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The aim of this study was to systematically review clinical studies on the employed definitions of longitudinal forearm instabilities referred to as Essex-Lopresti (EL) injuries, interosseous membrane (IOM) injuries or longitudinal radioulnar dissociation.

A systematic literature search was performed in MEDLINE, Embase, CINAHL, Web of Science and Cochrane databases, adhering to PRISMA guidelines. All data on diagnosis and treatment were collected.

In total, 47 clinical studies involving 266 patients were included. Thirty-nine of 47 studies did not mention an IOM lesion as part of the EL injury. The amount of preoperative positive ulnar variance varied from >1 to >12 mm. Nine studies used some form of dynamic pre-operative or intraoperative test of longitudinal radioulnar instability.

There is no accepted definition of EL injury in the literature. In order to prevent underdetection of acute EL injury, a radial head fracture in a patient with wrist and/or forearm pain should raise awareness of the possibility of an EL injury. In this case, comparative radiographic studies and some form of dynamic assessment of longitudinal radioulnar stability should be performed.

The aim of this systematic review and meta-analysis was to compare re-rupture rates, complication rates, functional outcomes, as well as return to work (RTW)/sport (RTS) among different rehabilitation protocols following operative treatment of acute Achilles tendon ruptures.

Systematic review and meta-analysis was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Five databases were searched for randomized controlled trials (RCTs) comparing at least two rehabilitation protocols following surgical repair of acute Achilles tendon ruptures. Rehabilitation protocols were classified as a variation of either non-weightbearing (NWB) or weightbearing (WB) and immobilization (IM) or mobilization (M). The data collection consisted of re-ruptures, complications, and RTW/RTS.

Out of 2760 studies screened, 20 RCTs with 1007 patients were eligible. Fourteen studies included a group consisting of WB + M (Group 1), 11 of WB + IM (Group 2), 3 of NWB + M (Group 3), and 13 of NWB + IM (Group 4). Outcome parameters available for a meta-analysis were re-ruptures, complications, RTW, and RTS. Re-ruptures overall occurred in 2.7%, with prevalences ranging between 0.04 and 0.08. Major complications occurred in 2.6%, with prevalences ranging between 0.02 and 0.03. Minor complications occurred in 11.8% with prevalances ranging between 0.04 to 0.17. Comparing the odds-ratios between the four different groups revealed no significant differences with overall favourable results for group 1 (WB+M).

Early functional rehabilitation protocols with early ankle M and WB following surgical repair of acute Achilles tendon ruptures are safe and they apparently allow for a quicker RTW and RTS and seem to lead to favourable results.

The aim was to conduct a systematic literature review and meta-anaylsis to analyze the diagnostic accuracy of the external rotation stress test (ERST) for syndesmotic injuries.

The systematic review was conducted according to the PRISMA-P guidelines (Prospero ID: CRD42021282457). Four common databases were searched from inception to September 29, 2021. Eligible were any studies facilitating the ERST under fluoroscopy in a defined state of syndesmotic instability. Syndesmotic ligament-specific rupture must have been proven by MRI, arthroscopy, or controlled dissection (cadaver study). Two reviewers independently conducted each step of the systematic literature review. The risk of bias was assessed by the Quality Appraisal for Cadaveric Studies Score scale. The data analysis was performed qualitatively and quantitatively.

Eight studies were eligible for a qualitative analysis, and six studies were eligible for a quantitative analysis. All studies included were cadaver studies. The qualitative analysis comprised 94 specimens and revealed considerable heterogeneity. Six studies allowed for a quantitative analysis of the tibiofibular clear space (TFCS) and five studies for the medial clear space (MCS) during the ERST. The quantitative analysis of the TFCS revealed no significant differences between intact and any stage of syndesmotic injury. The MCS was able to differentiate between intact and 2-ligament- (Z = 2.04, P = 0.02), 3-ligament- (Z = 3.2, P = 0.001), and 3-ligament + deltoid ruptures (Z = 3.35, P < 0.001).

The ERST is the only noninvasive test to assess syndesmotic instability and can be conducted bilaterally. The uninjured contralateral side can serve as a baseline reference. Based on the conducted quantitative analysis, the MCS seems to be able to differentiate between stable (intact/1-ligament) and unstable (2-ligament/3-ligament) lesions.

The aim of this study was to comprehensively evaluate the efficacy of oblique lateral interbody fusion (OLIF) and transforaminal lumbar interbody fusion (TLIF) in the treatment of degenerative lumbar spondylolisthesis by meta-analysis.

A computer-based search of PubMed, Cochrane Library, Embase, Web of Science Core Collection databases, the China National Knowledge Infrastructure, China Biology Medicine, and Wanfang Digital Periodicals was conducted from the time of inception of each database to December 2021. The review process was conducted according to the PRISMA guidelines and registered in the PROSPERO database. Meta-analysis was performed using RevMan 5.4 software provided by the Cochrane Library.

Thirteen studies were included in the statistical analysis. One randomized controlled study and 12 cohort studies with 954 patients were included. In terms of operation time, intraoperative blood loss, Oswestry disability index score, intervertebral height, and complications, the OLIF group was better than the TLIF group, and the difference was statistically significant (P < 0.05). There was no significant difference between the two groups in terms of visual analogue scale score, lumbar lordosis or fused segment lordosis (P > 0.05).

Both OLIF and TLIF are effective surgical modalities in the treatment of degenerative lumbar spondylolisthesis. They achieve similar therapeutic effects, but OLIF is superior to TLIF in restoring intervertebral height. At the same time, OLIF has the advantages of short operation time and less intraoperative blood loss.

Fragility ankle fractures are traditionally managed conservatively or with open reduction internal fixation. Tibiotalocalcaneal (TTC) nailing is an alternative option for the geriatric patient. This meta-analysis provides the most detailed analysis of TTC nailing for fragility ankle fractures.

A systematic search was performed on MEDLINE, EMBASE, Cochrane Library, and Web of Science, identifying 14 studies for inclusion. Studies including patients with a fragility ankle fracture, defined according to NICE guidelines as a low-energy fracture obtained following a fall from standing height or less, that were treated with TTC nail were included. Patients with a previous fracture of the ipsilateral limb, fibular nails, and pathological fractures were excluded. This review was registered in PROSPERO (ID: CRD42021258893).

A total of 312 ankle fractures were included. The mean age was 77.3 years old. In this study, 26.9% were male, and 41.9% were diabetics. The pooled proportion of superficial infection was 10% (95% CI: 0.06–0.16), deep infection 8% (95% CI: 0.06–0.11), implant failure 11% (95% CI: 0.07–0.15), malunion 11% (95% CI: 0.06–0.18), and all-cause mortality 27% (95% CI: 0.20–0.34). The pooled mean post-operative Olerud–Molander ankle score was 54.07 (95% CI: 48.98–59.16). Egger’s test (P = 0.56) showed no significant publication bias.

TTC nailing is an adequate alternative option for fragility ankle fractures. However, current evidence includes mainly case series with inconsistent post-operative rehabilitation protocols. Prospective randomised control trials with long follow-up times and large cohort sizes are needed to guide the use of TTC nailing for ankle fractures.

The aim of this systematic review and meta-analysis was to evaluate whether volar locking plate (VLP) fixation leads to better clinical and radiological outcomes than those of closed reduction and cast immobilization for the treatment of distal radius fractures (DRFs).

A comprehensive literature search was performed in PubMed, Web of Science, and Cochrane databases up to January 2022. Inclusion criteria included randomized controlled trial (RCT) studies comparing VLP fixation with cast immobilization for DRFs. Investigated parameters were Patient-Rated Wrist Evaluation questionnaire, Disabilities of the Harm, Shoulder, and Hand score (DASH), range of motion (ROM), grip strength, quality of life (QoL), radiological outcome, and complication and reoperation rate, both at short- and mid-/long-term follow-up. Assessment of risk of bias and quality of evidence was performed with Downs and Black’s ‘Checklist for Measuring Quality’.

A total of 12 RCTs (1368 patients) were included. No difference was found for ROM, grip strength, QoL, and reoperation, while the DASH at 3 months was statistically better in the VLP group (P <  0.05). No clinical differences were confirmed at longer follow-up. From a radiological perspective, only radial inclination (4°) and ulnar variance (mean difference 1.1 mm) at >3 months reached statistical significance in favor of the VLP group (both P < 0.05). Fewer complications were found in the VLP group (P < 0.05), but they did not result in different reintervention rates.

This meta-analysis showed that the surgical approach leads to a better clinical outcome in the first months, better fracture alignment, and lower complication rate. However, no differences in the clinical outcomes have been confirmed after 3 months. Overall, these findings suggest operative treatment for people with higher functional demand requiring a faster recovery, while they support the benefit of a more conservative approach in less demanding patients.