The proximal connection of metatarsal bones and tarsal bones make up the tarsometatarsal joint complex commonly referred to as?

Appeared in: RIMS Nursing Officer - 2022

Explanation

The tarsometatarsal joint complex is the articulation between the distal row of tarsal bones (the three cuneiforms and the cuboid) and the bases of the five metatarsal bones.
This complex is clinically and anatomically referred to as the Lisfranc's joint.
The term 'Lanfranc's joint' is a common misspelling but refers to the same anatomical structure.
This joint is critical for maintaining the stability of the foot's transverse arch.

Option B: Chopart's joint, also known as the transverse tarsal joint, is located more proximally in the foot. It separates the hindfoot (talus and calcaneus) from the midfoot (navicular and cuboid).
Option C: A 'compound joint' is a general classification for a joint where more than two bones articulate. It is not the specific name for the tarsometatarsal joint complex.
Option D: Phalanx joints refer to the joints of the toes, either between the phalanges themselves (interphalangeal joints) or between the metatarsals and the phalanges (metatarsophalangeal joints).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy of the foot, specifically the tarsometatarsal joint complex as background academic context rather than a clinical decision trigger.
A Lisfranc injury (fracture-dislocation of the tarsometatarsal joint) is a severe and often missed diagnosis. Nurses must assess for key signs: midfoot swelling, inability to bear weight, and plantar ecchymosis (bruising on the sole of the foot), which is a pathognomonic sign.
Immediate nursing interventions for a suspected Lisfranc injury include RICE (Rest, Ice, Compression, Elevation), strict non-weight-bearing status, and preparing the patient for urgent imaging (weight-bearing X-rays if possible).
What if? If a patient with a suspected Lisfranc injury develops severe, escalating pain, pallor, and paresthesia in the toes, the nurse must suspect acute compartment syndrome. This is a surgical emergency requiring immediate notification of the physician to prevent permanent muscle and nerve damage.

How to Approach the Question

First, break down the question stem to identify the key anatomical structures: 'proximal connection of metatarsal bones and tarsal bones'. This points to the junction between the tarsals and metatarsals.
Recall or deduce the anatomical name for this specific junction in the foot.
Evaluate the options provided. Recognize that 'Lanfranc's joint' is a common misspelling of 'Lisfranc's joint'.
Differentiate the correct joint from other major foot joints like Chopart's joint (more proximal) and phalanx joints (more distal).
Eliminate generic terms like 'compound joint' which describe a type of joint but not a specific one by name.

Concept Tested & Keywords

Concept Tested: Anatomy of the foot, specifically the tarsometatarsal joint complex.
Stem keywords: metatarsal bones, tarsal bones, tarsometatarsal joint
Lead-in keywords: commonly referred to as

q2lp8RIiBGtfdNf2i7Mq-

E6 Physiology Ganong 27e Vol 2 Part 3 p. 32-34

E6 Osteology InderbirSingh 5e p. 163-165

E6 Anatomy BDChaurasia V2 10e Part 1 p. 54-56

Practise the full RIMS Nursing Officer - 2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.