Ankle Joint: Difference between revisions
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=== Joint Capsule and <span style="line-height: 1.5em;">Ligaments</span><br> === | === Joint Capsule and <span style="line-height: 1.5em;">Ligaments</span><br> === | ||
==== '''Joint Capsule''' ==== | ==== '''Joint Capsule''' ==== | ||
The articular capsule surrounds the joints, and is attached, above, to the borders of the articular surfaces of the tibia and malleoli; and below, to the talus around its upper articular surface. The joint capsule anteriorly is a broad, thin, fibrous layer, posteriorly the fibres are thin and run mainly transversly blending with the transverse ligamanet and laterally the capsule is thickened, and attaches to the hollow on the medial surface of the lateral malleolus. The synovial membrane extends superiorly between Tibia & Fibula as far as the Interosseous Tibiofibular Ligament.<ref name="Essential Clinical Anatomy">Moore KL, Agur AMR, Dalley AF. Essential Clinial Anatomy. Baltimore: Lippincott Williams and Wilkins, 2011.</ref><br> | The articular capsule surrounds the joints, and is attached, above, to the borders of the articular surfaces of the tibia and malleoli; and below, to the talus around its upper articular surface. The joint capsule anteriorly is a broad, thin, fibrous layer, posteriorly the fibres are thin and run mainly transversly blending with the transverse ligamanet and laterally the capsule is thickened, and attaches to the hollow on the medial surface of the lateral malleolus. The synovial membrane extends superiorly between Tibia & Fibula as far as the Interosseous Tibiofibular Ligament.<ref name="Essential Clinical Anatomy">Moore KL, Agur AMR, Dalley AF. Essential Clinial Anatomy. Baltimore: Lippincott Williams and Wilkins, 2011.</ref><br> | ||
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==== '''Medial Ligaments of Ankle''' ==== | ==== '''Medial Ligaments of Ankle''' ==== | ||
Known collectively as the Deltoid Ligament the medial ligaments of the ankle attaches proximally to the Medial Malleolus and fan out to attach distally to the Talus, Calcaneus and Navicular via four adjacent and continuous parts. The deltoid ligament is triangular in shape and consists of a superficial and deep layer which connect the talus to the medial malleolus. It reinforces the joint capsule medially. Stabilise’s the ankle joint during eversion of the foot and prevents subluxation of the ankle joint. <ref name="Essential Clinical Anatomy" /><br> | Known collectively as the Deltoid Ligament the medial ligaments of the ankle attaches proximally to the Medial Malleolus and fan out to attach distally to the Talus, Calcaneus and Navicular via four adjacent and continuous parts. The deltoid ligament is triangular in shape and consists of a superficial and deep layer which connect the talus to the medial malleolus. It reinforces the joint capsule medially. Stabilise’s the ankle joint during eversion of the foot and prevents subluxation of the ankle joint. <ref name="Essential Clinical Anatomy" /><br> | ||
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<br> | <br> | ||
=== Muscles<br> === | === Muscles<br> === | ||
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=== Nerve Supply === | === Nerve Supply === | ||
Common Peroneal Nerve<br>Tibial Nerve | Common Peroneal Nerve<br>Tibial Nerve | ||
== Function == | == Function == | ||
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10 ° Plantarflexion | 10 ° Plantarflexion | ||
=== Structures Limiting Movement === | |||
=== Function === | === Function === |
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Description[edit | edit source]
Anatomy[edit | edit source]
Articulating Surfaces[edit | edit source]
Trochlea of Talus
Malleolar Mortis formed by Tibia & Fibula
Lateral & Medial Malleolus
Joint Capsule and Ligaments
[edit | edit source]
Joint Capsule[edit | edit source]
The articular capsule surrounds the joints, and is attached, above, to the borders of the articular surfaces of the tibia and malleoli; and below, to the talus around its upper articular surface. The joint capsule anteriorly is a broad, thin, fibrous layer, posteriorly the fibres are thin and run mainly transversly blending with the transverse ligamanet and laterally the capsule is thickened, and attaches to the hollow on the medial surface of the lateral malleolus. The synovial membrane extends superiorly between Tibia & Fibula as far as the Interosseous Tibiofibular Ligament.[1]
Lateral Ligaments of Ankle[edit | edit source]
Reinforce Joint Laterally through three ligaments. These ligaments stabilize the ankle, and serve as a guide to direct ankle motion by attaching the lateral malleolus to the bones below the ankle joint. They are responsible for resistance against inversion and internal rotation stress. [1]
LIGAMENT |
DESCRIPTION | PROXIMAL ATTACHMENT | DISTAL ATTACHMENT | ROLE |
---|---|---|---|---|
Anterior Talofibular Ligament (ATFL) |
Flat Weak Band that extends Anteriomedially. Most commonly damaged ligament of the ankle. |
Lateral Malleolus | Neck of Talus |
Restrain anterior displacement of the talus in respect to the fibula and tibia. Resists Inversion in planterflexion. |
Posterior Talofibular Ligament (PTFL) |
Thick, fairly strong band that runs horizontally medially. This ligament is under greater strain in full dorsiflexion of ankle. Rarely injured because bony stability protects ligaments when ankle in dorsiflexion. |
Malleolar Fossa of Fibula | Lateral Tubercle of Talus |
Forms the back wall of the recipient socket for the talus' trochlea. Resists posterior displacement of the talus. |
Calcaneofibular Ligament (CFL) |
Round cord that passes posterioinferiorly | Tip of Lateral Malleolus | Lateral Surface of Calcaneus |
Aids Talofibular stability during Dorsiflexion. Restrain inversion of the calcaneus with respect to the fibula. Prevent Talar tilt into Inversion. |
Medial Ligaments of Ankle [edit | edit source]
Known collectively as the Deltoid Ligament the medial ligaments of the ankle attaches proximally to the Medial Malleolus and fan out to attach distally to the Talus, Calcaneus and Navicular via four adjacent and continuous parts. The deltoid ligament is triangular in shape and consists of a superficial and deep layer which connect the talus to the medial malleolus. It reinforces the joint capsule medially. Stabilise’s the ankle joint during eversion of the foot and prevents subluxation of the ankle joint. [1]
LIGAMENTS |
DESCRIPTION | PROXIMAL ATTACHMENT | DISTAL ATTACHMENT | ROLE |
---|---|---|---|---|
Anterior Tibiotalar Ligament |
Medial Malleolus |
Head of Talus |
Reinforces Ankle Joint. Control Plantarflexion & Eversion | |
Posterior Tibiotalar Ligament |
Talus Posteriorly | Control Dorsiflexion | ||
Tibionavicular Ligament |
Forms most anterior part of the Deltoid Ligament |
Dorsomedial Aspect of Navicular | Reinforces Ankle Joint | |
Tibiocalcaneal Ligament |
Very thin ligament | Sustentaculum Tali | Reinforces Ankle Joint |
Muscles
[edit | edit source]
MUSCLE |
ACTION | PROXIMAL ATTACHMENT | DISTAL ATTACHMENT | INNERVATION |
---|---|---|---|---|
POSTERIOR COMPARTMENT | ||||
SUPERFICIAL | ||||
Gastrocnemius |
Plantarflexion when Knee Extended Flexion Knee Raises Heel during Walking |
Lateral Head: Lateral Aspect Lateral Femoral Condyle Medial Head: Popliteal Surface Femur Superior to Medial Femoral Condyle |
Posterior Surface Calcaneus via Calcaneal Tendon (Achilles Tendon) |
Tibial Nerve S1-S2 |
Soleus |
Plantarflexion Steadies Leg on Foot |
Posterior Aspect of Head Fibula Superior ¼ Posterior Surface Tibia Soleal Line & Medial Border Tibia | ||
Plantaris |
Weakly Assists Gastrocnemius in Plantarflexion |
Inferior end Lateral Supracondylar Line of Femur Oblique Popliteal Ligament | ||
DEEP | ||||
Tibialis Posterior |
Plantarflexion Inversion Supports Medial Longitudinal Arch |
Interosseous Membrane Posterior Surface Tibia inferior to Soleal Line Posterior Surface Fibula |
Navicular Tuberosity Cuneiform Cuboid Bases of Metatarsals 2-4 |
Tibial Nerve L4-L5 |
Flexor Digitorum Longus |
Plantarflexion Flexion Lateral Four Digits Supports Longitudinal Arch |
Medial Part Posterior Surface Tibia inferior to Soleal Line Broad Tendon to Fibula |
Base Distal Phalanges Digits 2-4 |
Tibial Nerve S2-S3 |
Flexor Hallucis Longus |
Weak Plantarflexion Flexion Big Toe at all Joints Supports Medial Longitudinal Arch |
Inferior 2/3 Posterior Surface Fibula Inferior Part Interosseous Membrane |
Base Distal Phalanx of Big Toe | |
LATERAL COMPARTMENT | ||||
Peroneus Brevis |
Weak Plantarflexion Eversion |
Inferior 2/3 of Lateral Surface Tibia |
Dorsal Surface Tuberosity of Base 5th Metatarsal |
Superficial Peroneal Nerve (Superficial Fibular Nerve) L5 - S2 |
Peroneus Longus |
Weak Plantarflexion Eversion Supports Transverse Arch |
Head & Superior 2/3 of Lateral Surface Tibia |
Base 1st Metatarsal Medial Cuniform | |
ANTERIOR COMPARTMENT | ||||
Tibialis Anterior |
Dorsiflexion Inversion Supports Medial Longitudinal Arch |
Lateral Condyle Tibia Superior ½ Lateral Surface Tibia Interosseous Membrane |
Medial & Inferior Surfaces Medial Cuniform Base of 1st Metatarsal |
Deep Peroneal Nerve (Deep Fibular Nerve) L4-L5 |
Extensor Digitorum Longus |
Dorsiflexion Extends Lateral Four Digits |
Lateral Condyle Tibia Superior ¾ Anterior Surface Interosseous Membrane |
Middle & Distal Phalanges of Lateral Four Digits |
Deep Peroneal Nerve (Deep Fibular Nerve) L5-S1 |
Extensor Hallucis Longus |
Dorsiflexion Extends Big Toe |
Middle Part Anterior Surface Fibula Interosseous Membrane |
Dorsal Aspect of Base Distal Phalanx of Big Toe | |
Peroneus Tertius |
Dorsiflexion Aids Eversion |
Inferior 1/3 Anterior Surface Fibula Interosseous Membrane |
Dorsum Base 5th Metatarsal |
Blood Supply[edit | edit source]
Derived from Malleolar Branches of:
Peroneal Artery
Tibial Artery
Nerve Supply[edit | edit source]
Common Peroneal Nerve
Tibial Nerve
Function[edit | edit source]
Motions Available[edit | edit source]
Talocrural Joint is a uniaxial hinge joint which has just 1° of Motion
Dorsiflexion 0° - 20°
Plantarflexion 0° - 50°
Closed Packed Position[edit | edit source]
Maximum Dorsiflexion
Open Packed Position[edit | edit source]
10 ° Plantarflexion
Structures Limiting Movement[edit | edit source]
Function[edit | edit source]
Clinical Examination[edit | edit source]
Pathology/Injury
[edit | edit source]
Physiotherapeutic Techniques[edit | edit source]
Procedures[edit | edit source]
Resources[edit | edit source]
Recent Related Research (from Pubmed)[edit | edit source]
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Anatomy of the Ankle Ligaments: A Pictorial Essay
In this pictorial essay, the ligaments around the ankle are grouped, depending on their anatomic orientation, and each of the ankle ligaments is discussed in detail.
Lower Limb Landing Biomechanics in Subjects with Chronic Ankle Instability.
Effect of Tape on Dynamic Postural Stability in Subjects with Chronic Ankle Instability.
Immediate weight-bearing after ankle fracture fixation.
Assessment of standing balance in patients after ankle fractures.
References[edit | edit source]
References will automatically be added here, see adding references tutorial.