Posterolateral aspect and stability of the knee joint. I. Anatomy and function of the popliteus muscle-tendon unit: an anatomical and biomechanical study

2002 ◽  
Vol 10 (2) ◽  
pp. 86-90 ◽  
Author(s):  
Karin Ullrich ◽  
Wilfried K. Krudwig ◽  
Ulrich Witzel
Keyword(s):  
Knee Joint ◽  
Biomechanical Study ◽  
And Function ◽  
Popliteus Muscle

Internal Structural Connections in the Popliteal Muscle Tendon Complex and Their Clinical Significance

2021 ◽  
Author(s):  
WenBin Jiang ◽  
Shi-Zhu Sun ◽  
Ting-Wei Song ◽  
Chan Li ◽  
Wei Tang ◽  
...  
Keyword(s):  
Connective Tissue ◽  
Knee Joint ◽  
Tibial Plateau ◽  
Lateral Meniscus ◽  
Posterior Edge ◽  
Dense Connective Tissue ◽  
Human Knee ◽  
Articular Capsule ◽  
Adjacent Structures ◽  
Popliteus Muscle

Abstract Background:The popliteal muscle-tendon complex (PMTC) belongs to the deep structure of the posterolateral complex (PLC) of human knee, which plays an important role in the posterolateral stability of the knee joint. At present, the anatomical relationship between the popliteal muscle and its adjacent structures remains controversial, especially the posterior cruciate ligament (PCL) and popliteal muscle. The revealation of anatomical connection between the popliteus muscle and its deep structures could provide an anatomical basis for the reconstruction of the PLC injury.Methods: To observe and analyze the relationship between popliteal muscle and the PCL, posterior meniscofemoral ligament (PMFL), lateral meniscus and articular capsule (AC). The dissection of 7 cases of adult human knee joint fixed with formalin, and 9 cases of sagittal P45 plastinated section of the knee joint were involved in this study. Results: For the popliteal muscle, the anatomical dissection showed that at the posterior edge of the platform of the lateral condyle of the tibia, at the tendon-muscle transition, from medial to lateral, separately sent out: dense connective tissue to connect with the PCL, dense fiber bundles to connect with the PMFL, and dense connective tissue band to connect the lateral meniscus. Meanwhile, the results of the P45 section revealed that the popliteal muscle fascia ran superiorly over the posterior edge of the tibialintercondylar eminence, andturned forward to be integrated into the PCL. Laterally, near the posterior edge of the lateral tibial plateau, the popliteal tendon penetrates through the articular capsule, where two dense fiberous bundleswere given off upwards by the popliteal tendon: one was the ventral fiber bundle,which ran superiorly over the posterior edge of the tibial plateau and then moved forwards to connect with the lateral meniscus; the dorsal fibersbundle ascended directly and participated in the AC.Conclusion: Popliteus muscle was connected with PCL, AC, lateral meniscus, and PMFL via the dense connective tissues near its tendon-muscle transition.

scholarly journals Biomechanical Study of Artificial Knee Joint.

1991 ◽  
Vol 57 (542) ◽  
pp. 2555-2559 ◽  
Author(s):  
Yoshio SHIRASAKI ◽  
Tetsuya TATEISHI ◽  
Toru FUKUBAYASHI
Keyword(s):  
Knee Joint ◽  
Biomechanical Study

The Relationship Between Early-Stage Knee Osteoarthritis and Lower-Extremity Alignment, Joint Laxity, and Subjective Scores of Pain, Stiffness, and Function

2016 ◽  
Vol 25 (3) ◽  
pp. 213-218
Author(s):  
Charlie A. Hicks-Little ◽  
Richard D. Peindl ◽  
Tricia J. Hubbard-Turner ◽  
Mitchell L. Cordova
Keyword(s):  
Knee Joint ◽  
Lower Extremity ◽  
Knee Osteoarthritis ◽  
Outcome Measures ◽  
Early Stage ◽  
Joint Laxity ◽  
Knee Oa ◽  
Lower Extremity Alignment ◽  
Knee Joint Laxity ◽  
And Function

Context:Knee osteoarthritis (OA) is a debilitating disease that affects an estimated 27 million Americans. Changes in lowerextremity alignment and joint laxity have been found to redistribute the medial and/or lateral loads at the joint. However, the effect that changes in anteroposterior knee-joint laxity have on lower-extremity alignment and function in individuals with knee OA remains unclear.Objective:To examine anteroposterior knee-joint laxity, lower-extremity alignment, and subjective pain, stiffness, and function scores in individuals with early-stage knee OA and matched controls and to determine if a relationship exists among these measures.Design:Case control.Setting:Sports-medicine research laboratory.Participants:18 participants with knee OA and 18 healthy matched controls.Intervention:Participants completed the Western Ontario McMaster (WOMAC) osteoarthritis questionnaire and were tested for total anteroposterior knee-joint laxity (A-P) and knee-joint alignment (ALIGN).Main Outcome Measures:WOMAC scores, A-P (mm), and ALIGN (°).Results:A significant multivariate main effect for group (Wilks’ Λ = 0.30, F7,26 = 8.58, P < .0001) was found. Knee-OA participants differed in WOMAC scores (P < .0001) but did not differ from healthy controls on ALIGN (P = .49) or total A-P (P = .66). No significant relationships were identified among main outcome measures.Conclusion:These data demonstrate that participants with early-stage knee OA had worse pain, stiffness, and functional outcome scores than the matched controls; however, ALIGN and A-P were no different. There was no association identified among participants’ subjective scores, ALIGN, or A-P measures in this study.

The patterns of proximal attachments of the popliteus muscle: Form and function

2012 ◽  
Vol 78 (2) ◽  
pp. 221-224 ◽  
Author(s):  
Aporn Chuncharunee ◽  
Prakul Chanthong ◽  
Prasit Lucksanasombool
Keyword(s):  
Form And Function ◽  
And Function ◽  
Popliteus Muscle

scholarly journals Biomechanical Study on the Stress Distribution of the Knee Joint After Tibial Fracture Malunion with Residual Varus–Valgus Deformity

2020 ◽  
Vol 12 (3) ◽  
pp. 983-989
Author(s):  
Ming Li ◽  
Hengrui Chang ◽  
Ning Wei ◽  
Wenli Chang ◽  
Ying Yan ◽  
...  
Keyword(s):  
Stress Distribution ◽  
Knee Joint ◽  
Tibial Fracture ◽  
Valgus Deformity ◽  
Biomechanical Study

scholarly journals Influence of various laser therapy methods on knee joint pain and function in patients with knee osteoarthritis

2012 ◽  
Vol 14 (3) ◽  
pp. 269-277 ◽  
Author(s):  
Kamila Gworys ◽  
Jowita Gasztych ◽  
Anna Puzder ◽  
Przemysław Gworys ◽  
Jolanta Kujawa
Keyword(s):  
Knee Joint ◽  
Knee Osteoarthritis ◽  
Laser Therapy ◽  
Joint Pain ◽  
And Function

scholarly journals Biomechanical Study of a Tricompartmental Unloader Brace for Patellofemoral or Multicompartment Knee Osteoarthritis

2021 ◽  
Vol 8 ◽  
Author(s):  
Chris A. McGibbon ◽  
Scott Brandon ◽  
Emily L. Bishop ◽  
Chris Cowper-Smith ◽  
Edmund N. Biden
Keyword(s):  
Knee Joint ◽  
Knee Flexion ◽  
Sagittal Plane ◽  
Weight Bearing ◽  
Knee Injuries ◽  
Statistical Parameter ◽  
Quadriceps Tendon ◽  
Biomechanical Study ◽  
Contact Forces ◽  
Joint Force

Objective: Off-loader knee braces have traditionally focused on redistributing loads away from either the medial or lateral tibiofemoral (TF) compartments. In this article, we study the potential of a novel “tricompartment unloader” (TCU) knee brace intended to simultaneously unload both the patellofemoral (PF) and TF joints during knee flexion. Three different models of the TCU brace are evaluated for their potential to unload the knee joint.Methods: A sagittal plane model of the knee was used to compute PF and TF contact forces, patellar and quadriceps tendon forces, and forces in the anterior and posterior cruciate ligaments during a deep knee bend (DKB) test using motion analysis data from eight participants. Forces were computed for the observed (no brace) and simulated braced conditions. A sensitivity and validity analysis was conducted to determine the valid output range for the model, and Statistical Parameter Mapping was used to quantify the effectual region of the different TCU brace models.Results: PF and TF joint force calculations were valid between ~0 and 100 degrees of flexion. All three simulated brace models significantly (p &lt; 0.001) reduced predicted knee joint loads (by 30–50%) across all structures, at knee flexion angles &gt;~30 degrees during DKB.Conclusions: The TCU brace is predicted to reduce PF and TF knee joint contact loads during weight-bearing activity requiring knee flexion angles between 30 and 100 degrees; this effect may be clinically beneficial for pain reduction or rehabilitation from common knee injuries or joint disorders. Future work is needed to assess the range of possible clinical and prophylactic benefits of the TCU brace.

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