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The "Thumbs-up" sign and trapeziometacarpal joint injection: a useful clinical indicator.

ABSTRACT: Several clinical studies investigating the accuracy and efficacy of trapeziometacarpal injection exist. Some studies utilize anatomical landmarks for proper injection placement while others utilize modalities including ultrasound and fluoroscopy. The changes of limb position that occur at the time of intra-articular injection can provide valuable visual and tactile feedback to the clinician. The purpose of this study is to investigate the occurrence of the "Thumbs-up" sign with injection of the thumb trapeziometacarpal joint as a useful and reliable clinical indicator of intra-articular trapeziometacarpal injection and correlate level and duration of pain relief.Trapeziometacarpal joint injections were performed on twenty-seven thumbs utilizing anatomic landmarks. At the time of injection, the presence or absence of the "Thumbs-up" sign was noted, and needle location was verified after injection with orthogonal mini-C arm fluoroscopic images. Visual analog pain scale scores were obtained pre-injection and by follow-up telephone calls at 1 week, 6 weeks, and 3 months post injection.Twenty-four of twenty-seven injections demonstrated a positive "Thumbs-up" sign. There were three negative "Thumbs-Up" injections. The thumbs-up sign demonstrated a 92.3 % sensitivity. Eighteen of twenty-seven thumbs had sustained relief at 3 months post injection.The "Thumbs-up" sign is a practical clinical tool that gives the practitioner important visual feedback at the time of injection. Patient relaxation and joint compliance are limiting factors. The "Thumbs-up" sign is an inexpensive indicator of successful intra-articular injection and may obviate the need and expense of advanced imaging modalities at the time of injection.

SUBMITTER: Erpelding JM

PROVIDER: S-EPMC4447649 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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The "Thumbs-up" sign and trapeziometacarpal joint injection: a useful clinical indicator.

Erpelding Jason M JM Shnayderman Dimitryi D Mickschl Dara D Daley Roger A RA Grindel Steven I SI

Hand (New York, N.Y.) 20150601 2

<h4>Background</h4>Several clinical studies investigating the accuracy and efficacy of trapeziometacarpal injection exist. Some studies utilize anatomical landmarks for proper injection placement while others utilize modalities including ultrasound and fluoroscopy. The changes of limb position that occur at the time of intra-articular injection can provide valuable visual and tactile feedback to the clinician. The purpose of this study is to investigate the occurrence of the "Thumbs-up" sign wit ...[more]

PMID: 26034462

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Project description:BackgroundTrapeziometacarpal (TMC) osteoarthritis can be painful and cause disability for patients. Total joint replacement of the TMC joint provides a pseudo arthrosis with good restoration of the thumb motion and pain relief in most patients. But there is also a risk of no improvement following the operation. The purpose of this study was to identify patients at risk of no clinically important improvement following operative treatment of osteoarthritis of the TMC joint.MethodsWe included 287 consecutive patients (225 women, 62 men) treated with total joint replacement of the TMC joint due to osteoarthritis with a mean age of 58.9 years (range 41-80) in a prospective cohort study. We collected information preoperatively and 12 months postoperatively on disabilities of the arm, shoulder and hand score (DASH), grip strength and pain at rest and activity on a visual analogue scale (VAS).ResultsWe found a statistically significant improvement in DASH from 42.0 to 15.9 (p < 0.001), VAS at rest from 3.5 to 0.6 (p < 0.001), VAS at activity from 7.9 to 2.5 (p < 0.001) and grip strength from 21.6 kg to 27.6 kg (p < 0.001) 12 months after the operation, when analysed as a group. There was an increased risk of no clinically important improvement in hand function for patients with preoperative high preoperative grip strength. Also, we found an increased risk of no clinically important improvement in female patients when using VAS as outcome.ConclusionHowever, we were unable to detect one isolated preoperative predictor as indicator of successful result after operative treatment of TMC osteoarthritis, and as so it was not possible to establish a clinical valid tool for patient selection before surgery. Informed consent was obtained from all patients for being included in the study. The study needed no approval from The Regional Committee of Biomedical Research Ethics as the data was collected, as part of our normal pre- and postoperative clinical pathway, but the study is part of an outcome study of the results after total joint arthroplasty (TJA) of the TMC joint registered in Clinicaltrials.gov (NCT01554748).Trial registrationClinicaltrials.gov (NCT01554748). Registered 15 March 2012.

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The "Thumbs-up" sign and trapeziometacarpal joint injection: a useful clinical indicator.

Publications

The "Thumbs-up" sign and trapeziometacarpal joint injection: a useful clinical indicator.

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