Carpometacarpal Research Articles

The long-term curative effect analysis of trans-articular plate combined with Kirschner wires in the treatment of fracture-dislocation of the fifth carpometacarpal joint.

To evaluate the long-term curative effect analysis of trans-articular plate combined with Kirschner wires in the treatment of fracture-dislocation of the fifth carpometacarpal joint. From July 2016 to September 2021, 21 patients with fracture-dislocation of the fifth carpometacarpal joint were treated with trans-articular plate combined with Kirschner wires internal fixation. Each patient's gender, age, dominant hand, injured hand, trauma mechanism, the time between injury and surgery, the range of motion of the bilateral wrist in flexion, extension, radial deviation and ulnar deviation, grip strength of each side, the time of return to work, and follow-up time were recorded. The QDASH score and Cooney wrist function score were used to evaluate the postoperative function. The VAS system was used to evaluate postoperative pain. The follow-up time was 37.0 ± 19.0 months and the time between injury and surgery was 1.3 ± 0.5 days. In the injured side and the contralateral side, the range of motion of the wrist flexion were 58.3 ± 4.0° and 60.5 ± 3.1°, the range of motion of the wrist radial deviation were 25.7 ± 3.3° and 26.9 ± 2.9°, the range of motion of the wrist ulnar deviation were 28.1 ± 3.7° and 29.5 ± 3.1° respectively with no significant difference. The range of motion of the wrist extension (54.0 ± 3.4°) in the injured side was smaller than that in the contralateral side (56.7 ± 3.7°) with significant difference. The grip strength of the injured side and the contralateral side were 96.1 ± 9.5 LB and 100.7 ± 9.7LB respectively with no significant difference. The QDASH score was 3.8 ± 1.8, Cooney wrist function score was 94.5 ± 4.2, VAS score was 1.0 ± 0.8 and the time of return to work was 5.1 ± 0.9 weeks. In the 21 cases, no postoperative complications such as incision infection, failure of internal fixation, fracture nonunion or fracture malunion occurred. The method of trans-articular plate combined with Kirschner wires is one of the alternative treatments for the fracture-dislocation of the fifth carpometacarpal joint. The long-term follow-up results were satisfactory.

Ultrasound and magnetic resonance imaging of hands in systemic sclerosis: A cross-sectional analytical study of prevalence of inflammatory changes in patients with subclinical arthropathy.

Prevalence of synovitis, tenosynovitis, erosions, acro-osteolysis and bone marrow edema in systemic sclerosis is not extensively reported. We aimed to estimate the prevalence of changes in individual joints of hands in systemic sclerosis patients. A cross-sectional analytical study consisting of 34 adults (females, n = 32) with systemic sclerosis. Patients with clinical synovitis were excluded. All patients underwent ultrasound (US) and magnetic resonance imaging of bilateral hands. On US, synovitis, tenosynovitis, erosions, and acro-osteolysis were detected in 97%, 94%, 97%, and 29% patients. Grade I synovitis observed in 67% joints-first carpometacarpal joint (55%), first metacarpophalangeal joint (54%), distal radioulnar joint (50%), and intercarpal joints (47%) were commonly affected. Erosions were common in distal phalanges (first DP72% to fifth DP39%). On magnetic resonance imaging, synovitis, tenosynovitis, erosions, and bone edema were observed in 91%, 85%, 97%, and 85% patients. Grade I synovitis was seen in 70% joints, affecting intercarpal joint (70.6%) and third metacarpophalangeal joint (52.9%) commonly. Grade I erosions were seen in 61%, affecting distal phalanges (55.8%), capitate (60.3%), and lunate (55.8%). Grade I edema was commonly affecting lunate (39%) and capitate (26%). On magnetic resonance imaging, acro-osteolysis was present in 28% (97/340) distal phalanges. Fair agreement (0.21-0.40) was noted between US and magnetic resonance imaging for synovitis and erosions. High prevalence of low-grade inflammation is found in systemic sclerosis patients on US and magnetic resonance imaging. Distal joint assessment in addition to proximal joints improves accurate estimation of prevalence of early arthropathy.

Impact of Adding Carpal Tunnel Release or Trigger Finger Release to Carpometacarpal Arthroplasty on Postoperative Complications.

This study assessed whether adding trigger finger or carpal tunnel release at the time of thumb carpometacarpal (CMC) arthroplasty would increase postoperative opioid use, readmissions, complications, or development of complex regional pain syndrome (CRPS). Using the IBM MarketScan Research Databases from 2012 through 2016, the authors identified two CMC arthroplasty groups. The CMC-only group only had a CMC arthroplasty on the day of operation; the multiple-procedures group had a CMC arthroplasty and concurrent carpal tunnel or trigger finger release. Between the two groups, the authors compared persistent opioid use, 30-day readmissions, 30-day complications, and diagnosis of CRPS. The CMC-only group consisted of 18,010 patients; the multiple-procedures group consisted of 4064 patients. The patients in the multiple-procedures group received a CMC arthroplasty and a carpal tunnel release (74%), a trigger finger release (20%), or both (6%). CMC-only patients had lower rates of persistent opioid use compared with patients who underwent multiple procedures (16% versus 18%). Readmission rates were also lower for CMC-only patients (3% versus 4%). CMC-only patients had decreased odds of persistent opioid use (OR, 0.85; 95% CI, 0.75 to 0.97; P = 0.013) and readmissions (OR, 0.80; 95% CI, 0.67 to 0.96; P = 0.016). The most common reason for readmission was pain (16%). Adding another procedure to a CMC arthroplasty slightly increases the odds of adverse outcomes such as persistent opioid use and readmission. Patients and providers should weigh the efficiency of performing these procedures concurrently against the risk of performing multiple procedures at once. Therapeutic, III.

Complex motions embedded in a hand exercise regimen - effects on thumb function in participants with carpometacarpal osteoarthritis: A pilot study.

The goal of this pilot study was to identify changes associated with completion of a unique six-week hand exercise program in persons with carpometacarpal osteoarthritis. Twenty-four individuals, aged 55-80, with doctor-diagnosed carpometacarpal osteoarthritis participated in the study. Movement data from standard clinical motions and complex multi-planar motions were obtained using a motion capture system at three-time points: an initial visit, after two weeks of hand exercises, and after completion of the six-week exercise program. This exercise program produced trends of improvement in complex multi-planar motions. Specifically, joint angle changes were seen during opposition and the formation of an "okay sign" that was included as part of the exercise program. Through the use of motion capture, changes were identified in thumb joint function after exercise. Specifically, motions associated with the more complex multi-planar tasks showed changes in individual joint contributions following the six-week exercise intervention. The results suggest that further exploration of this exercise program, particularly the inclusion of complex multi-planar tasks during osteoarthritis treatment and associated evaluations, should be considered in future clinical studies.

Total Wrist Arthrodesis: An Update on Indications, Technique and Outcomes.

Painful end-stage wrist osteoarthritis (OA) unresponsive to conservative treatment is frequently managed with total wrist arthrodesis (TWA), which might render pain alleviation and ameliorate function, pain, and grip strength. Usual indications for TWA include inflammatory arthritis, idiopathic degenerative OA and posttraumatic OA, Kienböck's illness, brachial plexus palsy, cerebral paralysis, infraclavicular brachial plexus blocks and other spastic and contracture base illnesses, scapholunate advanced collapse, scaphoid nonunion advanced collapse, and failure of other surgical techniques such as after failed total wrist arthroplasty, four-corner fusion, proximal row carpectomy and severe ligament injuries (this procedure iscarried out when all other treatment alternatives have failed to control the individual's symptoms). TWA is commonly carried out with a dorsal plate fixed from the distal radius to the third metacarpal. However, other surgical procedures have been reported, including intramedullary fixation and new implants that do not cross the third carpometacarpal joint or some procedures without utilizing hardware for example using a vascularized fibular grafting In individuals with rheumatoid arthritis. TWA has been shown to give persistent and painless stability for 20 years or more. The rate of adverse events for TWA ranges from 0.1% to 6.1%, though some authors have published that it can be as high as 27%. The most common adverse events are tendon ruptures, peri-implant fractures of the third metacarpal, the need for hardware removal, and constant pain at the third carpometacarpal joint. In idiopathic degenerative OA, the reoperation rate following TWA has been reported as high as 63%. While TWA can render foreseeable pain alleviation and ameliorate function, orthopedic surgeons should remember that this surgical technique is not without its risks and that the accessibility of many surgical procedures requires orthopedic surgeons to scrupulously contemplate the risks and benefits of each alternative for the individual in front of them.

Physiotherapeutic Approaches in Thumb Carpometacarpal Joint Arthritis for Pain, Function, and Grip Strength

Abstract Thumb carpometacarpal joint osteoarthritis (CMC OA) is a common condition characterized by chronic progressive degeneration of the joint cartilage. Patients present with complaints of pain at the base of the thumb, morning stiffness, and muscle weakness, all of which impair hand function and thus interfere with activities and social participation. Grip and lateral pinch movements are most affected and have a direct impact on independence, self-care, and leisure activities. This review’s objective is to find physical therapy techniques for patients with thumb CMC OA’ and their effect on pain, function, grip strength, and quality of life. Databases searched were Google Scholar, PubMed, and ScienceDirect with keywords CMC arthritis, OA, function, and physiotherapy. Articles published in the last 5 years, in the English language, randomized controlled trials, controlled trials, prospective studies, or systemic reviews were included. Duplicate and nonrelevant articles, case reports, and noncontrolled trials were excluded. Thirteen articles were found of which five articles were included. Prefabricated CMC-metacarpophalangeal immobilization splint, proprioceptive exercises, and ischemic compression over myofascial trigger points in the first dorsal interossei, first dorsal interossei strengthening, and a self-management program called OA thumb-based therapy trial has shown an effect on pain, pinch strength, grip strength, and quality of life. Additional treatments can be used along with conservative treatment for better results in reducing pain, improving grip strength, function, and quality of life in patients with CMC joint arthritis. Utilizing these methods can enhance clinical practice interventions in the management of thumb CMC joint arthritis.

Neglected Dislocation of the Third, Fourth and Fifth Carpometacarpal Joint: A Case Report

Neglected Dislocation of the Third, Fourth and Fifth Carpometacarpal Joint: A Case Report

Variation in palmaromedial articulations of carpometacarpal joints in Thoroughbred and Standardbred racehorses

Carpal conformation is an important factor in relation to joint soundness. The equine carpometacarpal joint (CMCJ) was reported to have variations in its three palmaromedial articulations. Lacking one or more of these articulations has not been radiographically evaluated in Thoroughbred (TB) and Standardbred (SB) racehorses.The study aimed to identify the prevalence of the variation in the palmaromedial articulation of the carpometacarpal joint (PM-CMCJ) in TB and SB horses. Additionally, to detect the probability of having each of the three articulations within and between the breeds. Finally, to establish an anatomical description for the different patterns of the articulations in these horses.313 dorsopalmar radiographs from 174 horses (117 TB and 57 SB) were used. Three articulations at PM-CMCJ were evaluated based on their presence or absence: the articulations between the second and third carpal bones (C2-C3), the second carpal-second metacarpal (C2-Mc2), and the second and third metacarpal (Mc2-Mc3) bones. The probability of each articulation was determined in the breeds. Depending on the presence/absence of one or more of these articulations in each horse, each group of horses that had the same patterns of articulation was gathered into one category.Prevalence of variation in articulations of PM-CMCJ was identified in about 28% of the horses. SB showed a higher variation than TB throughout the comparisons. C2-C3 articulation was significantly the most common articulation, especially in TB (98%). The most common pattern of articulations (73%) was found in category I, which had three articulations whereas three horses grouped in category VI had no palmaromedial articulations.The variations in the articulations of PM-CMCJ in TB and SB racehorse might show a breed association. C2-C3 articulation was considerably the most frequent feature and category I was the common pattern of articulations in PM-CMCJ. The potential clinical effects of the varied patterns of the articulations require investigation.

Volar Plate Advancement and Abductor Pollicis Brevis Tenodesis for Thumb Metacarpophalangeal Joint Hyperextension Correction.

First carpometacarpal (CMC1) osteoarthritis can be accompanied by the collapse of the first ray, with hyperextension of the first metacarpophalangeal (MCP1) joint. It is suggested that failure to address substantial MCP1 hyperextension during CMC1 arthroplasty may diminish post-operative capability and increase collapse reoccurrence. An arthrodesis is recommended in case of severe MCP1 joint hyperextension (>400). We describe a novel combination of a volar plate advancement and abductor pollicis brevis tenodesis to address MCP1 hyperextension at the time of CMC1 arthroplasty as an alternative to joint fusion. In 6 women, mean MCP1 hyperextension with pinch before surgery was 450 (range 300-850) and improved to 210 (range 150-300) of flexion with pinch six months after surgery. No revision surgery has been necessary to date, and there were no adverse events. Long-term outcome data is needed to establish the longevity of this procedure as an alternative to joint fusion, but early results are promising.

Studying the Immediate Effects of Two Types of Thumb Splints on the Pain, Grip Strength, and Hand Function in People With De Quervain Tenosynovitis

Objective: The prevention of thumb joints flexion help cure de Quervain tenosynovitis. The thumb, therefore, is being immobilized in the abduction position by splinting. Thumb abduction can be away from the palm (palmar abduction) or from the fingers (radial abduction), which are done in two different planes. To the authors' knowledge, the literature has not specified which kind of thumb abduction has better treatment outcomes and functions. This study aimed to compare the immediate efficacy of palmar abduction and radial abduction splinting on the severity of pain, handgrip, palmar and lateral pinch strength, and hand function in people with de Quervain tenosynovitis. Materials & Methods: In this quasi-experimental study, 30 volunteer patients (24 females) with de Quervain tenosynovitis referred to clinical centers were selected via convenience sampling. The participants were randomly assigned to three study groups (without the splint, palmar abduction splint, and radial abduction splint). The splints' height was two-thirds of the elbow. The splints were designed to immobilize the carpometacarpal and metacarpophalangeal joint of the thumb but allow the interphalangeal joint to move. One splint immobilizes the thumb in palmar abduction, while another immobilizes the thumb in radial abduction. The outcomes were studied and measured immediately after the intervention and in a single session. The intended outcomes included pain severity, handgrip strength, palmar and lateral pinch strength, and hand function measured with a visual analog scale, hand dynamometers, and the Jebsen-Taylor test, respectively. The repeated measures analysis of variance was performed for statistical analysis using SPSS software, version 16. Results: All participants completed all study assessments. The results showed a significant reduction of pain, handgrip strength, lateral and palmar pinch, and hand function after using a thumb splint compared to without the splint condition (P<0.05). The pain severity in gripping objects was lower after using a palmar abduction splint than the radial abduction splint. Also, the strength reduction in taking objects by gripping, lateral pinch, and palmar was lower after using the palmar abduction splint than the radial abduction splint (P<0.05). Still, both splints were not significantly different in slowing the hand function in the Jebsen-Taylor test (P>0.05). Conclusion: The positioning of the thumb in palmar abduction with splinting could be more effective for pain reduction and manipulation of objects with the hand and fingers.

LIGAMENT RECONSTRUCTION AND TENDON INTERPOSITION ARTHROPLASTY WITH SUTURE ANCHOR IN THE MANAGEMENT OF CARPOMETACARPAL JOINT ARTHRITIS OF THE THUMB

ABSTRACT Purpose: The aim of this study was to report the clinical, functional, and radiological results of patients after early rehabilitation (<2 weeks) following surgical treatment for thumb carpometacarpal joint arthrosis using the ligament reconstruction and flexor carpi radialis tendon interposition with trapezoid suture anchor fixation technique. Patients and Methods: A retrospective analysis was made of 13 thumbs of 12 patients (2 males, 10 females; mean age 63.7 years) who were operated on with the ligament reconstruction and flexor carpi radialis tendon interposition with trapezoid suture anchor fixation technique, because of thumb carpometacarpal joint arthrosis between April 2016 and November 2022. At the final follow-up examination, a record was made of the demographic data, scapho-metacarpal space on the radiological evaluation, the Disabilities of the Arm, Shoulder, and Hand (DASH) scale score, Visual Analog Scale (VAS) score, and key pinch, tip pinch, and grip strength measurements. Results: The mean follow-up period was 36.3 months (range, 12-80 months). In the mean radiological follow-up period of 11.8 months (range, 5-22 months), the mean VAS score decreased from 7.1 (range, 5-10) to 1.7 (range, 1-3), and the mean DASH score from 75.8 (range, 54-90) to 18.2 (range, 7 -32). No significant decrease was determined in the scapho-metacarpal space during the follow-up period. At the final follow-up examination, grip strength was measured as mean 28.7kg (range, 24-39kg), key pinch strength as 2.82kg (range, 2-3.7kg) and tip pinch strength as 2.5kg (range, 1.8-3.4kg). Conclusion: Ligament reconstruction and flexor carpi radialis tendon interposition with trapezoid suture anchor fixation can be an effective alternative surgical treatment method for thumb carpometacarpal joint arthrosis in respect of both clinical and functional results.

Ensemble PyrocarbonTM Hemiarthroplasty for the Treatment of Painful Thumb Carpometacarpal Joint Arthritis with Sparing of the Trapezium

Ensemble PyrocarbonTM Hemiarthroplasty for the Treatment of Painful Thumb Carpometacarpal Joint Arthritis with Sparing of the Trapezium

The effectiveness of Wharton’s jelly versus steroid injection for the treatment of thumb carpometacarpal joint arthritis for pain relief and the increase of function

We compared the effectiveness of Wharton’s jelly versus steroid injection into the carpometacarpophalangeal joint by comparing 60 patients in two cohorts with a follow up evaluation at three months and then at one year. We evaluated preoperative and postoperative grip strength, pinch strength, thumb range of motion, Disabilities of Arm, Shoulder, and Hand (DASH) score and a Visual Analog (VAS) pain score before the injection and then at 3 months and 12 months after injection. The patients in the steroid injection group had substantial improvement in their DASH and VAS pain scores as well as their pinch strength at 3 months p < .05. However, by the 12-month evaluation the benefits of the steroid injection had completely dissipated. The patients in the Wharton’s jelly cohort had improvements at 3 months in terms DASH and VAS score and pinch strength and this improvement persisted at the one-year evaluation. However, grip strength and thumb range of motion did not substantially improve in either group

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Poster Presentation Display time: Day I, March 23, 2023 2.00 pm – Day II, March 24, 2023 1.00 pm: AB No: 44 Physiotherapeutic Approaches in Carpometacarpal Joint Arthritis for Pain, Function, and Grip Strength: A Review

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Poster Presentation Display time: Day I, March 23, 2023 2.00 pm – Day II, March 24, 2023 1.00 pm: AB No: 44 Physiotherapeutic Approaches in Carpometacarpal Joint Arthritis for Pain, Function, and Grip Strength: A Review

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Poster Presentation Display time: Day I, March 23, 2023 2.00 pm – Day II, March 24, 2023 1.00 pm: AB No: 44 Physiotherapeutic Approaches in Carpometacarpal Joint Arthritis for Pain, Function, and Grip Strength: A Review

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Poster Presentation Display time: Day I, March 23, 2023 2.00 pm – Day II, March 24, 2023 1.00 pm: AB No: 44 Physiotherapeutic Approaches in Carpometacarpal Joint Arthritis for Pain, Function, and Grip Strength: A Review

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Innovation Hub Display time: 9.00 am to 5.00 pm: AB No: 114 Concept and design of new device to reduce stress on CMC joint of thumb due to prolonged use of smartphone

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Innovation Hub Display time: 9.00 am to 5.00 pm: AB No: 114 Concept and design of new device to reduce stress on CMC joint of thumb due to prolonged use of smartphone

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Innovation Hub Display time: 9.00 am to 5.00 pm: AB No: 114 Concept and design of new device to reduce stress on CMC joint of thumb due to prolonged use of smartphone

Day II: Friday, March 24, 2023; 11.15 am Plumeria 1 (Exhibition Hall): Innovation Hub Display time: 9.00 am to 5.00 pm: AB No: 114 Concept and design of new device to reduce stress on CMC joint of thumb due to prolonged use of smartphone

Trapeziometacarpal Osteoarthritis Anatomy, Biomechanics, Epidemiology, And Diagnosis

Arthritis is the most common joint disease. It impairs patients quality of life on account of the associated chronic pain and loss of joint function. The thumb is the most important digit of the hand and trapeziometacarpal osteoarthritis (carpometacarpal arthritis / CMC-1 arthritis) may significantly compromise functions of the entire hand. CMC-1 arthritis produces several non-specific symptoms, affecting mainly postmenopausal women. The risk of developing CMC-1 arthritis increases with age.Considering these facts, knowledge about the etiopathogenesis and diagnosis of CMC-1 arthritis should be widely disseminated and based on evidence-based medicine. The first step in the diagnostic work-up is a detailed history and clinical examination where the use of more sensitive tests than the grind test, e.g. the pressure-shear test, is recommended. It is advisable to widen the classic radiographic views with additional thumb projections such as Roberts view. The use of magnetic resonance imaging or computed tomography is only advised in special individual cases.This paper aims to present the most up-to-date knowledge about: (1) the anatomy and biomechanics of the trapeziometacarpal joint, (2) the epidemiology of CMC-1 arthritis and (3) its diagnosis. It is based on the latest literature (mainly works published in the last 5 years) acquired from databases such as PubMed, Clinical Key and Science Direct. The article is the first of a two-part series that presents a diagnostic-therapeutic algorithm for CMC-1 arthritis. The authors believe that it may contribute to broadening knowledge about CMC-1 arthritis, optimizing the therapeutic process and improving care for patients with CMC-1 arthritis in Poland.

Wrist Arthrodesis Using the Medartis Carpometacarpal Joint Sparing Plate.

Total wrist arthrodesis is a well-established surgical technique that provides reliable pain relief in patients with advanced wrist disease. Key limitations of existing plating systems include hardware pull-out, hardware failure, and nonunion. There is limited literature on the newer style carpometacarpal joint (CMCJ) sparing plating system, produced by Medartis. The objective of this study was to determine the long-term clinical and radiological outcomes of wrist arthrodesis with a CMCJ sparing wrist plate. This study retrospectively identified 23 wrist arthrodeses using the Medartis CMCJ sparing plate for review. This study assessed the outcomes of 18 unilateral wrist fusions and 1 bilateral wrist fusion. The study group consisted of 12 men and 5 women with an average age of 56 years (range: 29-82 years) with a mean follow-up period of 17 months. At the time of follow-up, all patients' wrists had fused without postsurgical complication. The final grip strength in the operative hand was 28.2 kg/cm2, which was 87% of the contralateral side. The mean Quick Disabilities of the Arm, Shoulder, and Hand score at follow-up was 23.9, with all patients returning to daily living activities and work. Patients reported minimal pain (1.3/10), with almost all (17/18) satisfied with the outcome of the surgery and describing that they would recommend this procedure. Our case series highlights that the Medartis wrist arthrodesis plate is a newer design that is a well-tolerated option for wrist arthrodesis based on clinical assessment, functional hand assessment, and patient satisfaction, when compared with the existing literature on traditional plating systems.

Anatomic and Biomechanical Study of Thumb Carpometacarpal Dislocations: A Laboratory Study.

No previous study recreating an isolated thumb carpometacarpal (CMC) dislocation with or without suture augmentation has been performed in the laboratory. This investigation aimed to evaluate the mechanism and ligamentous complex of isolated thumb CMC dislocations. Biomechanical analysis was performed in 10 cadaveric specimens. A posteriorly directed force or axial loading with hyperflexion through the CMC joint was applied. Load was applied at a rate of 1 mm/s until posterior CMC dislocation was achieved. Maximum load, displacement under nominal loading, stiffness, and mode of failure were recorded. The native ligament was repaired, augmented with high-tensile suture, and testing was repeated. Posteriorly directed force produced posterior CMC dislocations, while axial loading and hyperflexion through the CMC joint caused fractures. Load-to-failure of the native CMC joint was 217.76 N (SD = 66.03). Stiffness of the ligamentous complex on average was 18.86 N/mm (SD = 8.83). Mean load-to-failure after repair with suture augmentation was 94.62 N (SD = 39.77), with average stiffness of 8.21 N/mm (SD = 3.06). The native ligament was noted to have greater stiffness (P = .002) and greater load-to-failure (P = .0001) than repair with suture augmentation. Maximum displacement-to-failure of the native ligament was 14.5 mm compared with repair with suture augmentation 11.9 mm (P = .068). Isolated CMC dislocation was achieved with a posteriorly directed force rather than hyperflexion of the joint. Ultimate failure load of the repaired ligaments with suture augmentation was about half of that of the native ligaments. Further research into this technique is warranted.