Re-operation rate after surgical treatment of osteochondral lesions of the talus in paediatric and adolescent patients

Osteoperiosteal versus osteochondral for autologous transplantation in the treatment of large cystic osteochondral lesions of the talus

BACKGROUND

Osteochondral lesions of the talus (OLTs) with a large subchondral cyst have been shown to have inferior clinical outcomes after reparative techniques. Replacement techniques such as autologous osteoperiosteal transplantation (AOPT) and autologous osteochondral transplantation (AOCT) are indicated for large lesions. The aim of the study was to compare the short-term clinical and radiographic outcomes between patients undergoing AOPT and those undergoing AOCT for large cystic OLTs.

METHODS

Patients who underwent AOPT or AOCT for medial large cystic OLTs between May 2019 and June 2023 were retrospectively evaluated. According to their characteristics, 1:1 propensity-score matching was performed, and 65 pairs of patients with ages ranging from 18 to 60 years old were recruited. Clinical outcomes were compared between both groups with the American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score and Visual Analogue Scale (VAS). The Ankle Activity Score (AAS), time to return to sports activity (RTA), rate of return to sports level, complications, and results of a subjective evaluation were also collected. The integrity of subchondral bone and the quality of repaired cartilage were evaluated using the Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score 12 months postoperatively. Second-look arthroscopy was performed 12 months postoperatively, and the cartilage repair was assessed with the criteria of the International Cartilage Repair Society (ICRS).

RESULTS

The within-group comparison showed significant improvements in pain severity and function in both groups post-treatment compared with pre-treatment. Between-group analysis, however, showed no significant statistical difference between groups in any of the variables for clinical and radiographic outcomes, except for donor-site morbidity of the AOPT group, which showed a better outcome compared to the AOCT group.

CONCLUSIONS

In the treatment of large cystic OLTs, for patients with a chondral lesion of the patellofemoral joint that is unsuitable for AOCT, AOPT may be a safe and effective choice, with lower donor-site morbidity of the normal knee joint.

Retroarticular drilling for osteochondritis dissecans of the talus: A systematic review

BACKGROUND

Opinions differ on the optimal treatment for stable talar osteochondritis dissecans (OCD) with intact cartilage. Some recommend conservative management, while others prefer surgical care, which includes debridement and micro-fractures, transarticular drilling through a direct or medial malleolus approach and retroarticular drilling. The rationale behind retroarticular drilling is to induce bone marrow healing without touching the intact cartilage. The goal of this systematic review is to summarize the clinical outcomes of retroarticular drilling as a standalone procedure for stable talar OCD with intact cartilage.

PATIENTS AND METHODS

A systematic review of the literature prospectively registered in the PROSPERO register was performed along the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Medline, EMBASE and Evidence-Based Medicine databases were searched from inception to December 2021 for retroarticular drilling for stable talar OCD with an intact cartilage. Two independent evaluators screened the search results, selected the articles to be included in the analysis and assessed the methodological quality of all included articles with the Newcastle-Ottawa Scale (NOS).

RESULTS

Twelve studies, on 99 patients were included in the final analysis. Methodological quality was poor for all the included studies. High heterogeneity prevented any pooling or meta-analysis, but favorable clinical results were reported according to excellent post-intervention scores on the American Orthopedic Foot and Anke Score (AOFAS), ranging from 88.9 to 100. There was also significant improvement in pain as measured by the Visual Analog Scale (VAS), ranging between 2.3 and 5.9.

DISCUSSION

Favorable results seem to be achieved with retroarticular drilling without grafting for stable talar OCD with intact cartilage, but more powered comparative studies between surgical options and conservative management are needed to establish the gold standard treatment.

LEVEL OF EVIDENCE

IV.

Operative management of osteochondral lesions of the talus: 2024 recommendations of the working group 'clinical tissue regeneration' of the German Society of Orthopedics and Traumatology (DGOU)

The working group 'Clinical Tissue Regeneration' of the German Society of Orthopedics and Traumatology (DGOU) issues this paper with updating its guidelines. Literature was analyzed regarding different topics relevant to osteochondral lesions of the talus (OLT) treatment. This process concluded with a statement for each topic reflecting the best scientific evidence available with a grade of recommendation. All group members rated the statements to identify possible gaps between literature and current clinical practice. Fixation of a vital bony fragment should be considered in large fragments. In children with open physis, retrograde drilling seems to work better than in adults, but even there, the revision rate reaches 50%. The literature supports debridement with bone marrow stimulation (BMS) in lesions smaller than 1.0 cm² without bony defect. The additional use of a scaffold can be recommended in lesions larger than 1.0 cm². For other scaffolds besides AMIC®/Chondro-Gide®, there is only limited evidence. Systematic reviews report good to excellent clinical results in 87% of the patients after osteochondral transplantation (OCT), but donor site morbidity is of concern, reaching 16.9%. There is no evidence of any additional benefit from autologous chondrocyte implantation (ACI). Minced cartilage lacks any supporting data. Metallic resurfacing of OLT can only be recommended as a second-line treatment. A medial malleolar osteotomy has a minor effect on the clinical outcome compared to the many other factors influencing the clinical result.

A Systematic Review of the Retrograde Drilling Approach for Osteochondral Lesion of the Talus: Questioning Surgical Approaches, Outcome Evaluation and Gender-Related Differences

BACKGROUND

Retrograde drilling (RD) is a minimally invasive surgical procedure mainly used for non-displaced osteochondral lesions (OCL) of the talus, dealing with subchondral necrotic sclerotic lesions or subchondral cysts without inducing iatrogenic articular cartilage injury, allowing the revascularization of the subchondral bone and new bone formation.

METHODS

This systematic review collected and analyzed the clinical studies of the last 10 years of literature, focusing not only on the clinical results but also on patients' related factors (gender, BMI, age and complications).

RESULTS

Sixteen clinical studies were retrieved, and differences in the type of study, follow-up, number and age of patients, lesion type, dimensions, grades and comparison groups were observed, making it difficult to draw conclusions. Nevertheless, lesions on which RD showed the best results were those of I-III grades and not exceeding 150 mm² in size, showing overall positive results, a good rate of patient satisfaction, improvements in clinical scores, pain reduction and return to daily activities and sports.

CONCLUSIONS

There are still few studies dealing with the issue of post-surgical complications and gender-related responses. Further clinical or preclinical studies are thus mandatory to underline the success of this technique, also in light of gender differences.

Clinical and radiological outcomes of surgically treated osteochondral lesions of the talus in children and adolescents

Background

Osteochondral lesions of the talus are uncommon in children and adolescents. Surgical procedures differ from those used for adults to avoid iatrogenic physeal injuries. This study aimed to evaluate the clinical and radiological outcomes of surgical treatment in pediatric patients with osteochondral lesions, specifically investigating the patient age and the status of distal tibial physis as factors associated with surgical success.

Methods

We retrospectively reviewed 28 patients who had symptomatic osteochondral lesions of the talus that were treated surgically between 2003 and 2016. If the lesion was stable and articular cartilage was intact, retrograde drilling was performed under fluoroscopic guidance. Lesions with detached overlying cartilages were treated by debridement of the cartilage combined with microfracture and drilling. Radiographic outcomes, American Orthopaedic Foot & Ankle Society ankle-hindfoot score, and skeletal maturity were evaluated.

Results

Radiological improvement was observed in 24 (24/28, 86%) patients and complete and incomplete healing in 8 and 16 patients, respectively. Changes in pain grades, American Orthopaedic Foot & Ankle Society scores, and radiological healing after surgery were significant (pain grade, p < 0.001; American Orthopaedic Foot & Ankle Society, p = 0.018; radiological healing, p < 0.001). In addition, patients in the younger age group (≤13 years) showed greater improvements in pain grades than older patients (p = 0.02). Improvement in pain grade after surgery was better in the skeletally immature group than in the skeletally mature group (p = 0.048).

Conclusion

Clinical and radiological improvements were observed after surgical treatment. The younger age group and open physis group showed more pain improvement.

Level of evidence

Therapeutic level IV.

Juvenile Osteochondral Lesions of the Talus: Current Concepts Review and an Update on the Literature

Osteochondral lesions of the talus (OLTs) are lesions that occur before the physis closes and are frequently associated with acute ankle trauma. These lesions are often difficult to diagnose due to swelling and inflammation that are present after the initial injury. A growing body of literature has assessed the effects of OLTs in the adult population. However, the literature examining these lesions in the juvenile population is sparse. The purpose of this review is to provide a thorough understanding of OLTs, with a specific focus on the juvenile population. We evaluate the recent literature regarding the outcomes of various surgical treatment; modalities in the pediatric patient. While the outcomes after surgical treatment of pediatric OLTs are generally favorable, the paucity of investigation in this demographic is alarming. Further research is needed to better inform practitioners and families regarding these outcomes, as treatment plans are highly dependent on the individual patient in question.

Arthroscopically assisted versus open reduction internal fixation for ankle fractures: a systematic review and meta-analysis

BACKGROUND

Open reduction and internal fixation were routinely used to treat patients with unstable ankle fractures (ORIF). However, some patients may experience persistent ankle pain and disability following ORIF due to untreated intra-articular lesions. Moreover, ankle fractures may be treated with arthroscopically assisted reduction and internal fixation (ARIF). This study aimed to compare the feasibility and benefits of ARIF versus ORIF for ankle fractures.

METHODS

We performed this meta-analysis in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. A systematic search was conducted for comparative studies comparing ARIF and ORIF for ankle fractures. Nine studies were included in the analysis of clinical and secondary outcomes. In summary, we calculated the mean difference (MD), risk ratio (RR), confidence interval, and p value.

RESULTS

This meta-analysis demonstrated that the ARIF group achieved a higher Olerud-Molander Ankle (OMA) score (MD: 6.6; 95% CI 0.20 to 13.0; p = 0.04) and lower visual analog scale (VAS) score (MD: - 0.36; 95% CI - 0.64 to - 0.10; p = 0.01) at the final follow-up. Nevertheless, the smallest treatment effect of OMA score and VAS score did not exceed the minimum clinically important difference (MCID). There were longer surgery time (MD: 15.0; 95% CI 10.7 to 19.3; p < 0.01) and lower complication rates (RR: 0.53; 95% CI 0.31 to 0.89; p = 0.02) in ARIF compared with ORIF. The random-effect model suggested no significant difference in the arthritis change rate between the two groups.

CONCLUSION

In summary, the results of this meta-analysis indicated that ARIF and ORIF are comparable in terms of providing pain relief and improving function for patients with ankle fractures. Therefore, the choice between the two techniques should be based on the patient's individual factors and the surgeon's personal preference.

Autologous Matrix-Induced Chondrogenesis (AMIC) for Osteochondral Defects of the Talus: A Systematic Review

Autologous matrix-induced chondrogenesis (AMIC) has been advocated for the management of talar osteochondral lesions (OCLs). This systematic review, which was conducted according to the PRISMA 2020 guidelines, investigated the clinical and imaging efficacy and safety of the AMIC technique in the management of OCLs of the talus. Only studies investigating AMIC for talar chondral defects that were published in peer-reviewed journals were considered. In September 2022, the following databases were accessed: PubMed, Web of Science, Google Scholar, and Embase. Data on the visual analogue scale (VAS), American Orthopaedic Foot and Ankle Score (AOFAS), Tegner activity scale, and Foot Function Index (FFI) were retrieved. To evaluate the morphological MRI findings, data obtained from the magnetic resonance observation of cartilage repair tissue (MOCART) scores were evaluated. Data on hypertrophy, failures, and revision surgeries were also collected. Data from 778 patients (39% women, 61% men) were collected. The mean length of the follow-up was 37.4 ± 16.1 months. The mean age of the patients was 36.4 ± 5.1 years, and the mean BMI was 26.1 ± 1.6 kg/m2. The mean defect size was 2.1 ± 1.9 cm2. Following the AMIC technique, patients demonstrated an improved VAS (p < 0.001), AOFAS (p < 0.001), and FFI (p = 0.02) score. The MOCART score also improved from the baseline (p = 0.03). No difference was observed in the Tegner score (p = 0.08). No graft delamination and hypertrophy were reported in 353 patients. 7.8% (44 of 564) of patients required revision surgeries, and 6.2% (32 of 515) of patients were considered failures. The AMIC technique could be effective in improving symptoms and the function of chondral defects of the talus.

Paediatric ankle cartilage lesions: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle

BACKGROUND

The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on "Pediatric Ankle Cartilage Lesions" developed at the 2019 International Consensus Meeting on Cartilage Repair of the Ankle.

METHODS

Forty-three international experts in cartilage repair of the ankle representing 20 countries convened to participate in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within four working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed upon in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterised as follows: consensus: 51-74%; strong consensus: 75-99%; unanimous: 100%.

RESULTS

A total of 12 statements on paediatric ankle cartilage lesions reached consensus during the 2019 International Consensus Meeting on Cartilage Repair of the Ankle. Five achieved unanimous support, and seven reached strong consensus (>75% agreement). All statements reached at least 84% agreement.

CONCLUSIONS

This international consensus derived from leaders in the field will assist clinicians with the management of paediatric ankle cartilage lesions.