Joints Flashcards
Supination involves***
o Plantarflexion, adduction, inversion
Pronation involves**
o Dorsiflexion, abduction, eversion
The ACL and PCL prevent what type of motion
o Abduction and adduction at the knee
Which collateral ligament is stronger at knee ( M or L)?
o Medial collateral ligament- is attached to medial meniscus
Ankle is what type of joint and what type of motion
o Hinge
o Saggital plane of motion
What makes up the midtarsal joints
o Talo navicular joint
o Calcaneocuboid joint
Pronation and supination occur where?
Sub talar and midtarsal joints ( intertarsal)
Medial collateral ligament aka
Deltoid ligament
Stronger than lateral collateral ligament
What are the movements at the intertarsal joints
Inversion
Eversion
What kind of joint is pubic symphysis*
Fibrocartilogenous joint with disk
Whats so special about Sacroiliac joint***
It has a syndesmosis ( interosseous ligament) AND diarthrodial articulation
What is the strongest ligament of the hip
Iliofemoral ligament ( y shaped)
Iliofemoral ligament resists *
Hyper extension* (like in gluteal gait) and lateral rotation
Pubofemoral ligament resists*
Limits abduction and lateral rotation of hip
Ischiofemoral ligament limits*
Medial rotation of hip
Location of ischiofemoral ligament
Deeply- encircles neck of femur and hold femur in place ( zona orbicularis)
Ligamentum teres limits*
Slightly limits adduction of hip joint
Ligamentum teres attaches what? Enveloped by what?
Attaches head of femur to acetabulum
Synovial membrane envelops it as well as head and part of neck of femur
The knee joint is classified as
Ginglymus hinge joint
Three separate articulations of joint and their type of joint
Femoropatellar- synovial gliding joint
Medial and lateral tibiofemoral – synovial hinge joint
The capsule of the knee surrounds everything except what
Anterior aspect of knee- that’s why there is a suprapatellar bursa there
Which ligaments are intra capsular*
ACL
PCL
Which ligaments of knee are extra capsular
Ligamentum patella
Fibular collateral ligament- hyper extension
Tibial collateral ligament – hyper extension
Oblique popliteal
Arcuate ligament
What is intra articular
Menisci
Popliteus
Function of ACL
Prevents hyper extension
Function of PCL
Prevents hyperflexion
What prevents abduction adduction of knee? ( aka frontal plane range of motion)
Collateral ligaments M , L aka fibular, tibular
Is ACL or PCL ruptured more often
ACL
PCL trajectory
Posterior portion of tibia and goes superiorly and medially
Heads to MEDIAL FEMORAL CONDYLE
ACL trajectory
Posterior portion of tibia
Heads to LATERAL FEMORAL CONDYLE ( fibula)
What locks the knee
Vastus medialis
What unscrews the knee
Popliteus
The ankle mortise is more stable with the joint in*
Dorsiflexion
The deltoid (medial collateral ) ligament is composed of*
Anterior tibiotalar liagemnt (DEEP)
Posterior tibiotalar ligament (DEEP)
Tibionavicular ligament
Tibiocalcaneal ligament
The lateral collateral ligament is composed of*
Anterior talofibular ligament (ATF)
Posterior talofibilar ligament ( PTF)
Calcaneo fibular ligament ( CF)
Lateral ankle ligaments prevent what motion
Inversion of foot
Medial ankle ligaments prevent what motion
Eversion of foot
Midtarsal joints*
Talocalcanonavicular
Calcaneocuboid
Lisfranc’s joint***
Tarsometatarsal
Courses from lateral aspect of medial cuneiform and medial aspect of base of second metatarsal
Spring ligament*
Palntar calcaneonavicular ligament
Helps support the medial longitudinal arch of the foot with tibialis posterior
