scholarly journals Magnetic Tracking: A Novel Method of Assessing Anterior Cruciate Ligament Deficiency

2006 ◽  
Vol 88 (1) ◽  
pp. 16-17 ◽  
Author(s):  
RK Kundra ◽  
JD Moorehead ◽  
N Barton-Hanson ◽  
SC Montgomery
Keyword(s):  
Anterior Cruciate Ligament ◽  
Tracking System ◽  
Cruciate Ligament ◽  
Magnetic Tracking ◽  
Lachman Test ◽  
Acl Deficiency ◽  
Anterior Tibial ◽  
Anterior Cruciate ◽  
Tracking Device ◽  
Acl Deficient

INTRODUCTION The Lachman test is commonly performed as part of the routine assessment of patients with suspected anterior cruciate ligament (ACL) deficiency. A major drawback is its reliance on the clinician's subjective judgement of movement. The aim of this study was to quantify Lachman movement using a magnetic tracking device thereby providing a more accurate objective measure of movement. PATIENTS AND METHODS Ten patients aged 21–51 years were assessed as having unilateral ACL deficiency with conventional clinical tests. These patients were then re-assessed using a Polhemus Fastrak™ magnetic tracking device. RESULTS The mean anterior tibial displacement was 5.6 mm (SD = 2.5) for the normal knees and 10.2 mm (SD = 4.2) for the ACL-deficient knees. This gave an 82% increase in anterior tibial displacement for the ACL deficient knees. This was shown to be highly significant with P = 0.005. CONCLUSIONS The magnetic tracking system offers an objective quantification of displacements during the Lachman test. It is convenient, non-invasive and comfortable for the patient and is, therefore, ideally suited for use as an investigative tool.

scholarly journals Outcome Differences of Remnant- Preserving versus Non-Preserving Methods in Arthroscopic Anterior Cruciate Ligament Reconstruction: A Meta-analysis with Subgroup analysis

2020 ◽  
Vol 32 (1) ◽  
Author(s):  
Sung Hun Won ◽  
Byung-Il Lee ◽  
Su Yeon Park ◽  
Kyung-Dae Min ◽  
Jun-Bum Kim ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Acl Reconstruction ◽  
Subgroup Analysis ◽  
Observational Studies ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Meta Analysis ◽  
Lachman Test ◽  
Significant Difference ◽  
Anterior Cruciate

Abstract Purpose To analyze differences in clinical outcomes of arthroscopic anterior cruciate ligament reconstruction between remnant-preserving and non-preserving methods. Methods International electronical databases PubMed, Embase, and the Cochrane central database from January 1966 to December 2017 were searched for randomized controlled trials (RCTs) and observational studies that compared differences of clinical outcomes of ACL reconstruction with and without remnant preservation. A meta-analysis of these studies was performed to compare clinical outcomes. Subgroup analyses were conducted to evaluate the role of methodological quality in primary meta-analysis estimates. Results Five RCTs and six observational studies were included in this meta-analysis and subgroup analysis. The remnant-preserving method in arthroscopic ACL reconstruction showed a statistically significant difference compared to the non-preserving method regarding arthrometric evaluation (side-to-side difference). Lachman test, Lysholm scores, and IKDC subjective scores showed statistically minor difference in meta-analysis, but showed no significant difference in subgroup analysis. Remained parameters including pivot shift test, IKDC grades, incidence of cyclops lesion showed no statistically differences in meta-analysis or subgroup analysis. Conclusions This meta-analysis with subgroup analysis showed that arthroscopic remnant-preserving ACL reconstruction provided statistically significant but limited clinical relevance in terms of arthrometric evaluation. Results of Lachman test, Lysholm scores, and IKDC subjective scores demonstrated statistically minor differences.

What Really Happens during the Lachman Test?

2004 ◽  
Vol 32 (2) ◽  
pp. 369-375 ◽  
Author(s):  
Martin Charles Logan ◽  
Andrew Williams ◽  
Jonathon Lavelle ◽  
Wady Gedroyc ◽  
Michael Freeman
Keyword(s):  
Lachman Test

scholarly journals The Anterolateral Structure of the Knee Does Not Affect Anterior and Dynamic Rotatory Stability in Anterior Cruciate Ligament Injury: Quantitative Evaluation With the Electromagnetic Measurement System

2019 ◽  
Vol 47 (14) ◽  
pp. 3381-3388 ◽  
Author(s):  
Daisuke Araki ◽  
Takehiko Matsushita ◽  
Yuichi Hoshino ◽  
Kanto Nagai ◽  
Kyohei Nishida ◽  
...  
Keyword(s):  
Pivot Shift ◽  
Cruciate Ligament ◽  
Pivot Shift Test ◽  
Lachman Test ◽  
Electromagnetic Measurement System ◽  
The Mean ◽  
Anterior Cruciate ◽  
Electromagnetic Measurement ◽  
Tibial Translation ◽  
Acl Deficient

Background: The biomechanical function of the anterolateral structure (ALS), which includes the anterolateral joint capsule and anterolateral ligament (ALL), remains a topic of debate. Hypothesis: The ALS contributes to knee joint stability during the Lachman test and the pivot-shift test in anterior cruciate ligament (ACL)–deficient knees. Study Design: Controlled laboratory study. Methods: Fourteen fresh-frozen hemipelvis lower limbs were used. For 7 specimens, the anterior one-third of the ALS and the residual ALS were cut intra-articularly with a radiofrequency device. Subsequently, the ACL was cut arthroscopically. For the other 7 specimens, the ACL was cut first, followed by the anterior one-third of the ALS and the residual ALS intra-articularly. During the procedures, the iliotibial band (ITB) was kept intact. At each condition, the anterior tibial translation (ATT) during the manual Lachman test and the acceleration of posterior tibial translation (APT) and the posterior tibial translation (PTT) during the manual pivot-shift test were measured quantitatively with an electromagnetic measurement system. The mean values of those parameters were compared among 6 groups (ACL intact, one-third ALS cut, all ALS cut, ACL cut, ACL/one-third ALS cut, and ACL/all ALS cut). Results: The mean ATTs during the Lachman test and the mean APTs and PTTs in the ACL-cut conditions (ACL cut, ACL/one-third ALS cut, and ACL/all ALS cut) were significantly larger than those under the ACL-intact conditions (ACL intact, one-third ALS cut, all ALS cut) ( P < .01). However, no statistically significant differences were observed among the intact, one-third ALS–cut, and all ALS–cut conditions, within the ACL-intact or ACL-cut conditions. Conclusion: Intra-articular dissection of the ALS did not increase the ATT during the Lachman test or the APT and PTT during the pivot-shift test under the intact condition of the ITB, regardless of the integrity of the ACL. When the ITB is intact, the ALS does not have a significant role in either anterior or dynamic rotatory knee stability, while the ACL does. Clinical Relevance: Recent growing interest about ALL reconstruction or ALS augmentation may not have a large role in controlling either anterior or dynamic rotatory knee instability in isolated ACL-deficient knees.

scholarly journals Arthroscopic reduction and internal fixation of avulsion fracture of anterior cruciate ligament from tibial eminence with sutures by four tibial tunnels

2020 ◽  
Vol 8 (9_suppl7) ◽  
pp. 2325967120S0055
Author(s):  
Ming Zhou ◽  
Huiming Hou ◽  
Shaoyong Fan
Keyword(s):  
Internal Fixation ◽  
Avulsion Fracture ◽  
Pivot Shift ◽  
Cruciate Ligament ◽  
Lachman Test ◽  
Arthroscopic Reduction ◽  
Anterior Drawer Test ◽  
Tibial Eminence ◽  
Anterior Cruciate

Objectives: To investigate the therapeutic efficacy of arthroscopic reduction and internal fixation of avulsion fracture of anterior cruciate ligament (ACL) from tibial eminence with sutures by four tibial tunnels. Methods: Twenty five cases of avulsion fracture of ACL from tibial eminence were treated by arthroscopic reduction and internal fixation with sutures by four tibial tunnels tibial from March 2012 to March 2015.The average follow-up period was 18 months, ranging from 12 to 24 months. The follow-up assessment included anterior drawer test，Lachman test，pivot shift，Lysholm knee score and the radiological evaluation. Results: All cases successfully achieved reduction and bone union.The knee function was good.The results of anterior drawer test，Lachman test and pivot shift were negative．The preoperative and final follow-up Lysholm knee scores were ( 45.2±6.5) and ( 95.2±4.7) points respectively with statistically significant differenece (t =21. 4，P<0.05). Conclusion: The arthroscopic reduction and internal fixation of avulsion fracture of ACL from tibial eminence with sutures by fou rtibial tunnels is minimally invasive and convenient with satisfactory reduction and fixation,which can benefit the posoperative rehabilitation．It can avoid reoperation and achieve excellent results．

scholarly journals Functional result of anterior cruciate ligament reconstruction by remnant preservation in a tertiary center in Eastern India

2021 ◽  
Vol 7 (4) ◽  
pp. 820
Author(s):  
Ritwik Ganguli ◽  
Swagatam Jash
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Pivot Shift Test ◽  
Return To Sports ◽  
Lachman Test ◽  
Remnant Preservation ◽  
Graft Rupture ◽  
Tertiary Center ◽  
Anterior Cruciate

<p><strong>Background:</strong> Anterior cruciate ligament (ACL) reconstruction is one of the most common procedures in orthopaedics. Orthopaedic surgery is vastly evolving to give better functional outcome. Apart from stability, proprioception, ligament healing are important factors for return to sports. The presence of remnant containing mechanoreceptors and free neural endings can help reinnervate the ACL auto graft. Aims and objectives were to evaluate clinical outcomes in patients undergoing ACL reconstruction with remnant preservation.</p><p><strong>Methods</strong>: One hundred and six patients who underwent ACL reconstruction between April 2014 and March 2020. Among these 80 patients underwent remnant preservation. Analysis is done based on international knee documentation committee score (IKDC), modified Cincinnati knee rating system (MCKRS) and Tegner-Lysholm scoring system. Other factors are Lachman test, pivot shift test, return to sports and graft rupture rate.</p><p><strong>Results:</strong> Lachman test became negative in 98% at 12 weeks and in all the patients at 24 months post-operatively. 74 patients (92.5%) among 80 patients develop full range of knee movement after ACL surgery. Post-operative scores are 95, 93, and 92 respectively.</p><p><strong>Conclusions: </strong>Remnant preserving ACL reconstruction having excellent clinical outcome with good knee stability, early return to sports activities and no incidence of graft rupture in our series.</p>

Sign in / Sign up

Export Citation Format

Share Document