A V shape with a P apices on either side of the middle phalanges in digits 2-5.
Pain and stiffness in the joints.
The connections between the digital sheaths and the common flexor sheath.
Fifth metacarpal.
Two medial and lateral collateral ligaments.
Inflammation of the digital synovial sheaths.
Pain and swelling in the digits.
Abductor digiti minimi, Flexor digiti minimi, Opponens digiti minimi.
From the superficial branch of the radial artery.
Two branches that run alongside the thumb.
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Flexor digitorum profundus.
Scaphoid, Lunate, Triquetral, Pisiform.
It is continuous with the fibrous digital sheaths.
Flexion, extension, adduction, abduction, and circumduction.
Head (distal), Shaft, Base (proximal).
Thenar eminence and hypothenar eminence.
A nodule due to inflammation of FDS or FPS tendons.
Another snap occurs as the tendon moves.
Proper palmar digital arteries, which run alongside the 2nd to 5th digits.
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Loss of sensation or motor function.
Inflammation and swelling of tendon synovial sheaths, painful movements.
It is centrally located in the palm.
Flexor pollicis brevis.
Head (distal), Shaft, Base (proximal).
Lateral two lumbricals and thenar muscles.
It can occur after riding bicycles for long distances and pushing pressure on the hooks of hamates from handlebar grip.
Recurrent branch of median nerve (C8-T1) and deep branch of ulnar nerve (C8-T1).
Attached to tendons of flexor digitorum superficialis.
Alongside the metacarpals.
Injuries to the tendons can affect hand function.
Synovial sheaths.
Adductor pollicis.
Articulations between the head of the metacarpals and the base of the proximal phalanges.
Carpal tunnel.
Compression of the ulnar nerve in Guyon’s canal.
Flexor retinaculum.
Surgical excision of all fibrotic parts to free the fingers.
Direct continuation of the ulnar artery.
Palmar surface of the thumb (1st metacarpal).
Ulnar nerve.
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Extension.
Because the 2nd, 3rd, and 4th fingers almost always have separate synovial sheaths.
Extensor pollicis longus, Extensor pollicis brevis, Abductor pollicis longus.
First metacarpal.
Cutaneous innervation to the skin of the hand.
Flexion and extension.
Medial and lateral rotation.
Flexor sheaths.
Abductor pollicis brevis.
Flexor pollicis longus.
Four (thumb has none).
Articulations between the head of the middle phalanx and the base of the distal phalanx.
Progressive shortening, thickening, and fibrosis of the palmar fascia and aponeurosis.
Contraction of the tendons.
Abduct digits 2-4 (DAB).
Deep palmar arch.
Opposition.
Carpal tunnel syndrome.
It can spread to the common flexor tendon and through the palm into the carpal tunnel and into the forearm.
It covers the soft tissue of the palm and the long flexor tendons.
They pass under the flexor retinaculum.
It can only perform flexion and extension.
Two medial and lateral collateral ligaments.
Opponens pollicis, Abductor pollicis brevis, Flexor pollicis brevis.
Thickening of digital sheaths on the palmar aspect of the hand leading to stenosis.
Deep to the long flexor tendons.
Adduction.
Deformity or impaired movement.
The synovial sheath of the thumb is continuous with the flexor pollicis longus sheath.
Trapezium, Trapezoid, Capitate, Hamate.
Guyon’s canal.
Dorsal surface: medial dorsal hand, all of digit 5, medial half of digit 4; Palmar surface: digit 5 and medial half of digit 4, medial palm.
Because the palmar cutaneous branch branches off before the median nerve enters the carpal tunnel.
Two medial and lateral collateral ligaments.
It pulls the 4th and 5th fingers into partial flexions at the MCP and PIP joints.
Princeps pollicis.
They accompany and are named the same as the major arteries.
Flexion.
Ligamentous structures including the flexor retinaculum and fibrous digital sheaths.
It is a direct continuation of the antebrachial fascia and the fascia of the dorsum of the hand.
It is continuous with the flexor retinaculum and the tendon of the palmaris longus.
Flexor digitorum superficialis and profundus tendons.
Five.
Flexion and extension.
A fibrous tissue structure in the palm of the hand.
Deep branch of ulnar nerve (C8-T1).
Between the palmar aponeurosis and the long flexor tendons.
An artery that originates from the deep palmar arch but can also come from princeps pollicis.
Abduction.
Distal interphalangeal joints.
Abductor pollicis longus.
Opponens pollicis.
Five.
Sensory innervation to the center of the palm and most of digits 1-3.
Repetitive forceful use of fingers.
Intrinsic muscle of the thumb, not part of the thenar eminence.
Adduct digits 2, 4, and 5 (PAD).
From the deep branch of the ulnar artery.
Proximal interphalangeal joints.
Puncture wound to the finger with bacterial invasion.
1st dorsal interosseous.
Five.
Motor innervation to hypothenar muscles, medial 2 lumbricals, interossei muscles, and adductor pollicis.
Articulations between the head of the proximal phalanx and the base of the middle phalanx.
Digital tenovaginitis stenosans.
Unknown, but some indications suggest it is hereditary; more common in men under 50 and often bilateral.
An audible snap.
The superficial palmar arch.
Along the lateral side of the index finger.
Sensory loss on the medial side of the hand and weakness in medial intrinsic muscles; clawing of the 4th and 5th fingers with severe compression.
Painless, nodular thickening of the palmar aponeurosis.
Lateral 2 by median nerve, medial 2 by deep branch of ulnar nerve.
Direct continuation of the radial artery.
