Clinical outcomes of arthrodesis and arthroplasty for the treatment of posttraumatic wrist arthritis

Intra-Articular Corrective Osteotomy for Distal Radial Intra-Articular Malunion Using Patient-Matched Instruments: A Prospective, Multicenter, Open-Label, Single-Arm Trial

Background

Corrective osteotomy for intra-articular malunion is a challenging procedure. However, recent advancements, including patient-matched instruments created on the basis of preoperative computer simulation, enable accurate intra-articular correction. We hypothesized that intra-articular corrective osteotomy using patient-matched instruments for the treatment of distal radial intra-articular malunion would reduce intra-articular deformity and restore wrist function at 12 months of follow-up.

Methods

This prospective study included 12 patients with distal radial intra-articular malunion who underwent intra-articular corrective osteotomy external to the joint using patient-matched instruments. The primary end point was the maximum step-off on the articular surface of the distal radius, measured with use of computed tomography (CT), with an expected postoperative value of ≤1.5 mm. The secondary end points included the gap of the articular surface; range of motion; grip strength; pain evaluated using a visual analog scale (VAS); patient satisfaction; Disabilities of the Arm, Shoulder and Hand (DASH) score; and Patient-Rated Wrist Evaluation (PRWE) score. A mean postoperative step-off of ≤1.5 mm for the primary end point was assessed with use of the 1-sample t test. The secondary end points were assessed with use of the Dunnett multiple comparison test.

Results

The average step-off significantly improved from 3.75 ± 1.04 mm preoperatively to 0.51 ± 0.40 mm at the 52-week postoperative follow-up and was maintained within 1.5 mm. The average wrist and forearm range of motion, VAS score, grip strength, DASH score, and PRWE score significantly improved. Eleven patients were either very satisfied or satisfied with their outcomes.

Conclusions

The use of patient-matched instruments could contribute to improving postoperative outcomes of intra-articular corrective osteotomy procedures involving the distal radius.

Level of Evidence

Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Clinical, Radiographic, and Patient-Perceived Outcome After Radial Hemi-Wrist Arthroplasty With a New Implant: 20 Cases With 5-Year Follow-up

BACKGROUND

Distal component loosening is a common mode of failure in total wrist arthroplasty (TWA). A radial hemi-wrist arthroplasty (RHWA) has the potential to avoid problems related to the distal component in TWA. The aim of this study is to investigate clinical outcomes following surgical treatment with a new RHWA design.

METHODS

In this pilot study of 20 consecutive RHWAs, patients were assessed preoperatively and postoperatively for range of motion, grip strength, Visual Analog Scale (VAS) pain scores, and functional scoring using Patient-Rated Wrist Evaluation (PRWE), Disabilities of the Arm, Shoulder, and Hand (DASH), and Canadian Occupational Performance Measure. Radiographs were analyzed at 12 months and 5 years (mean, 5.1 years) postoperatively.

RESULTS

A total of 46 secondary surgeries were undertaken in 16 wrists, including 7 revisions. Another 6 patients are waiting for revision to radiocarpal arthrodesis. In non-revised patients, the DASH and PRWE scores improved, and wrist range of motion remained largely unchanged except for wrist flexion, which decreased. The VAS pain score during activity was reduced, and hand grip strength remained largely unchanged.

CONCLUSIONS

The new implant resulted in improved functional scoring and improved VAS pain scores in non-revised patients, but many cases needed secondary surgery due to persistent pain. The high revision rate is a major concern, and further use of the implant in its current form cannot be recommended.

Massive Osteolysis and Pseudotumor Formation following Maestro Total Wrist Arthroplasty

Metallosis is a known complication of arthroplasty and has been reported for the hip, knee, and shoulder joints. Metallosis pseudotumors have been linked to an increased risk of implant failure. We report a case of pseudotumor with massive bone loss following total wrist arthroplasty (TWA) using the Maestro implant. Revision to arthrodesis is possible, but issues with bone loss have to be addressed. We recommend caution in offering TWA to young patients with high functional demands.

Clinical and Patient-Reported Outcomes After Total Wrist Arthroplasty and Total Wrist Fusion: A Prospective Cohort Study with 2-Year Follow-up

Background

The functional benefits of total wrist arthroplasty (TWA) over total wrist fusion (TWF) are unknown. The purpose of this prospective cohort study was to compare TWA and TWF with respect to functional outcomes and activity limitations at up to 2 years postoperatively.

Methods

Between 2015 and 2020, we enrolled all adult patients undergoing TWA or TWF for the management of symptomatic end-stage wrist arthritis at 1 hand surgery department. The primary outcome was the Patient-Rated Wrist Evaluation (PRWE). The secondary outcomes were the visual analog scale (VAS) for pain at rest, on motion, and on loading; grip strength; Disabilities of the Arm, Shoulder and Hand (DASH); and range of motion. Patients completed questionnaires and were examined by the same physiotherapist at baseline and at 3, 6, 12, and 24 months postoperatively. Mixed-model analyses adjusting for age, diagnosis, the preoperative value of the dependent variable, and time since surgery were performed to compare differences in PRWE scores, VAS pain scores, and grip strength between TWA and TWF.

Results

Of the 51 patients who had been included at baseline, 47 (18 in the TWA group and 29 in the TWF group) responded to questionnaires and underwent examinations at up to 2 years postoperatively. At baseline, the 2 groups did not differ in terms of age, sex, diagnosis (inflammatory or noninflammatory arthritis), PRWE score, VAS pain score, grip strength, DASH score, or range of motion. No differences between the groups were found for the PRWE (β, -0.1; 95% confidence interval [CI], -14 to 13; p = 0.99), VAS pain at rest (β, -3.3; 95% CI, -15 to 9; p = 0.58), VAS pain on loading (β, -5.3; 95% CI, -22 to 11; p = 0.52), or grip strength (β, -0.02; 95% CI, -0.18 to 0.14; p = 0.80) on the adjusted mixed-model analyses.

Conclusions

Among patients with symptomatic end-stage wrist arthritis, those who underwent TWA did not demonstrate short-term outcomes, including patient-reported disability, pain, and grip strength, superior to those of patients who underwent TWF. These findings call into question the widespread use of TWA.

Level of Evidence

Therapeutic Level II. See Instructions for Authors for a complete description of levels of evidence.

Functional Outcomes of Centralization of the Ulna as a Method of Reconstruction Following Resection of Campanacci Grade 3 Giant Cell Tumor of the Distal Radius

PURPOSE

Wrist reconstruction after distal radial tumor resection poses a challenge to the orthopedic oncologist. We evaluated the functional outcomes of centralization of the ulna with ulnocarpal arthrodesis as a method of reconstruction following resection of distal radius tumors, using impairment measures and patient-reported outcomes.

METHODS

Evaluation of functional outcome was performed using the Musculoskeletal Tumor Society 93 scoring system and Disabilities of the Arm, Shoulder, and Hand questionnaire. We also determined hand grip strength on the affected side, time to radiologic union at the ulnocarpal junction and reduction in wrist circumference. Local complications and oncologic outcomes were recorded.

RESULTS

The study included 26 patients with Campanacci grade 3 giant cell tumor of the distal radius. Mean follow-up period in the study was 32.8 ± 12 months. Mean resection length was 10.3 ± 2.5 cm. Radiologic union at the ulnocarpal junction was achieved in 38.5%, 77% and 96% of the patients by 4, 5, and 6 months respectively. Mean hand grip strength was 74 ± 3.9% of the contralateral side whereas mean reduction in wrist circumference was 16.9 ± 6.4%. A good functional outcome with a mean the Musculoskeletal Tumor Society 93 score of 26 ± 1.4 and mean Disabilities of the Arm, Shoulder, and Hand score of 10.5 ± 6.3 was observed. Fracture of the ulna, hardware loosening, and reflex sympathetic dystrophy were each noted in 1 patient, with an overall complication rate of 10.7% (3/28). No patient had nonunion, infection, or local recurrence.

CONCLUSIONS

This is a simple and effective modality of reconstruction after resection of distal radial tumors. It provides good functional outcome and preservation of good hand grip strength, with low complication rates.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Long-term results after total wrist fusion

Sixty-eight patients with seventy-one total wrist fusions were retrospectively reviewed with a mean follow-up of 11.7 years. The main purpose of this study was to determine long-term functional results and define possible reasons for remaining pain. Except one asymptomatic non-union, all wrist fusions united. The long-term functional result averaged 30 points using the DASH score and appears to be more favorable compared to midterm results in another publication from this department. Only 15 patients were completely free of pain. Most patients complained about remaining pain during strong activities with a mean VAS of 4/10 that could not further been defined on clinical or radiological examinations. Patients with more than two previous operations had a significant worse outcome concerning the modified Mayo wrist score [≤ 1 operation mean 61 points vs. ≥ 2 operations mean 56 points (Mann-Whitney U test: p = 0.009)] and PRWE-G [≤ 1 operation mean 27 points vs. ≥ 2 operations mean 37 points (t test: p = 0.047)] and furthermore a downward trend for worse DASH [≤ 1 operation mean 265 points vs. ≥ 2 operations mean 35 points (t test: p = 0.086)] results. Despite the loss of wrist motion and remaining pain, patients were highly satisfied with the long-term result and 93% would undergo the operation again.

Total Wrist Arthroplasty With a New Design, 20 Cases With 8-Year Follow-Up

PURPOSE

Total wrist arthroplasty (TWA) is an established motion-preserving alternative to arthrodesis in the treatment of wrist arthritis, but post-TWA complications requiring additional surgery remain an issue. A new TWA design has been proposed. The purpose of this study was to report the outcome of a cohort study of 20 patients who underwent surgery using the new TWA design.

METHODS

Patients were assessed before surgery and at 1, 2, and 8 years after surgery for visual analog scale (VAS) pain scores, wrist range of motion, hand grip strength, and patient-reported outcome measures (PROMs). Radiographic examination was conducted for evidence of prosthetic loosening. Reasons for revision were analyzed.

RESULTS

In total, 24 reoperations were performed, including 12 revisions in 6 patients. Patient-reported outcome measures improved significantly at the 2-year follow-up compared with preoperative values. Hand grip strength, wrist extension, and VAS pain scores improved significantly at the 2-year follow-up. No radiographic loosening of the components was observed, but backing out of the carpal screws was noted in 16 of the 20 cases.

CONCLUSIONS

The new TWA resulted in improved VAS pain scores, PROMs, wrist extension, and hand grip strength. The high frequency of reoperation is a concern, and modification of the implant is needed.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Total Wrist Arthroplasty as a Motion-Sparing Option for Distal Radius Malunion in a Patient of Advanced Age: A Case Report

CASE

A 62-year-old woman presented with wrist pain secondary to a distal radius fracture malunion 4 months after a fall onto an outstretched hand. She was not an ideal candidate for osteotomy and bone graft because of the degree of displacement and osteoporosis, so after nonoperative treatment was unsuccessful, she was offered total wrist arthroplasty (TWA) or arthrodesis and opted for TWA.

CONCLUSION

At 14-month follow-up, the patient reported significant improvement in her pain and function. The current generation of TWA implants may allow use in the management of symptomatic distal radius malunions in older, low-demand patients.

Fabricating Stiffness-Matched Three Dimensional -Printed Metal Implants for Total Wrist Arthroplasty

BACKGROUND

Total wrist arthroplasty (TWA) is a motion-sparing treatment for pancarpal arthritis; however, complication rates up to 50% have limited widespread use. Implant micromotion, stress shielding, and periprosthetic osteolysis result in implant failure and revision to arthrodesis. Metal 3-dimensional (3D) printing allows for more accurate matching of surrounding bone biomechanical properties, theoretically reducing periprosthetic osteolysis. Herein, we use computed tomography to characterize the relationship of relative stiffness along the length of the distal radius with patient demographic factors.

METHODS

After institutional review, wrist computed tomography scans at a single institution between 2013 and 2021 were identified. Exclusion criteria were history of radius or carpal trauma or fracture. Collected demographics included age, sex, and comorbidities (including osteoporosis/osteopenia). Scans were analyzed using Materialize Mimics Innovation Suite 24.0 (Leuven, Belgium). Distal radius cortical density (in Hounsfield units) and medullary volume (in cubic millimeters) with relation to distance from the radiocarpal joint were recorded. Average values for each variable were used to 3D-printed distal radius trial components with stiffness matched to bone density by length.

RESULTS

Thirty-two patients met inclusion criteria. Distal radius cortical bone density progressively increased proximal to the radiocarpal joint, whereas medullary volume decreased; changes in both plateaued 20 mm proximal to the joint. Distal radius material properties differed by age, sex, and comorbidities. Total wrist arthroplasty implants were fabricated to match these variables as proof of concept.

CONCLUSIONS

Distal radius material properties vary along the bone length; conventional implants do not account for this variance. This study showed 3D-printed implants can be created to match bone properties along the length of the implant.

Post-traumatic total wrist arthrodesis: Satisfaction study of 42 cases at a mean 97months' follow-up

INTRODUCTION

Total wrist arthrodesis is effective in reducing pain in osteoarthritic wrist, but at the cost of range of motion. The aim of the present study was to assess patient satisfaction after post-traumatic total wrist arthrodesis, complications and risk factors.

HYPOTHESIS

Post-traumatic total wrist arthrodesis provides a high rate of satisfaction.

PATIENTS AND METHODS

A single-center retrospective observational satisfaction survey was carried out for the period 2005-2020 by telephone interview.

RESULTS

Forty-two post-traumatic dorsal plate total wrist arthrodeses were included. Mean follow-up was 97 months. Total arthrodesis achieved a mean 75% reduction in pain, with good functional results (QuickDASH: 23±9.1 [11-42]) and satisfaction (83% of patients very satisfied or satisfied). Seventy-two percent of patients continued in their previous work. The complications rate was 48%. Twenty patients had complications, including 14 (33%) requiring surgical revision. Thirteen patients (31%) had hardware removed due to plaque discomfort and 1 due to bone and joint infection. Seven patients showed CRPS.

CONCLUSION

Total wrist arthrodesis provided good results in terms of pain relief and satisfaction, at the cost of loss of motion. It is a reliable surgical technique, with an essential place in the therapeutic algorithm for post-traumatic osteoarthritic wrist, particularly in manual workers.

LEVEL OF EVIDENCE

IV, single-center retrospective observational study.

Total wrist fusion versus total wrist prosthesis: a comparative study

We present a comparative study of 41 total wrist fusions (TWFs) with contoured plate and 22 total wrist prostheses using the Universal 2™ model, with a mean follow-up of 6 years for the fusion and 6.5 years for the prosthesis. We evaluated grip strength, pain according to the visual analogue scale, functional results using the Quick Disabilities of the Arm, Shoulder and Hand and the Patient-Rated Wrist Evaluation, degree of satisfaction and complications, with no significant differences being observed in any of these variables. The results allow us to conclude that total wrist prosthesis implanted in patients with low or moderate functional demands offers medium-term functional results similar to TWF without increasing the number of complications.Level of evidence: III.

Wrist Salvage Procedures for the Treatment of Kienbock's Disease

Kienbock's disease is a progressive condition characterized by lunate collapse, carpal instability, and eventually perilunate arthritis. Etiology is likely multifactorial, including vascular and anatomic or osseus causes. In cases of advanced disease, disabling pain, limited motion, and decreased grip strength may be present. The preferred treatment options for the nonreconstructable wrist are proximal row carpectomy (PRC), total wrist arthrodesis, and total wrist arthroplasty (TWA). In the following chapter, we will discuss various surgical options for patients with advanced Kienbock's disease.

Total Wrist Fusion with an Intramedullary Device: A Single-Institution Series with a Minimum of One Year Follow-Up

Objective  The primary purpose of this study was to evaluate the functional and surgical outcomes of total wrist fusion (TWF) following the use of a locked intramedullary nail (IMN). Methods  A single institution study was performed, which entailed in-person reexamination of 18 patients ( n  = 19 wrists), out of 35 eligible patients, who underwent TWF with an IMN from 2010 to 2017. For each patient, demographic, preoperative diagnosis, physical examination, wrist radiograph, and outcome questionnaire data were obtained. The questionnaires included the visual analog scale (VAS), quick disabilities of the arm, shoulder, and hand (QuickDASH), and Mayo Wrist Score assessments. In addition, complication and reoperation data for all TWFs with an IMN during the 2010 to 2017 period (35 patients, n _I  = 38 wrists) were noted. Results  In the 18 patients, age was 47.6 ± 13.9 years, 12 (63.2%) were female, and median follow-up was 150 weeks (range: 74-294). The VAS score was 0 ± 0 in 5 of 19 wrists with rheumatoid arthritis (RA) and 1.82 ± 2.78 in 14 of 19 wrists without RA. It was found that 21 of 38 wrists (55.3%) had an implant-related complication and 5 wrists (13%) underwent a reoperation due to the implant itself. Conclusions  To date, no sufficient data are present demonstrating a clear advantage of an IMN over dorsal plating for TWF at intermediate-term follow-up. Surgeons should be knowledgeable of the several potential complications of this IMN prior to its use for TWF. Level of Evidence  This is a Level IV, therapeutic study.

Long-term functional outcomes after total wrist arthrodesis

Current literature surrounding functional outcomes after total wrist arthrodesis is limited by short follow-up or limited use of validated patient reported outcome measures (PROMs). The primary aim of this study was to describe long-term functional outcomes following wrist arthrodesis. Secondary aims were to describe the incidence of complications and patient satisfaction. This was a retrospective single-center study. Patients with a minimum of 10-year follow-up completed a questionnaire including the Patient-Rated Wrist Evaluation (PRWE), the Quick version of the Disabilities of the Arm, Shoulder and Hand (Quick-DASH) score, the EQ-5D-5L score, and a question assessing satisfaction. Presence of a complication was also assessed. During the study period 66 patients underwent total arthrodesis. At a median follow-up of 15 years, complete patient reported outcomes were available for 34 patients. Thirty-two patients were lost to follow-up. Mean age at surgery was 49 and 16 patients were female. Mean PRWE and Quick-DASH scores were 44.8 (SD 27.7; range 0-96) and 41.9 (SD 23.6; range 2.3-97.7) respectively. Twenty-eight patients were satisfied. Nine patients reported complications. There were six cases of hardware removal and two cases of prominent metalwork. One patient underwent revision surgery for non-union. Presence of a complication did not affect the Quick-DASH or PRWE scores. Median EQ-5D-5L score was 0.7. This long-term follow-up suggests high levels of patient satisfaction and health related quality of life, despite significant functional disability. The complication rates are not insignificant, although the presence of a complication did not affect functional outcomes.

Results of the total wrist arthrodesis with contoured plate in a series of 41 wrists with median follow-up of 6 years

We present a comparative analysis between the pre and postoperative status of 41 wrists subjected to total arthrodesis with contoured plate, analysing the functional and radiological results, subjective satisfaction and return to work. The indications for surgery were post-traumatic arthritis (56.1%), Kien- böck's disease (17.1%), rheumatic disease (14.6%) or other reasons (12.2%). In 75.6% of the procedures, proximal row carpectomy took place prior to or at the same time as the surgical fusion procedure. The median follow-up was 6 years. Postoperatively, pain decreased by 7.5 points on the Visual Analogue Scale and grip strength increased by 6.3 kg. The improvement in the Quick Disabilities of the Arm, Shoulder and Hand was 43.5 points and 53.2 in the Patient- Rated Wrist Evaluation. All changes were statistically significant. There were postoperative complications in 14.6% of the arthrodesis procedures. Radiocarpal fusion was complete in 97.6% of cases. Finally, 62.5% of patients were able to return to work, with 92.5% being satisfied or very satisfied. These results allow us to conclude that, in the medium term, total wrist arthrodesis with contoured plate is a reliable and safe technique for the treatment of advanced radiocarpal arthritis.

Does Proximal Row Carpectomy Improve Union in Wrist Arthrodesis? A Retrospective Cohort Study

Background  Some surgeons advocate for concomitant proximal row carpectomy (PRC) with total wrist arthrodesis (TWA), though there are limited data to support or oppose this view. Questions/Purposes  Does concomitant PRC improve rates of union, revision, hardware loosening, hardware failure, and hardware removal in TWA? Patients and Methods  A retrospective cohort study of patients who underwent TWA with and without concomitant PRC between January 2008 and December 2018 was undertaken. Patients were included if they underwent TWA using a dorsal spanning plate. Patients were excluded if they underwent partial wrist arthrodesis, revision TWA, or TWA with nondorsal spanning plate fixation. Results  A total of 183 wrists in 180 patients were included in the study, 96 (52.5%) in the TWA only and 87 (47.5%) in the TWA + PRC groups. Median clinical and radiographic follow-up was 18.0 months (3.0-133.0 months) in the TWA + PRC group and 18.5 months (2.0-126.0 months) in the TWA only group ( p  = 0.907). No difference in nonunion (TWA + PRC: 13/87 [14.9%], TWA only: 18/96 [18.8%], odds ratio: 0.76, p  = 0.494), revision (TWA + PRC: 5/87 [5.75%], TWA only: 8/96 [8.33%], hazard ratio [HR]: 0.73, p  = 0.586), loosening (TWA + PRC: 4/87 [4.60%], TWA only: 6/96 [6.25%], HR: 0.74, p  = 0.646), failure (TWA + PRC: 5/87 [5.75%], TWA only: 4/96 [4.17%], HR: 1.55, p  = 0.530), and removal (TWA + PRC: 12/87 [13.8%], TWA only: 16/96 [16.7%], HR: 0.84, p  = 0.634) were identified. Conclusion  Concomitant PRC might not improve rates of union or diminish complications in patient undergoing TWA. The role of PRC and the rationale for its use in TWA need to be individualized and discussed with patients prior to surgery. Level of Evidence  This is a Level IV, therapeutic study.

Patients' experiences before and after total wrist fusion or total wrist arthroplasty: A qualitative study of patients with wrist osteoarthritis

INTRODUCTION

For patients with advanced wrist osteoarthritis (OA), total wrist fusion (TWF) is the standard surgical treatment, although total wrist arthroplasty (TWA) has become a plausible motion-preserving alternative.

PURPOSE

To explore patients' experiences of living with advanced wrist OA before and after surgery with either a TWF or a TWA. Furthermore, we wanted to explore the expectations of surgery, appraisal of results, and the adaptation strategies used to overcome challenges in everyday life.

STUDY DESIGN

Qualitative descriptive.

METHODS

A purposive sample of 13 patients with advanced wrist OA surgically treated with TWF (n = 7) or TWA (n = 6) was recruited. Semistructured interviews were conducted and analyzed using qualitative content analysis.

RESULTS

Four categories are described: the problematic wrist, the breakpoint, appraisal of the results, and adaptation to challenges in everyday life. Pain relief was the primary expectation of surgery, and involvement in the discussion regarding different surgical options had a positive effect on the appraisal of results. The participants' ability to perform tasks in everyday life appeared to be more related to their level of pain than the range of wrist motion. Successful coping strategies were developed, enabling the participants to become more independent and adapt to challenges in daily life.

CONCLUSIONS

Previous surgical experiences, occupation, and amount of wrist motion influenced the participants' expectations, surgical choice with either a TWF or a TWA, and the appraisal of results. The findings contribute valuable insights to both surgeons and hand therapists about the importance of having the patient's individual expectations and needs in focus.

Union of Radiocarpal Fusion With and Without Proximal Row Carpectomy: A Systematic Review

PURPOSE

Wrist fusion provides a solution to the painful, arthritic wrist, and can be concomitantly performed with or without a proximal row carpectomy (PRC). The benefits of combining a PRC with fusion include a large amount of local bone graft for fusion and a lower number of joints needed to fuse. We hypothesized that wrist fusion combined with PRC will have a higher fusion rate than wrist fusion performed without PRC.

METHODS

A systematic review was performed to identify all papers involving wrist arthrodesis using the following databases: PubMed, Ovid, Scopus, Web of Science, and COCHRANE. A literature search was performed using the phrases "wrist" OR "radiocarpal" and "fusion" OR "arthrodesis". Inclusion criteria included complete radiocarpal fusion performed for rheumatoid, posttraumatic, or primary arthritis; union rates available; English-language study. Studies were excluded if case reports; diagnoses other than the ones listed previously; inability to abstract the data. Data collected included wrist fusions with PRC or without PRC, union rate, patient age, underlying diagnosis, and method of fixation.

RESULTS

A total of 50 studies were included in the analysis. There were 41 studies with no PRC, 8 studies with PRC, and 1 study with and without PRC. There were 347 patients with a PRC and 339 patients had a successfully fused wrist (97.7%). There were 1,355 patients who had a wrist fusion with no PRC, and1,303 patients had successful wrist fusion (96.2%). The difference in fusion rate between the 2 groups, 97.7% versus 96.2%, was not statistically significant.

CONCLUSIONS

There is no statistically significant difference with regards to union rate in wrist fusion with a PRC versus wrist fusion without a PRC.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

A systematic review of outcomes of wrist arthrodesis and wrist arthroplasty in patients with rheumatoid arthritis

Surgical management of end-stage rheumatoid wrists is a contentious topic. The standard surgical treatment has traditionally been wrist arthrodesis. Wrist arthroplasty, however, offers an alternative that preserves some wrist motion. A systematic review of MEDLINE, EMBASE and CENTRAL databases was conducted. Data from 23 studies representing 343 cases of wrist arthrodesis and 618 cases of wrist arthroplasty were included. Complication rates were 17% for arthrodesis and 19% for arthroplasty, and both procedures were effective at alleviating pain and improving grip strength. Functional assessment by Disabilities of the Arm, Shoulder, and Hand and Patient-Related Wrist Evaluation of arthroplasty patients revealed clinically meaningful functional improvement compared with preoperative measurements. In contrast to previously published findings both procedures demonstrated comparable complication rates. While this can be speculated to be from advancements in prosthetics, robust long-term follow-up data on wrist arthroplasty are not available yet.

Complications and Factors Associated with Reoperation following Total Wrist Fusion

Background  Total wrist fusion can be elected to relieve pain in patients with osteoarthritis and rheumatoid arthritis. This study aimed to investigate the overall complications and the factors associated with reoperation and soft tissue complication after total wrist fusion. Methods  We retrospectively identified adult patients who underwent total wrist fusion using Current Procedural Terminology (CPT) codes, International Classification of Diseases, Ninth and Tenth Revision (ICD-9 and ICD-10) and verified these by medical chart review. We included patients ( n  = 215) who were treated at a single institutional system from January 1, 2002 to January 1, 2019. The mean age was 53.3 ± 15.0 years and the median follow-up was 6.1 years (interquartile range [IQR] =1.7-9.0). The most common indications for wrist fusion included inflammatory arthritis ( n  = 66, 31%), degenerative arthritis ( n  = 59, 27%), and posttraumatic arthritis ( n  = 47, 22%). All wrist fusions were performed using a dorsal fusion plate or dorsal spanning plate, either with a local autograft ( n  = 167, 78%), iliac crest autograft ( n  = 2, 1.0%), allograft ( n  = 7, 3.3%), a combination of both ( n  = 16, 7.4%), or without a graft ( n  = 23, 11%). We performed a multivariable logistic regression to evaluate factors associated with reoperation. In addition, we performed a similar analysis to identify the factors associated with soft tissue complication after total wrist fusion. Results  Forty-one (19%) patients underwent reoperation at a median of 6.9 months (IQR = 3.9-18). The indications included symptomatic implants ( n  = 12, 27%), implant failures ( n  = 8, 20%), infections ( n  = 7, 17%), and nonunions ( n  = 6, 15%). In multivariable analysis, total wrist fusion of the dominant hand (odds ratio [OR]: 2.2, 95% confidence interval [CI]: 1.1-4.7, p  = 0.033) was associated with a higher reoperation rate. Soft tissue complications occurred in 20 patients (9.3%) consisting of hematomas ( n  = 8, 3.7%), observed blistering ( n  = 5, 2.3%), and observed wound dehiscence ( n  = 4, 1.9%). In multivariable analysis, smoking (OR: 2.5, CI: 0.95-6.4, p  = 0.010) was independently associated with soft tissue complication after total wrist fusion. Seventy-two (33%) patients had a postoperative complication including symptomatic hardware ( n  = 16, 7.4%), implant failure ( n  = 11, 5.1%), infection ( n  = 11, 5.1%), nonunion ( n  = 8, 3.7%), and carpal tunnel syndrome ( n  = 4, 1.9%). Conclusion  Roughly one-third (33%) of the patients undergoing total wrist fusion experience a postoperative complication and 19% of the patients underwent a reoperation. Total wrist fusion of the dominant hand results in higher reoperation rates. The risk of a soft tissue complication after total wrist fusion is increased in smokers.

Salvage of the Failed Total Wrist Arthroplasty: A Systematic Review

Background  Although the performance of total wrist arthroplasty systems has improved, failure is encountered and is a major challenge to manage. Questions  Does physical function improve with surgical management of the failed wrist arthroplasty? Is there an improvement in secondary outcome measures including pain, grip strength, and range of motion? What are the reasons for failure in primary total wrist arthroplasty? What are the complications associated with revision of the failed total wrist arthroplasty? What are the survival profiles of the different revision strategies? Methods  A systematic review of available literature was performed. Studies were systematically assessed, and data extracted from suitable studies for review. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guidelines were adhered to. The study protocol was modified from a previous protocol published on the PROSPERO database. Results  Fourteen studies were identified considering 218 patients/214 index operations with a follow-up duration following revision surgery of 2 months to 21 years (silicone wrist arthroplasty-42 cases; nonsilicone wrist arthroplasty-172 cases). The functional outcome of revision surgery was infrequently recorded and documented with only short-term assessments undertaken. Complications were seen in 1:2 revision procedures, with re-revision surgeries required in 21.6% of revised primary nonsilicone arthroplasties. Re-revision rate following a revision arthrodesis was 21.4% (15/70 cases) compared with revision arthroplasty of 34.8% (32/92 cases). Revision arthrodesis nonunion rate was 17.5% (22 cases). Conclusion  This review has confirmed the high level of surgical complexity and the likelihood of a complicated postoperative outcome when salvaging a failed wrist replacement. Level of Evidence  This is a Level 3, systematic review study.

Total Wrist Arthroplasty: A 10-Year Follow-Up

PURPOSE

To assess long-term implant survival in total wrist arthroplasty (TWA), comparing 4 different implants.

METHODS

In a prospective cohort of 124 patients, 136 TWAs were evaluated 5 years and 10 years after surgery. The TWAs were implanted between 2005 and 2009. The primary outcome was implant survival. Survival analysis was performed with revision and radiographic loosening as the final end point. Revision was defined as exchange of whole or parts of the prosthesis. Implant loosening was assessed using radiographic examination at the 5-year and 10-year follow-up. Secondary outcome measures included wrist range of motion, hand grip strength, visual analog scale (VAS) pain scores, and patient-related outcome measures, including Disabilities of the Arm, Shoulder, and Hand (DASH), Patient-Rated Wrist Evaluation (PRWE), and Canadian Occupational Performance Measure (COPM).

RESULTS

Total cumulative implant survival was 92% with revision as the primary end point. When including a nonrevised radiographic loose implant as a failure, total implant survival was 75%. Radiographic loosening differed significantly between the implants with a range in frequency from 0% to 37.5%. At the 10-year follow-up, assessing the nonrevised TWAs, range of motion was preserved compared with preoperative values. Significant improvement was recorded for hand grip strength, VAS pain scores, and patient-related outcome measures at the 10-year follow-up compared with preovperative values.

CONCLUSIONS

High 10-year implant survival was found when defining the primary end point as revision of any cause. When including radiographic loosening of the implant in the survival analysis, implant survival was considerably lower. However, radiographic loosening does not seem to correlate with changes in secondary outcome measures, questioning the need for revision surgery in these cases.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

Salvage procedure after malunited distal radius fractures and management of pain and stiffness

Indications for surgical treatment of distal radius fractures (DRF) remain controversial in the literature, especially in elderly patients. Complication rates after operatively treated DRF are low and well documented. These include malunion, degenerative osteoarthritis in the radiocarpal joint and subsequently pain and impaired hand function. If conservative treatment fails then salvage procedures are necessary. This review summarizes the therapeutic options available to treat degenerative osteoarthritis after malunited distal radius fractures, regardless of the initial operative or conservative treatment.

Low-profile locking-plate vs. the conventional AO system: early comparative results in wrist arthrodesis

INTRODUCTION

Total wrist arthrodesis represents a reliable salvage procedure for severe painful conditions of the wrist. To date, wrist arthrodesis using a dorsal plate reaching from the distal radius to the third metacarpal is still recommended. A new implant (APTUS© 2.5 TriLock Wrist Fusion Plate, Medartis Suisse) that does not cross the third carpometacarpal joint (CMCJ-3) has been introduced recently. The purpose of this retrospective study was to compare both implants concerning early functional and clinical results.

MATERIALS AND METHODS

A total of 20 patients underwent total wrist arthrodesis [10, using the new APTUS© implant (APT); 10 using the Depuy-Synthes© LCP plates (AO)]. The postoperative control interval was 18.2 and 37.2 months in APT and AO, respectively. Clinical assessment included functional parameters such as active range of motion (AROM) for pronation and supination, grip strength, and passive range of motion of the CMCJ-3. Additionally the DASH score and the Krimmer wrist score as well as pain levels at rest and under stress conditions were evaluated.

RESULTS

All patients showed osseous healing without complications except one case of non-union in APT. There were no significant differences between both groups concerning grip strength, AROM of the wrist, pain levels, DASH- and Krimmer Score. APT showed a significantly increased passive range of motion of the CMCJ-3 compared to the unaffected contralateral side.

CONCLUSIONS

The new implant shows similar functional results compared to the standard procedure. The main advantage of the new implant is the fact that no implant removal is necessary due to the unaffected CMCJ-3. Furthermore the mobility of the CMCJ slightly increased and showed positive impact on hand kinematics.

Functional outcomes after salvage procedures for the destroyed wrist: an overview

The most widely used procedures for salvaging a destroyed wrist are four-corner arthrodesis, radiocarpal arthrodesis, proximal row carpectomy, total wrist arthrodesis, and total wrist replacement or resurfacing. The purpose of this article is to give an overview of the functional results obtained with the various salvage procedures and of the common methods for assessing the surgical outcomes. The outcomes are assessed by clinical measurements and scoring methods, but the actual functional status and well-being of the patients should be presented together with patient-reported outcomes. No salvage procedure can restore entirely full wrist function. Understanding indications, risks, and the outcomes of these procedures would favour a better decision for surgery and help choose the proper treatment from among the surgical options discussed with patients.

Functional Outcomes After Salvage Procedures for Wrist Trauma and Arthritis (Four-Corner Fusion, Proximal Row Carpectomy, Total Wrist Arthroplasty, Total Wrist Fusion, Wrist Denervation): A Review of Literature

Background:

Several salvage procedures for the arthritically destroyed wrist exist. Each of these has advantages as well as disadvantages.

Aims:

The aim of this article is to give practical insights for the clinician on: (1) biomechanical and clinical fundamentals of normal and impaired wrist motion; (2) difficulties in assessment of postoperative outcome between measured motion by the surgeon and self-reported outcome by the patient; (3) indications for each procedure; and (4) differences in functional outcome between partial and complete motion-preserving as well as complete motion-restricting salvage procedures.

Methods:

In trend, Proximal Row Carpectomy (PRC) is slightly superior over four-corner fusion (4CF) in terms of functional outcome, but the methodology-related postoperative motion is decreased for both procedures. Furthermore, PRC is easier to perform, needs lower costs, and has fewer complications than 4CF. Total Wrist Arthroplasty (TWA) has the advantage compared to PRC and 4CF that the preoperative motion values are preserved, but it is limited by decreased load-bearing capacity for the wrist. Total Wrist Fusion (TWF) is associated with a higher load-bearing capacity for the wrist than TWA, but it is limited for carrying out essential activities of daily living. Both PRC and 4CF can be combined primarily by wrist denervation. Wrist denervation alone does not impair the movement of the wrist.

Results and Conclusion:

Salvage procedures for the arthritically destroyed wrist should be detected regarding patients age- and gender-related claims in work and leisure. Not all of them can be successfully re-employed in their original occupations associated with high load-bearing conditions.

Motec Wrist Arthroplasty: 4 Years of Promising Results

BACKGROUND

The Motec cementless modular metal-on-metal ball-and-socket wrist arthroplasty is an implant with promising intermediate results. An alternative to primary wrist fusion, total wrist arthroplasty is an option for active patients, who wish to retain their wrist function. It is indicated in cases of degenerative osteoarthritis, post-traumatic arthritis and rheumatoid (inflammatory) arthritis.

METHODS

A prospective review of patient demographics, pre and post-operative Disabilities of the Arm Shoulder and Hand (DASH), MAYO scores, range of movements and grip strengths. All complications in follow up were recorded across the 4 year period.

RESULTS

25 implants on 23 patients over 5.5 years, mean age 61; 8 females and 15 male. 10 patients with SLAC, 3 SNAC, 5 inflammatory and 7 patients with generalized osteoarthritis. The patients showed significant improvements of MAYO and DASH scores post-operatively, as well as the flexion/extension arc and grip strengths. There was just one case of implant loosening- the radial screw after a wound infection, which was revised with a longer screw. Two implants were converted to Motec fusion due to pain. One implant was dislocated and relocated. The remaining patients have had good wrist function. Only 6 patients were unable to return to work.

CONCLUSIONS

Similar to published studies, this series shows the Motec implant to be a good motion preserving alternative to total wrist fusion.

Systematic Review of Total Wrist Arthroplasty and Arthrodesis in Wrist Arthritis

Background  End-stage wrist arthritis has traditionally been treated with a total wrist fusion. There is a recent trend toward motion preserving surgery in the form of total wrist replacement. Questions  Is there a functional benefit to performing a total wrist replacement instead of a total wrist fusion in patients with end-stage wrist arthritis? Is there any difference in secondary outcome measures including pain, grip strength, and range of motion? Does the risk of adverse events and treatment failure differ between the two techniques? Methods  A systematic literature search was performed to identify studies reporting either total wrist arthrodesis or arthroplasty for end-stage wrist arthritis. Studies were systematically screened and assessed for risk of bias and quality. Data were extracted and reviewed. Results  A total of 43 studies were included in the review: 17 on arthrodesis, 24 on arthroplasty, and 2 matched cohort studies. This represented 669 index arthrodesis operations in 603 patients, and 1,371 index arthroplasty operations in 1,295 patients. A significant improvement in functional outcome was seen with both interventions. Similar improvements were seen in pain scores, and modest improvements were seen in grip strength. Range of motion following arthroplasty improved to a functional level in two studies. Complication rates were higher after arthroplasty (range: 0.2-9.5%) than those after arthrodesis (range: 0.1-6.1%; p  = 0.06). Fourth-generation implants (range 0.1-2.9%) performed better than earlier designs (range: 0.2-8.1%; p  = 0.002). Implant revision rates ranged from 3.5 to 52.6%. Fourth-generation prostheses survival rates were 78% at 15 years (Universal 2), 86% at 10 years (Motec), 90% at 9 years (Re-Motion), and 95% at 8 years (Maestro). Conclusion  The newer fourth-generation wrist implants appear to be performing better than earlier designs. Both wrist arthrodesis and wrist arthroplasty improve function, pain, and grip strength. The risk of complication following wrist replacements is higher than that after total wrist arthrodesis.

Results of the Universal 2 Prosthesis in Noninflammatory Osteoarthritic Wrists

Background/Purpose  Many treatment options are available for wrist osteoarthritis, with the objective of decreasing pain and preserving function. In later stages when midcarpal and radiocarpal osteoarthritis occur, two choices remain: total wrist arthrodesis or total wrist arthroplasty. The purpose of this study is to present the short-term functional changes following total wrist arthroplasty with the Universal 2 total wrist system (Integra Life Sciences) in patients with noninflammatory wrist osteoarthritis. Patients and Methods  Patients with severe noninflammatory wrist osteoarthritis were assessed preoperatively, 6 and 12 months after surgery using a range of motion, grip strength, pain, and the disabilities of the arm, shoulder, and hand (DASH) score. The additional assessment was performed after 1 year for a range of motion using a biaxial electrogoniometer, grip strength, DASH, and the Michigan hand questionnaire. Results  All range of motion directions and grip strength did not change from preoperative values. The DASH score improved from 53 preoperatively to 14 during latest follow-up. Median patients' satisfaction score decreased with approximately 20 points during the last follow-up. Conclusion  The relatively good DASH score combined with the partly maintained wrist range of motion indicates that reconstruction with the Universal 2 total wrist prosthesis should be considered in patients with end-stage noninflammatory wrist osteoarthritis. Level of Evidence  Level IV, therapeutic study.

Neurologic complications in common wrist and hand surgical procedures

Nerve dysfunction after upper extremity orthopedic surgery is a recognized complication, and may result from a variety of different causes. Hand and wrist surgery require incisions and retraction that necessarily border on small peripheral nerves, which may be difficult to identify and protect with absolute certainty. This article reviews the rates and ranges of reported nerve dysfunction with respect to common surgical interventions for the distal upper extremity, including wrist arthroplasty, wrist arthrodesis, wrist arthroscopy, distal radius open reduction and internal fixation, carpal tunnel release, and thumb carpometacarpal surgery. A relatively large range of neurologic complications is reported, however many of the studies cited involve relatively small numbers of patients, and only rarely are neurologic complications included as primary outcome measures. Knowledge of these neurologic outcomes should help the surgeon to better counsel patients with regard to perioperative risk, as well as provide insight into workup and management of any adverse neurologic outcomes that may arise.

Survivorship of Revision Wrist Replacement

Purpose  This study aims to report the 5-year survivorship of revision wrist arthroplasties and to report midterm clinical and radiological results. Materials and Methods  All patients receiving a revision wrist arthroplasty in our unit between January 1, 1997 and October 31, 2010 were identified, and clinical notes retrospectively analyzed for Quick Disabilities of the Arm, Shoulder and Hand (quickDASH), Patient Evaluation Method (PEM), Patient-Rated Wrist Evaluation (PRWE), the range of movement, and visual analog score (VAS). In cases where patient review had not occurred within the past year, they were invited for assessment, and this data was included in the analysis. Plain radiographs were analyzed for loosening of each component. The 5-year survival was plotted using Kaplan-Meier analysis. Results  Of the 19 patients identified, 1 was lost to follow-up and therefore excluded from all analyses. Mean age at revision wrist arthroplasty was 55.8 years and the mean time from primary to revision wrist arthroplasty was 6.7 years. At revision arthroplasty, 7 patients received the Biaxial implant (DePuy, Inc., Warsaw, IN) and 11 received the Universal II implant (Integra, Inc., Plainsboro, NJ). The 5-year implant revision survivorship was 83%. Depending on the variable of interest, clinical data were available for either three, four or five patients. At final follow-up (mean: 10.4 years), mean visual analog score was 2.9, mean quickDASH 57, mean PEM 49, mean PRWE 61, and mean arc of flexion/extension was 26 degrees. Radiological data were available for 12 patients, with evidence of gross loosening present in around 60% of the carpal components and 50% of the radial components at mean 6.7 years. Conclusion  Revision wrist replacement implant survival is acceptable, but the majority of the surviving implants are radiologically loose. It is not clear at this time whether they are better or worse than a fusion after a failed primary wrist arthroplasty. Clinical Relevance  It is reasonable to offer revision wrist arthroplasty in selective cases, but regular clinical and radiological follow-up is recommended.

Clinical and radiological outcomes following radioscapholunate fusion

INTRODUCTION

Radioscapholunate (RSL) fusion is typically performed following wrist trauma. It addresses the pain caused by radiocarpal osteoarthritis but reduces the wrist's mobility. The objective of this study was to determine the long-term clinical and radiological outcomes of this procedure.

MATERIALS AND METHODS

This was a retrospective study of all wrists operated for RSL fusion in our surgery unit over a 12-year period. The clinical analysis consisted of joint amplitudes, grip strength, pain (VAS) and functional scores (PRWE, QuickDash, Mayo Wrist Score). The radiological analysis focused on bone fusion and the presence of midcarpal osteoarthritis.

RESULTS

This surgery procedure was performed on 48 wrists. Of these, 34 patients were available for review, including 6 who had subsequently undergone total wrist fusion after the RSL procedure. The average follow-up was 53 months. Flexion/extension and radioulnar deviation were 56° and 30°, respectively. Grip strength in the operated wrist was 71% of the contralateral wrist. The mean pain level was 3 out of 10. The PRWE, QuickDash and Mayo Wrist Score were 35.7, 44.5 and 57.2, respectively. Seventy-nine percent of patients were satisfied with the outcome. The fusion rate was 71%, the midcarpal osteoarthritis rate was 64% and the STT osteoarthritis rate was 46%.

DISCUSSION

Reduced wrist range of motion in patients who have undergone RSL fusion helps to preserve satisfactory function in the majority of patients; however, the functional outcome scores point to some hindrance in day-to-day activities. Nonunion occurred in nearly one-quarter of patients and appears to be preventable by excision of the distal pole of the scaphoid (DPS). Midcarpal osteoarthritis develops in most wrists over the long-term and appears to be inevitable.

CONCLUSION

RSL fusion is a palliative procedure that preserves some of the wrist's mobility. However, it is a difficult procedure that has a significant nonunion rate. Excision of the DPS may contribute to lowering the nonunion rate.

Total Wrist Arthroplasty Versus Wrist Fusion: Utilization and Complication Rates as Reported by ABOS Part II Candidates

BACKGROUND

The aim of this study was to assess national trends in the utilization and complication rates of total wrist arthroplasty (TWA) and total wrist fusion (WF) as identified via review of the American Board of Orthopedic Surgery (ABOS) Part II candidate database.

METHODS

The ABOS Part II candidate database is a collection of cases reported by candidates of the ABOS Part II board certification oral exam. The ABOS database was queried for all TWA and WF cases performed from 2005 to 2014. Linear regression analyses were used to assess trends in procedure utilization. Treatment diagnoses, patient characteristics, and reported complications were also compared between the 2 treatment cohorts.

RESULTS

No significant increases in the proportion of candidates performing TWA or WF, number of TWA or WF cases, nor the number of TWA or WF cases performed per candidate performing those procedures were noted during the study period. Significantly less TWA cases were performed when compared with WF cases (68 vs 327; P = .006). Patients undergoing TWA were significantly older ( P = .005), more likely female ( P < .001), and more likely to have a diagnosis of osteoarthritis ( P = .003) than patients undergoing WF. There were no significant differences in complication rates, including postoperative infection, nerve palsy, or rate of secondary surgery, between the TWA and WF cohorts.

CONCLUSIONS

Utilization of both TWA and WF has remained unchanged among emerging career orthopedic surgeons. Although WF is performed nearly 5 times more frequently than TWA, our short-term findings suggest that TWA compares favorably with WF.

Does Total Wrist Arthroplasty for Treatment of Posttraumatic Wrist Joint Osteoarthritis in Young Patients Always Lead to Restriction of High-demand Activities of Daily Living? Case Report and Brief Review of Recent Literature

Background:

Posttraumatic ulnar carpal translocation is a very rare condition that is caused either by fracture-dislocation injury or by purely ligamentous injury of the wrist. Its prognosis is poor and development of posttraumatic pancarpal wrist joint osteoarthritis is inevitable, and options for treatment are total wrist fusion or total wrist arthroplasty.

Methods:

A 24-year-old male sustained a fracture-related injury in his left wrist that was accompanied with a second ligamentous distorsion-related injury 1 year later in the same wrist. Seven years after first injury, a posttraumatic pancarpal wrist joint osteoarthritis has developed that was caused by posttraumatic ulnar carpal translocation. The patient was treated by total wrist arthroplasty with use of the Maestro^TM Wrist Reconstructive System.

Results:

With our patient, it is unclear whether posttraumatic ulnar carpal translocation occurred either as result of the first fracture-related injury or as result of the second ligamentous distorsion-related injury or as result of both injuries. The 31-year-old patient could be reemployed completely in his original occupation as a mechanic for big agriculture machines and load his wrist with more than 10 pounds. In order to preserve motion, the patient reported that he would undergo the same total wrist arthroplasty a second time were it necessary.

Conclusion:

We report on a young male receiving total wrist arthroplasty and resulting in good restoration of his high-demand claims in activities of daily living, respectively. However, it cannot be concluded that total wrist arthroplasty is to be preferred generally over total wrist fusion in young patients. Essential prerequisite for this motion-preserving procedure is the compliance of patients.

Total Wrist Arthroplasty

Total wrist arthroplasty using current design implants has evolved into a fairly predictable procedure for rheumatoid, osteoarthritic, and posttraumatic patients. Although complications can occur, the incidence of these has dropped over the past decade with implant design modifications. The article summarizes the current use of total wrist arthroplasty and touches on issues of revision surgery, secondary fusion, complications, wrist fusion takedown, and radiolucency around implants. Technical tips are also provided for both primary and revision surgery.

Total Wrist Arthrodesis: Indications and Clinical Outcomes

Total wrist arthrodesis remains an important technique in the surgical armamentarium of upper extremity surgeons. The procedure has evolved over time but continues to provide reliable pain relief at the expense of wrist motion. It is indicated for management of a wide variety of upper extremity conditions, including rheumatoid arthritis, posttraumatic osteoarthritis, cerebral palsy, and brachial plexus injuries, and as a salvage technique after failed implant arthroplasty. Recent studies demonstrate high levels of patient satisfaction and good functional outcomes after bilateral wrist fusion. Compared with total wrist arthroplasty, total wrist arthrodesis provides more reliable pain relief with lower rates of complications, but further studies are needed to compare functional outcomes and cost-effectiveness.

Trends in the Utilization of Total Wrist Arthroplasty versus Wrist Fusion for Treatment of Advanced Wrist Arthritis

BACKGROUND

Total wrist arthroplasty (TWA) provides the requisite range of motion to accomplish activities of daily living, especially for low-demand patients with bilateral wrist arthritis. However, there are no large epidemiologic studies to evaluate nationwide trends of TWA and wrist fusion (WF).

QUESTIONS/PURPOSES

To analyze data collected from the National Inpatient Sample (NIS) to compare utilization, demographic, and outcome data among patients undergoing TWA versus total WF. We hypothesized that utilization rates of TWA have significantly increased over the prior decade in the United States.

METHODS

NIS data from 2001 to 2010 were reviewed. Procedures were identified by ICD-9-CM codes 81.73 (TWA) and 81.25 (WF). Utilization rates, primary treatment diagnoses, patient demographic and medical comorbidity data, and procedure costs were compared between TWA and WF.

RESULTS

There was a decrease in the number of procedures per year for TWA, while the number of WF remained relatively unchanged. There was, however, a transient increase in the frequency of TWA procedures performed from 2005 to 2008, following a decline in 2005. Patients with traumatic arthritis were more likely to receive WF. Rheumatoid patients were more likely to receive TWA. Patients receiving TWA tended to be older, female, be insured by Medicare, have a greater comorbidity burden, and have rheumatologic disease.

CONCLUSION

WF was performed nearly four times more frequently than TWA. A trend was demonstrated toward a decreasing number of TWA being implanted, and in patients with more underlying comorbidities. TWA was associated with a higher hospitalization charge, which may be expected given the higher implant costs associated with arthroplasty.

LEVEL OF EVIDENCE

Level II, prognostic study.

Complications Following Partial and Total Wrist Arthroplasty: A Single-Center Retrospective Review

PURPOSE

To describe our institution's experience with complications following partial and total wrist arthroplasty (TWA).

METHODS

We performed a retrospective review of 105 wrist surgeries in 100 patients who underwent surgery with prosthetic replacement of the distal radius, the proximal carpus, or both at a single institution. Patient factors including age, sex, body mass index, handedness, underlying disease, and previous injury were recorded. Outcomes focused particularly on postoperative complications and need for revision surgery.

RESULTS

Forty-seven TWAs, 52 distal radius hemiarthroplasties, and 6 proximal carpal hemiarthroplasties were reviewed with a mean follow-up duration of 35 ± 28 months. Overall complication and revision rates were 51% (53 of 105) and 39% (41 of 105), respectively. Postoperative contracture accounted for the largest number of complications needing additional surgery (20%), followed by component failure (15%). Deep infections occurred in 2 TWAs and 1 distal radius hemiarthroplasty and required removal of hardware, antibiotic spacer placement, and a prolonged course of intravenous antibiotics prior to a definitive operation. Of those patients requiring additional surgery, 41% (n = 10) underwent at least 2 procedures, and 10% (n = 4) underwent at least 6 additional surgeries.

CONCLUSIONS

Although TWA and partial wrist arthroplasty are attractive treatment options for the painful arthritic wrist, there remains a noteworthy potential for complications requiring additional surgery. A detailed understanding of these risks is essential for surgeons so that patients may be counseled accordingly and that alternative treatment options may be considered.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.

The Effect of Midcarpal Versus Total Wrist Fusion on the Hand's Load Distribution During Gripping

PURPOSE

To analyze the total grip force and load distribution of the hand with midcarpal fusion (MCF) and total wrist fusion (TWF).

METHODS

Twelve patients with unilateral TWF and 12 patients with unilateral MCF were assessed at an average 64 months (range, 19-100 months) postoperatively. The total grip force and load distribution of both hands were measured by the Manugraphy system using 3 cylinder sizes. The load applied to 7 anatomical areas of the hand during cylinder grip was analyzed, comparing the operated and the nonsurgical hands.

RESULTS

For the 100 mm and 150 mm cylinders, a significantly lower total grip force was found in hands operated with either TWF or MCF. For the 200 mm cylinder, there was a significant difference between nonsurgical hands and those with MCF but not between nonsurgical hands and those with TWF. For the 100 mm cylinder, the difference between nonsurgical and operated hands was greater in hands with TWF than those with MCF. For the load distribution of the hand, no differences between the operated and the nonsurgical hand were found for either MCF or TWF.

CONCLUSIONS

MFC and TWF resulted in a reduced cylinder grip force. With respect to the load distribution, neither procedure influenced the relative contribution that each area of the hand produced during cylinder grip.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic III.

Can Total Wrist Arthroplasty Be an Option for Treatment of Highly Comminuted Distal Radius Fracture in Selected Patients? Preliminary Experience with Two Cases

We present two case reports of successful primary shortening of the forearm and total wrist arthroplasty (TWA) using the new angle-stable Maestro Wrist Reconstructive System (WRS) for treatment of highly comminuted distal radius fracture in selected autonomous patients. In a 56-year-old male patient with adequate bone stock, insertion of the noncemented Maestro WRS was combined with ulnar shortening osteotomy. In an 84-year-old female patient with poor osteoporotic bone stock, insertion of the radial cemented Maestro WRS was combined with ulnar head resection. Both patients could resume their work without additional surgery after TWA. At the 1-year follow-up, there were no changes in position of either implant without signs of loosening, no impingement, and no instability of the distal radioulnar joint or the distal ulna stump. All clinical parameters (DASH score, pain through VAS, and grip strength) were satisfactory. Both patients reported that they would have the same procedure again. Further experience is needed to validate this concept.

Management of complications of wrist arthroplasty and wrist fusion

The human wrist joint is unique from functional and anatomic standpoints. Numerous articulations exist within the wrist that allow for many options for partial wrist fusion and arthroplasty. In cases of pancarpal disease, fusion or arthroplasty of the entire wrist joint can be performed. Because of the high functional demand of the wrist, many of these surgical options can fail, leading to devastating complications. This article addresses the types of fusions and arthroplasties available for the wrist and discusses the potential complications associated with each. Methods to prevent these complications are presented and those to treat them once they have occurred are discussed.

The quality of control groups in nonrandomized studies published in the Journal of Hand Surgery

PURPOSE

To evaluate control group selection in nonrandomized studies published in the Journal of Hand Surgery American (JHS).

METHODS

We reviewed all papers published in JHS in 2013 to identify studies that used nonrandomized control groups. Data collected included type of study design and control group characteristics. We then appraised studies to determine whether authors discussed confounding and selection bias and how they controlled for confounding.

RESULTS

Thirty-seven nonrandomized studies were published in JHS in 2013. The source of control was either the same institution as the study group, a different institution, a database, or not provided in the manuscript. Twenty-nine (78%) studies statistically compared key characteristics between control and study group. Confounding was controlled with matching, exclusion criteria, or regression analysis. Twenty-two (59%) papers explicitly discussed the threat of confounding and 18 (49%) identified sources of selection bias.

CONCLUSIONS

In our review of nonrandomized studies published in JHS, papers had well-defined controls that were similar to the study group, allowing for reasonable comparisons. However, we identified substantial confounding and bias that were not addressed as explicit limitations, which might lead the reader to overestimate the scientific validity of the data.

CLINICAL RELEVANCE

Incorporating a brief discussion of control group selection in scientific manuscripts should help readers interpret the study more appropriately. Authors, reviewers, and editors should strive to address this component of clinical importance.

Review article: Total wrist arthroplasty

18 English-language studies published between January 2003 and April 2013 were retrieved from the MEDLINE database using the key word 'total wrist arthroplasty'. In most studies, total wrist arthroplasty achieved improvement in pain and function over time. In a meta-analysis, the revision rate was 17% for third-generation implants. The survival rate was 92% for fourth-generation implants at 4 years. Complication rates ranged from 0% to 100% for third-generation implants and from 6% to 47% for fourth-generation implants. Results of total wrist arthroplasty vary greatly; longer-term studies are needed to determine its cost-effectiveness.

Results of Mannerfelt wrist arthrodesis for rheumatoid arthritis in relation to the position of the fused wrist

PURPOSE

The wrist is involved early in rheumatoid arthritis and is often severely affected. A stable wrist is crucial to good hand function, which often necessitates a fusion. One of the most commonly used techniques in rheumatoid patients is the Mannerfelt arthrodesis. In this retrospective study the outcome and the patient's subjective satisfaction are presented and compared to other techniques. Also the influence of the position of the wrist following a fusion procedure is analysed.

METHODS

Thirty-four wrists were retrospectively analysed using radiological measurements, functional scores such as the Disabilities of the Arm, Shoulder and Hand (DASH) and a pain assessment. The objective function of the hand with the fused wrist was assessed.

RESULTS

In 92.6% of wrists the patients rated their satisfaction as good or excellent. The mean DASH score post-operatively was 63.3. Of the wrists, 17 were fixed in a median flexed position of 13° and 17 wrists in a median extended position of 8°. There was no statistically significant correlation between the position of the wrist and the satisfaction or objective function. The rate of fusion was 94.1%.

CONCLUSIONS

The Mannerfelt arthrodesis achieves good results and provides a high rate of satisfaction and pain relief in our study. It has major advantages compared to other wrist fusion techniques in the rheumatoid patient. We could not show clear statistical evidence for better results in either a flexed or an extended position, but the ratings of the patients indicated better subjective results with a slightly extended position of the arthrodesis.