients to increase soft tissue volume. Polyurethanes have been used for scaffolds in a variety of implantable devices. Artelon^® is a degradable polyurethane that has been manufactured as fibers, films, and porous scaffolds to be used for various purposes. In this review, the characteristics of Artelon are described, and its clinical applications in orthopedics, dermatology, cardiovascular medicine, and dentistry are also discussed.

Methods

A Medline (PubMed) search was conducted, and articles published in English were included. Keywords, including “Artelon”, “polyurethanes”, “soft tissue augmentation”, “biocompatibility”, “resorption”, “mechanical stability”, and “complications” were used in different combinations. Titles and abstracts were screened, and full text article analyses were performed.

Results

Most of the studies reported orthopedic, dermal, and myocardial applications. There were only a few reports related to dental and implant applications. Artelon has been successfully used for reinforcement of soft tissues, including the rotator cuff, Achilles, patellar, biceps, and quadriceps tendons in orthopedic surgery, and is used clinically for the treatment of osteoarthritis in the hand, wrist, and foot. One type of Artelon material, Artelon Cosmetic, has been used in the dental field to increase soft tissue volume, and stable results are achieved for up to 6 months. This material is reported to be easily handled when cut to the desired shape, with little additional time needed for manipulation during surgery, eliminates the need for connective tissue autografts, and thereby decreases patient morbidity and postoperative discomfort, with increased likelihood of a positive subjective outcome.

Conclusion

Artelon may be applied in the dental field to increase soft tissue volume. Further studies of various applications in dentistry with long-term results are needed to confirm the safety and efficacy of this material before it can be used on a routine basis in dentistry.

Foreign body reaction associated with Artelon: report of three cases

The Artelon carpometacarpal joint implant is a degradable interposition arthroplasty spacer intended for use in thumb carpometacarpal joint osteoarthritis. Recently there have been reported cases of foreign body reaction attributed to the Artelon implant, which raise concerns about the use of this implant. The implant's manufacturers claim excellent biocompatibility. We report 3 cases of persistent pain after thumb carpometacarpal joint arthroplasty performed using Artelon implants. In all 3 cases that required removal of the Artelon implant and trapeziectomy to achieve subsequent symptom relief, foreign body-type reaction associated with the Artelon was seen histologically.