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Femoroacetabular Impingement Treatment Comparison

Femoroacetabular Impingement Treatment Comparison


This study conducted a comprehensive comparison between two surgical approaches, hip arthroscopy and open surgical dislocation, for the treatment of femoroacetabular impingement (FAI) in young athletes, with a specific focus on mitigating early hip osteoarthritis. The research team meticulously searched through multiple databases to identify relevant controlled trials, ultimately selecting nine studies for rigorous analysis.


Using Review Manager (RevMan) 5.3 software, the gathered data underwent thorough examination, aiming to elucidate the efficacy of each surgical method. The meta-analysis outcomes revealed intriguing insights into the comparative effectiveness of hip arthroscopy versus open surgical dislocation.


Firstly, concerning the improvement of the alpha angle, a critical measure in FAI management, no statistically significant difference was observed between the two groups. Similarly, the Modified Harris Hip Score (mHHS), utilized to gauge hip function, showed no significant discrepancy between the hip arthroscopy and open surgical dislocation groups after a 12-month follow-up.


However, the analysis unveiled noteworthy distinctions in other outcome measures. The Nonarthritic Hip Score (NAHS) exhibited a significantly higher improvement rate in the hip arthroscopy group compared to the open surgical dislocation group after the same follow-up period. This finding suggests that hip arthroscopy may yield superior outcomes in terms of preserving hip health and function over time.


Furthermore, the study shed light on the complication rate associated with each surgical approach. Remarkably, no substantial difference was found between the two groups, indicating comparable safety profiles.


Of particular significance was the reoperation rate, a crucial metric reflecting the need for additional interventions. Here, the meta-analysis demonstrated a significantly lower reoperation rate in the hip arthroscopy group compared to the open surgical dislocation group. This finding suggests that hip arthroscopy may not only offer favorable outcomes in terms of hip function but also reduce the likelihood of requiring further surgical interventions.


While these findings provide compelling evidence supporting the efficacy of hip arthroscopy in FAI treatment, it’s essential to interpret them with caution. Further high-quality studies are warranted to corroborate these conclusions and provide a more nuanced understanding of the optimal treatment strategy for FAI in young athletes. By expanding our knowledge in this area, healthcare practitioners can make more informed decisions to optimize patient outcomes and enhance quality of life for individuals affected by FAI.


In recent years, the global focus on health and well-being has spurred a profound cultural shift towards maintaining fitness through regular exercise. While this shift has undeniably brought numerous health benefits, it has also led to a rise in exercise-related conditions. Among these, femoroacetabular impingement (FAI) has emerged as a significant concern, particularly among individuals who engage in vigorous physical activities or sports.


FAI occurs when there is abnormal contact between the femoral head and the acetabulum of the hip joint, often due to structural abnormalities such as a misshapen femoral head or acetabular rim. This abnormal contact can lead to damage to the articular cartilage and labrum of the hip joint, resulting in pain, stiffness, and eventually, hip osteoarthritis (OA). The prevalence of FAI is notable, affecting approximately 10% to 15% of individuals, with the most common age range being 20 to 40 years old.


The clinical presentation of FAI can vary, but commonly includes groin pain, particularly during activities that involve hip flexion, such as squatting or lifting the leg. As the condition progresses, individuals may experience pain during everyday tasks like driving or putting on socks, significantly impacting their quality of life. Recognizing and addressing FAI in its early stages is crucial to prevent further cartilage damage and the eventual development of hip OA.


Several factors can contribute to the development of FAI, including structural abnormalities, repetitive hip joint motion in athletes, developmental hip conditions like developmental dysplasia of the hip (DDH), and iatrogenic injuries resulting from surgical procedures or fractures. Surgical intervention is often necessary to address FAI effectively, and two primary approaches are commonly employed: hip arthroscopy and surgical dislocation.


Hip arthroscopy is a minimally invasive surgical technique that allows for visualization and treatment of intra-articular hip pathology through small incisions. It offers several advantages, including fewer complications, shorter recovery times, and less postoperative pain compared to traditional open surgical approaches. However, postoperative immobilization may be required to minimize the risk of complications, and rehabilitation can be challenging due to joint stiffness and soft tissue adhesions.


On the other hand, surgical dislocation involves a more extensive open surgical approach that provides greater access to the hip joint. While it may be associated with longer recovery times and a higher risk of complications compared to hip arthroscopy, surgical dislocation remains a valuable option, particularly in cases where a more comprehensive surgical correction is necessary.


To assess the effectiveness of these treatment approaches, a comprehensive meta-analysis was conducted, aiming to provide clinicians with evidence-based insights into the optimal management of FAI. By understanding the strengths and limitations of each approach, healthcare professionals can make informed decisions tailored to the individual needs of patients, ultimately optimizing outcomes and improving quality of life for those affected by FAI.


This study focused on patients diagnosed with femoroacetabular impingement (FAI). The intervention group underwent hip arthroscopy for FAI treatment, while the control group received open surgical dislocation for the same condition. The study aimed to assess the effects of these interventions using specific outcome measures:


  1. Improvement of the alpha angle.
  2. Modified Harris Hip Score (mHHS) after 12 months of follow-up.
  3. Nonarthritic Hip Score (NAHS) after 12 months of follow-up.
  4. Reoperation rate.
  5. Complication rate.


To gather relevant literature, a comprehensive search was conducted across databases including Cochrane Library, PubMed, Embase, and Web of Science. Search terms like “surgical dislocation,” “arthroscopy,” and “femoroacetabular impingement” were used. The search period spanned from the establishment of the databases until May 2023.


Data extraction and quality assessment were conducted meticulously. Abstracts were initially screened, followed by a thorough examination of full texts. This process involved two independent researchers, and any discrepancies were resolved through discussion or consultation with a third researcher. Extracted information included study details, population characteristics, sample size, intervention specifics, outcome measures, and other relevant data.


The quality of each study was assessed using the Quality Assessment of Diagnostic Accuracy Studies (QUADAS) tool, recommended by the Cochrane Collaboration. The QUADAS tool evaluates 14 items covering various aspects such as patient spectrum, reference standard, bias, and study withdrawals. Each item is scored as ‘yes,’ ‘no,’ or ‘unclear.’ Studies with a QUADAS score of less than 10 points were identified as low methodological quality.


By employing rigorous methodology and assessment criteria, this study aimed to provide valuable insights into the comparative effectiveness of hip arthroscopy and open surgical dislocation for treating FAI, thereby informing clinical practice and decision-making processes.

Inclusion Criteria

The inclusion criteria for this review encompassed published controlled trials focusing on the comparative effects of hip arthroscopy versus open surgical dislocation in individuals diagnosed with femoroacetabular impingement (FAI). Only original articles meeting these criteria were considered eligible for inclusion. This selection process aimed to ensure the inclusion of robust and methodologically sound studies that directly compared the outcomes and efficacy of hip arthroscopy and open surgical dislocation techniques in managing FAI. By adhering to these stringent criteria, the review sought to provide a comprehensive and reliable synthesis of evidence to inform clinical decision-making and optimize treatment strategies for individuals with FAI.

Exclusion Criteria

In the analysis, exclusion criteria were applied to refine the selection of relevant literature. Specifically, we excluded animal trials and publications categorized as Letters, reviews, conference abstracts, and duplicates. This stringent approach aimed to focus our analysis solely on primary research studies involving human subjects, ensuring the reliability and applicability of the findings to our research objectives. By excluding non-primary sources and animal studies, we aimed to enhance the quality and relevance of the literature included in our analysis, thereby strengthening the validity of our research outcomes.

Statistical Analysis

In this meta-analysis, Review Manager (RevMan) was employed to synthesize the effects of various studies. Standardized mean difference (SMD) and 95% confidence interval (CI) were used to combine the effects, considering that our study’s outcome measures were assessed using different instruments and yielded diverse scores. To evaluate heterogeneity among studies, we utilized Chi-square tests. If the p-value exceeded 0.1 and I2 was below 50%, indicating homogeneity, we employed a fixed-effects model meta-analysis. Conversely, if the p-value was less than 0.1 and I2 equaled or surpassed 50%, suggesting heterogeneity, we investigated potential sources of variation. In cases where no clinical heterogeneity was discerned, we conducted a random-effects model meta-analysis. Furthermore, we conducted subgroup analyses to investigate potential discrepancies in qualitative factors. These rigorous methodologies ensure the robustness and reliability of our meta-analysis findings, facilitating comprehensive insights into the research question at hand.


The study conducted a systematic review and meta-analysis to evaluate the efficacy of hip arthroscopy as a treatment for femoroacetabular impingement (FAI). A total of 9 studies were included in the analysis after thorough screening and assessment, adhering to PRISMA guidelines. The meta-analysis revealed that hip arthroscopy did not significantly improve the alpha angle compared to the control group, indicating limited efficacy in correcting FAI-related structural abnormalities.


However, significant improvements were observed in the Non-Arthritic Hip Score (NAHS) in the hip arthroscopy group compared to the control group, suggesting enhanced functional outcomes following the procedure. Furthermore, the reoperation rate was notably lower in the hip arthroscopy group, indicating the procedure’s effectiveness in reducing the need for additional surgeries.


On the other hand, the complication rate did not significantly differ between the hip arthroscopy group and the control group, suggesting comparable safety profiles. Sensitivity analyses were conducted to ensure the robustness of the findings, and tests for publication bias indicated the stability of the research results.


Overall, while hip arthroscopy may not substantially improve structural abnormalities associated with FAI, it appears to offer favorable functional outcomes and reduced reoperation rates. Further research is warranted to elucidate long-term efficacy and safety outcomes of hip arthroscopy in FAI management.


Femoroacetabular impingement (FAI) was initially elucidated by Ganz et al. in 1999, who defined it as pathological repetitive contact within the hip joint due to anatomical abnormalities or excessive hip joint motion. FAI typically stems from irregularities in anatomical structures and is classified into cam impingement, pincer impingement, and mixed type. Cam impingement involves abnormal hyperplasia at the head-neck junction of the femur, while pincer impingement results from acetabular abnormalities, commonly seen in middle-aged women active in sports. Modern hip arthroscopy has undergone significant advancements, offering clearer visualization of hip joint structures and less soft tissue damage compared to open surgery. Despite its benefits, hip arthroscopy may pose risks such as traction injury and postoperative instability.


In recent years, hip arthroscopy has gained prominence for treating FAI deformities. A meta-analysis encompassing 458 patients undergoing hip arthroscopy and 461 controls revealed that hip arthroscopy led to satisfactory improvements in alpha angle and nonarthritic hip score (NAHS) compared to controls. However, there was no significant difference in the Modified Harris Hip Score (mHHS) between the groups after a 12-month follow-up. Importantly, the reoperation rate was significantly lower in the hip arthroscopy group, indicating its efficacy in reducing the need for subsequent surgeries. However, no significant difference in complication rates was observed between the groups.


Despite these promising findings, limitations such as language restrictions and potential biases underscore the need for further high-quality studies to validate the efficacy of hip arthroscopy in FAI treatment. Overall, hip arthroscopy appears to be a favorable option for FAI patients, offering improved hip function and lower reoperation rates.

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