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Topic: Semimembranosus

In the News (Mon 19 Aug 19)

  III. Syndesmology. 7b. The Knee-joint. Gray, Henry. 1918. Anatomy of the Human Body.
Behind the capsule consists of vertical fibers which arise from the condyles and from the sides of the intercondyloid fossa of the femur; the posterior part of the capsule is therefore situated on the sides of and in front of the cruciate ligaments, which are thus excluded from the joint cavity.
Medially, expansions from the Sartorius and Semimembranosus pass upward to the tibial collateral ligament and strengthen the capsule.
Rotation outward is effected by the Biceps femoris, and rotation inward by the Popliteus, Semitendinosus, and, to a slight extent, the Semimembranosus, the Sartorius, and the Gracilis.
www.bartleby.com /107/93.html   (3093 words)

 VI. The Arteries. 6c. The Popliteal Artery. Gray, Henry. 1918. Anatomy of the Human Body.
On its medial side, above, are the Semimembranosus and the medial condyle of the femur; below, the tibial nerve, the popliteal vein, and the medial head of the Gastrocnemius.
The medial superior genicular runs in front of the Semimembranosus and Semitendinosus, above the medial head of the Gastrocnemius, and passes beneath the tendon of the Adductor magnus.
It divides into two branches, one of which supplies the Vastus medialis, anastomosing with the highest genicular and medial inferior genicular arteries; the other ramifies close to the surface of the femur, supplying it and the knee-joint, and anastomosing with the lateral superior genicular artery.
www.bartleby.com /107/159.html   (941 words)

The floor is formed, from superior to inferior, by the popliteal surface of the femur, the oblique popliteal ligament (an expansion of the semimembranosus tendon), and fascia overlying the popliteus muscle.
The knee joint capsule, thin and partly deficient, is attached to the margins of the condyles of the femur, to the patella and patellar ligament, and to the condyles of the tibia.
The capsule is strengthened by retinacula derived from the vasti and by an expansion (oblique popliteal ligament) from the semimembranosus tendon.
www.dartmouth.edu /~humananatomy/part_3/chapter_15.html   (5580 words)

 Sonography of the Medial and Lateral Tendons and Ligaments of the Knee: The Use of Bony Landmarks as an Easy Method for ...
the medial epicondyle on the femur and the sulcus for the semimembranosus
—Sulcus for semimembranosus in 34-year-old man. MR image (TR/TE, 2900/15) reveals posteromedial meniscus (bowed arrow) and sulcus for semimembranosus (arrowheads) in addition to semimembranosus (star), gracilis (curved arrow), and semitendinosus (short arrow) tendons.
Superior to the sulcus for the semimembranosus tendon, the posteromedial aspect
www.ajronline.org /cgi/content/full/178/6/1437   (3417 words)

 injurytreatment.com.au > Expert's Say > Muscular System
The insertion of the semimembranosus is on the medial condyle of the tibia allowing, as the main mass of muscle, for the muscles action.
Its action is the same as the semimembranosus as it flexes the knee with extension and medial rotation at the hip.
The semimembranosus and the semitendinosus are both innervated by the same nerve.
www.injurytreatment.com.au /home/experts/muscularsystem   (1246 words)

 hamsting pain treatment and exercises
The hamstrings consist of three muscles that run from the hip to the knee and assist with hip extension and knee flexion: the semitendinosus, the semimembranosus, and the biceps femoris (figure 2).
The semimembranosus muscle forms the bulk of the mass of the muscle group.
Both the semimembranosus and semitendinosus are innervated by the tibial portion of the sciatic nerve.
www.bcdaaa.org /injury.htm   (2223 words)

 Hamstring Strain Pathology - Massage Magazine
The hamstring muscle group is composed of three posterior thigh muscles: the semitendinosus and semimembranosus on the medial side and the biceps femoris on the lateral side.
The semitendinosus and semimembranosus both originate on the ischial tuberosity and insert on the medial portion of the proximal tibia.
The semimembranosus and semitendinosus medially rotate the knee while the biceps femoris laterally rotates it.
www.massagemag.com /Magazine/2005/issue115/assess115.2.php   (826 words)

 Building Bigger Stronger Thigh Muscles: Hamstrings
Since the semimembranosus crosses both the hip and knee joints, it extends the thigh, flexes the knee and medially rotates the foot inward.
The semimembranosus and semitendinosus are known as the “medial hamstrings”.
If hamstring weakness is on one side, it may present as an anterior rotation of the hip bone (technically: the hip bone is referred to as the “innominate bone”, made up of the iluim, ischium and pubis).
www.ifpa-fitness.com /IFPA-FitBits/fit-bits_archives/ifpa_fitbits_Building_Bigger_Stronger_Thigh_Muscles_Hamstrings.htm   (931 words)

 Strength, Flexibility and Timing in the Eggbeater Kick
Both the semimembranosus and semitendinosus flex the knee and medially rotate the leg as well as having a hip extension influence.
Thus the semitendinosus and semimembranosus play an important role in maintaining foot speed during this phase of the cycle in which favourable pitch angles ensure the generation of upward forces.
Given that inward rotation is required at the beginning of knee flexion, we would expect increasing activity and involvement of the biceps femoris towards the end of the period of knee flexion.
www.coachesinfo.com /category/water_polo/5   (3001 words)

The semimembranosus flexes and ___________ the knee, and extends and ______________ the hip.
The semimembranosus has a shorter distal tendon and can be palpated deep to the semitendinosus tendon.
Semimembranosus, semitendinosus, popliteus, gracilis, and sartorius internally rotate the tibia in the open chain.
www.uvm.edu /~gwu/120lect_ThighMMT.html   (1388 words)

 New York School Of Regional Anesthesia - Simplified Landmarks For Popliteal Block
The reasons for the infrequent use of this block may be related to inadequate training of residents (2), concerns over operating room efficiency and a highly variable success rate of the block (2-4).
We speculate that the main reason for difficulty in localizing the sciatic nerve using the classical approach is an inability to accurately identify the boundaries of the popliteal fossa triangle.
The base of the triangle is formed by the popliteal fossa crease and the sides by the semitendinosus and semimembranosus muscles medially and the biceps femoris muscle laterally.
www.nysora.com /publications/landmarks_popblock   (1999 words)

 Upper Leg
The muscle fibers extend downward from the knee to the middle of the outer condyle of the femur (upper leg bone).
The tendon of the semimembranosus muscle, along with the semitendinosus and gracilis, form the inner hamstring.
Its tendon, along with the tendons of the semimembranosus and the gracilis, form the inner hamstring.
www.american.edu /adonahue/m3upperleg.htm   (1922 words)

 Baker's Cyst / Popliteal Cysts - Wheeless' Textbook of Orthopaedics
- a type of cyst which results from egress of fluid through a normal communication of a bursa (semimembranosus or medial gastrocnemius bursa) or may be
- later is a double bursa located between the semimembranosus tendon and the medial head of the gastrocnemius;
- cyst is locacted between the semimembranosus tendon and the medial head of gastrocnemius tendon;
www.wheelessonline.com /ortho/bakers_cyst_popliteal_cysts   (994 words)

 UAMS Gross Anatomy
semitendinosus m., semimembranosus m., biceps femoris m., ischioconylar part of the adductor magnus m.; its branches supply all muscles of the leg and foot
semimembranosus m., semitendinosus m., long head of biceps femoris m., ischiocondylar portion of adductor magnus m.; mm.
the shallow depression on the posterior surface of the knee; its boundaries are: superomedial - tendons of semimembranosus and semitendinosus mm., superolateral - tendon of biceps femoris m., inferior - medial and lateral heads of the gastrocnemius m.
anatomy.uams.edu /anatomyhtml/postthigh.html   (1518 words)

 In vivo and in vitro heterogeneity of segment length changes in the semimembranosus muscle of the toad -- Ahn et al. ...
In the present study, we examine the behaviour of multiple, adjacent segments along the semimembranosus (SM) muscle of toads during hopping (in vivo) and subsequently while isolated with imposed stimulation and length conditions (in vitro).
For the five individuals in which all three segments were measured, the sum of the segments comprised 70.1 ± 7.2 % of the length of the muscle fibres.
However sometimes, strain at the end of the hop was variable depending on the position of the leg during landing and re-positioning of the leg in preparation for the next hop.
jp.physoc.org /cgi/content/full/549/3/877   (7505 words)

 Knee Motions
Semitendinosus: proximal shaft of the tibia and pes anserine
Semimembranosus: medial condyle of the tibia and the lateral condyle of the femur
Patient positioning is the same as above except to isolate the semitendinosus and semimembranosus the leg should be internally rotated.
www.lhup.edu /yingram/jennifer/webpage/knee_motions.htm   (465 words)

 Anatomy of the Knee
This group is comprised of the biceps femoris, semitendinosus, and the semimembranosus muscles.
While the semitendinosus and semimembranosus muscles also have an additional role of internally rotating the tibia.
The deep infrapatellar bursa is situated between the proximal tibia and the patellar ligament.
www.uoregon.edu /~athmed/aclrehab/anat.html   (1229 words)

 Hamstring Injuries
The hamstring group is made up of three muscles: the semimembranosus, semitendinous, and the two heads of the biceps femoris.
The semimembranosus and the semitendinous are the medial hamstrings, and the two-headed biceps femoris is the lateral hamstring.
Since the hamstring group is a muscle, the correct term for an injury is hamstring strain.
www.chiroweb.com /archives/08/16/14.html   (722 words)

 Hamstring Muscle Complex: An Imaging Review -- Koulouris and Connell 25 (3): 571 -- RadioGraphics
The origin of the semimembranosus muscle is noted to be superolateral to the conjoint tendon.
bulbous, with the semimembranosus tendon lying anterior to it.
Avulsions of the posteromedial tibial plateau by the semimembranosus tendon: diagnosis with MR imaging.
radiographics.rsnajnls.org /cgi/content/full/25/3/571   (6799 words)

 Force generation, but not myosin ATPase activity, declines with age in rat muscle fibers -- Lowe et al. 283 (1): C187 ...
from semimembranosus muscles of aged and young adult rats.
None of the semimembranosus fibers studied expressed type I MHC, and <10% expressed type IIA MHC, as determined by gel electrophoresis.
The uncoupling of force and ATP utilization in fibers from aged animals is illustrated in Fig.
ajpcell.physiology.org /cgi/content/full/283/1/C187   (3745 words)

 Growth factor messenger RNA levels in muscle and liver of steroid-implanted and nonimplanted steers -- White et al. 81 ...
The IGF-I protected fragment and the cyclophilin protected fragment are labeled in the C and I lanes.
Data shown are from a single RPA done on all steers and are representative of results obtained from three separate RPA each of which included all steers.
Average steady-state IGFBP-3, IGFBP-5, myostatin, and hepatocyte growth factor (HGF) messenger RNA (mRNA) levels in semimembranosus muscles from nonimplanted steers (Nonimplanted) and from steers implanted for 32 to 38 d with trenbolone acetate/estradiol (Implanted).
jas.fass.org /cgi/content/full/81/4/965   (4927 words)

 Muscle activity and aging affect myosin structural distribution and force generation in rat fibers -- Lowe et al. 96 ...
Note lower fraction of myosin heads in the strong-binding (force-generating) structural state during maximal isometric contraction in fibers from denervated muscle (21.8%) than in fibers from contralateral control muscle (33.4%).
Contraction spectrum is closer to relaxation spectrum in denervated muscle than in the control example, showing that fewer myosin heads are in the strong-binding structure and, conversely, more are in the weak-binding structure during contraction after denervation.
semimembranosus muscles from young adult and aged animals was
jap.physiology.org /cgi/content/full/96/2/498   (6402 words)

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