Relationship Between Wrist Motion and Capitolunate Reduction in Four-Corner Arthrodesis

Surgical fixation techniques in four-corner fusion of the wrist: a systematic review of 1103 cases

BACKGROUND

Four-corner fusion (4CF) is a known treatment option for degenerative wrist conditions. Different techniques may be used and there is no general consensus on best implant. As such, it was the purpose of the current systematic review to compare fusion rates and outcomes depending on the fixation technique.

METHODS

The systematic review was registered in the international prospective register of systematic reviews (PROSPERO): CRD42020164301. It followed the PRISMA guidelines. Original articles were screened using the following databases: Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE and Web of Science Core Collection. Studies reporting on outcome for 4CF surgery were included. Studies with a minimum Level IV of evidence were considered eligible. Quality assessment was performed using the Methodological Index for Non-Randomized Studies (MINORS) criteria.

RESULTS

A total of 29 studies met the inclusion criteria, for a total of 1103 wrists. The mean age was 41.8 years (range 19-83). Mean follow-up overall was 43.5 months (range 24-146 months). Reported fusion weighted rates were >90% and did not differ significantly between techniques. Reoperations due to different reasons occurred in 135 (12%) of all 1103. There was significant data heterogeneity regarding fusion rates (I² = 70%). Inconsistency and heterogeneity in data reporting did not allow meta-analysis with direct data pooling and comparison of subgroups.

CONCLUSIONS

Satisfactory fusion rates (over 90%) can be achieved independent of the fixation technique used in 4-corner arthrodesis. Due to the high data heterogeneity and reporting inconsistency across studies, no statements regarding PROMs, ROM or grip strength can be made.

LEVEL OF EVIDENCE

Systematic Review of Level IV Studies.

Four-corner arthrodesis with a dorsal locking plate: 4-9-year follow-up

We report the outcomes of four-corner arthrodesis for advanced wrist collapse in 50 patients (51 wrists) using a dorsal locking plate. At a mean follow-up of 6 years (range 4-9), pain was significantly reduced and wrist function was significantly improved compared with preoperative status. After four-corner arthrodesis, grip strength was 80% of the contralateral side, and wrist motion averaged 50° flexion-extension and 30° radioulnar deviation. Immobilization time was 5 weeks (4-6) and sick-leave was 3 months (2-5) following surgery. There were seven nonunions (14%) that underwent repeat arthrodesis. Three wrists were later converted to total arthrodesis due to persisting pain. Radiographic dorsal impingement was found in five wrists after four-corner arthrodesis and did not require reoperation. The outcomes appear not remarkably different from those reported using other fixation methods other than an apparent earlier return to activities.Level of evidence: IV.

Clinical and radiological outcomes of 40 cases of SLAC and SNAC wrist treated by four-corner arthrodesis with locking plate

The treatment of scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC) wrist varies. No clear consensus exists on surgical indications. Scaphoid excision and four-corner arthrodesis with locking plate is one of preferred treatments for these lesions. The purpose of this study was to assess the clinical and radiological outcomes of locking plates for treating SNAC and SLAC wrist after a mean follow-up of 5 years and to compare these outcomes with the results reported in the literature. A retrospective study was conducted in two hospitals, involving 40 patients who underwent scaphoid excision and four-corner arthrodesis with locking plate between January 2006 and September 2016. All patients were reviewed as outpatients with clinical and radiographic measurements. At the last follow-up, the mean pain level on visual analog scale (VAS) was 2.5/10 [0-7] (SD: 1.7). Patients had a mean flexion of 46% and a mean extension of 46% compared to the contralateral side. An 18% gain was observed in grip strength. The mean postoperative QuickDASH score was 30 [0-57] (SD: 15.3). Seventy percent of patients were satisfied with the operation. Complete (all four joint interfaces) joint space fusion was achieved in 55% of patients. Only one patient (2.5%) had no joint fusion. The joint between the lunate and the capitate was fused in 38 patients (95%). Nine patients suffered complications; eight of them required surgical revision (20%). Four-corner arthrodesis with locking plate is a valuable surgical technique for treating SLAC and SNAC wrist because it preserve satisfactory range of motion and grip strength (64% compared to the non-operated side), maintains the height of the carpus and prevents the premature appearance of radiocarpal osteoarthritis, as long as the technical challenges of this procedure are mastered.

Proximal Row Carpectomy versus Four-Corner Arthrodesis for the Treatment of Scapholunate Advanced Collapse/Scaphoid Nonunion Advanced Collapse Wrist: A Cost-Utility Analysis

BACKGROUND

Two mainstay surgical options for salvage in scapholunate advanced collapse and scaphoid nonunion advanced collapse are proximal row carpectomy and four-corner arthrodesis. This study evaluates the cost-utility of proximal row carpectomy versus three methods of four-corner arthrodesis for the treatment of scapholunate advanced collapse/scaphoid nonunion advanced collapse wrist.

METHODS

A cost-utility analysis was performed in accordance with the Second Panel on Cost-Effectiveness in Health and Medicine. A comprehensive literature review was performed to obtain the probability of potential complications. Costs were derived using both societal and health care sector perspectives. A visual analogue scale survey of expert hand surgeons estimated utilities. Overall cost, probabilities, and quality-adjusted life-years were used to complete a decision tree analysis. Both deterministic and probabilistic sensitivity analyses were performed.

RESULTS

Forty studies yielding 1730 scapholunate advanced collapse/scaphoid nonunion advanced collapse wrists were identified. Decision tree analysis determined that both four-corner arthrodesis with screw fixation and proximal row carpectomy were cost-effective options, but four-corner arthrodesis with screw was the optimal treatment strategy. Four-corner arthrodesis with Kirschner-wire fixation and four-corner arthrodesis with plate fixation were dominated (inferior) strategies and therefore not cost-effective. One-way sensitivity analysis demonstrated that when the quality-adjusted life-years for a successful four-corner arthrodesis with screw fixation are lower than 26.36, proximal row carpectomy becomes the optimal strategy. However, multivariate probabilistic sensitivity analysis confirmed the results of our model.

CONCLUSIONS

Four-corner arthrodesis with screw fixation and proximal row carpectomy are both cost-effective treatment options for scapholunate advanced collapse/scaphoid nonunion advanced collapse wrist because of their lower complication profile and high efficacy, with four-corner arthrodesis with screw as the most cost-effective treatment. Four-corner arthrodesis with plate and Kirschner-wire fixation should be avoided from a cost-effectiveness standpoint.

Pain, impaired functioning, poor satisfaction and diminished health status eight years following perilunate (fracture) dislocations

Purpose: Perilunate (fracture) dislocations are rare injuries and diminished functional outcomes are reported. However, Patient Reported Outcomes (PROs) following these injuries are rarely described. The aim of this study was to investigate the long-term impact of perilunate (fracture) dislocations using a range of measures, including pain, function, and quality of life.Materials and Methods: This cross-sectional study was conducted from January 2016 until March 2016. Eleven patients who had suffered from perilunate (fracture) dislocations between August 1996 and January 2014 were matched on age and gender with 22 healthy controls. Functional outcome included range of motion and grip strength measurements. The Patient Reported Outcomes included: Patient Reported Wrist Evaluation, Disability of Arm, Shoulder and Hand questionnaire, Michigan Hand Questionnaire and the Short Form-36.Results: The 11 patients that were included (9 males) had a median age at injury of 38 years (IQR 33; 54) and median follow up of 97 months (IQR 84-193). Flexion/extension (mean difference -60°, 95% CI -76, -43, p < 0.001) and ulnar/radial deviation (mean difference -28°, 95% CI -38, -18, p < 0.001) were significantly diminished in patients following perilunate (fracture) dislocations. Grip strength was not affected. The patients experienced significantly more pain as assessed on all pain subscales. Physical functioning was significantly worse in the group with perilunate (fracture) dislocations as assessed on all function subscales, except the PRWE function score and the subscale physical functioning of the Short Form-36. Satisfaction as measured with the Michigan Hand Questionnaire satisfaction subscale (mean difference -36, 95% CI -57, -16, p = 0.002) was also reported poorer. No difference was found regarding work participation.Conclusions: A perilunate (fracture) dislocation has a significant impact on everyday life, as patients experience diminished range of motion, pain, diminished physical functioning, diminished satisfaction and report lower general health status than healthy controls. However, no consequences for work participation were found in this study. Level of evidence 3.Implications for rehabilitationFlexion/extension and ulnar/radial deviation remains limited following perilunate (fracture) dislocations.Grip strength is not diminished in patients with perilunate (fracture) dislocations.Pain, restrictions in physical functioning, diminished satisfaction and lower general health status are likely to be present following perilunate (fracture) dislocations.If conservative treatment including pain medication and rehabilitation strategies do not relief pain following perilunate (fracture) dislocations, surgical treatment options such as wrist denervation or arthrodesis should be considered.

Treatment Outcomes of 4-Corner Arthrodesis for Patients With Advanced Carpal Collapse: An Average of 4 Years' Follow-Up Comparing 2 Different Plate Types

PURPOSE

The objective was to investigate the clinical and subjective outcomes of patients after 4-corner arthrodesis (FCA) for scapholunate advanced collapse (SLAC) or scaphoid nonunion advanced collapse (SNAC) and to analyze complications. Furthermore, we compared the long-term results of a first-generation nonlocking plate (Spider) and a plate with a locking screw design (Flower plate).

METHODS

In a retrospective cohort study, we included 39 patients with stage II or III SLAC or SNAC who underwent FCA. Twenty wrists were treated with a nonlocking plate and 19 with a locking plate. Patients completed the Patient-Rated Wrist Evaluation (PRWE) and the Michigan Hand Outcomes Questionnaire (MHQ). Active range of wrist motion, radiological signs such as impingement, and signs of implant loosening and nonunion, as well as postoperative complications, were assessed.

RESULTS

After a median postoperative follow-up time of 4.1 years, the PRWE score was 18 and the total MHQ score 79. Patient-reported and clinical outcomes were similar for the 2 plate types. Wrists fixed with the nonlocking plate had more dorsal impingements and loosening than wrists fixed with a locking plate. One nonunion was noted in the nonlocking plate group, and a single case of implant failure was seen for each plate type. A total of 5 patients with a nonlocking plate incurred postoperative complications that required further medical treatment.

CONCLUSIONS

FCA for patients with stage II or III SLAC or SNAC yields positive clinical and subjective outcomes. Based on the high complication rate following FCA with a nonlocking plate, we no longer use this implant and recommend fixation with a locking screw plate.

TYPE OF STUDY/LEVEL OF EVIDENCE

Therapeutic IV.