A 35-year-old male presents with a painful, swollen dorsal hand after a recent puncture wound. He exhibits increased dorsal compartment pressure, redness, and limited finger extension. His medical history includes diabetes mellitus. The clinical signs suggest dorsal compartment syndrome. What is the next best step in management to prevent tissue necrosis? A) Apply cold compresses and elevate the handB) Start corticosteroid therapy to reduce inflammationC) Order MRI to evaluate the extent of infectionD) Perform a dorsal fasciotomy to decompress the compartmentsE) Administer intravenous antibiotics and monitor closely

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D) Perform a dorsal fasciotomy to decompress the compartments.
This is an acute compartment syndrome, a surgical emergency. The clinical picture is sufficient to proceed with immediate decompression rather than delaying for MRI or observation. Fasciotomy restores perfusion and prevents irreversible muscle and nerve ischemia, necrosis, and loss of hand function. Diabetes and a puncture-associated infection increase the risk, so IV antibiotics are also appropriate, but they must not delay surgery.
Campbell's Operative Orthopaedics, p. 4074-4084: emergent fasciotomy is indicated when the clinical picture indicates compartment syndrome; delay risks loss of muscle and nerve tissue.

A 42-year-old woman with rheumatoid arthritis develops a painful swelling in the hypothenar region following minor trauma. She has a history of ulnar nerve paresthesia. Ultrasound shows fluid collection in the hypothenar space. Given her condition, which surgical approach is most appropriate for drainage? A) Endoscopic drainage through small portalsB) Ulnar approach along the ulnar border of the palm to access the hypothenar spaceC) Radial approach through the thenar eminence to avoid ulnar nerve injuryD) Dorsal incision over the fifth metacarpal to reach the hypothenar spaceE) Transverse incision across the palm to access all compartments

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B) Ulnar approach along the ulnar border of the palm to access the hypothenar space.
A hypothenar-space collection requires open drainage through an ulnar-sided palmar approach, with careful identification and protection of the ulnar nerve and vessels. This provides direct access to the involved deep space while avoiding inappropriate traversal through the thenar region or dorsal structures.
In practice, the incision is planned longitudinally in the proximal palm, often aligned near the ring-finger metacarpal axis, to safely drain the hypothenar space and limit neurovascular injury. Current Surgical Therapy, p. 978, describes a longitudinal proximal-palmar incision for hypothenar-space drainage.

A 29-year-old male with a puncture wound on the palm presents with swelling and tenderness in the midpalmar space. He reports difficulty in finger movement and increased pain. His vital signs are stable. Which anatomical structure's involvement most likely necessitates urgent surgical intervention? A) Infection spreading beneath the deep transverse metacarpal ligament causing midpalmar space abscessB) Infection involving only the dorsal extensor tendonsC) Infection confined to superficial fascia with no neurovascular compromiseD) Localized abscess limited to the skin and subcutaneous tissueE) Absence of systemic signs indicates conservative management

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A) Infection spreading beneath the deep transverse metacarpal ligament causing a midpalmar space abscess.
This describes a deep palmar-space infection, which can rapidly extend along fascial planes and impair tendon function. It requires urgent hand-surgical evaluation for incision, drainage, irrigation, cultures, and antibiotics. Stable vital signs do not exclude a dangerous deep-space abscess.
Current Surgical Therapy, p. 978: midpalmar abscesses require entry into the midpalmar space with thorough irrigation and packing.

A 50-year-old diabetic patient presents with a rapidly progressing infection involving the thenar space, with swelling, erythema, and numbness in the thumb and index finger. The flexor tendons appear swollen, and the patient shows signs of early neurovascular compromise. Which intervention is most critical at this stage? A) Order MRI to delineate the extent of infectionB) Apply topical antiseptics and immobilize the handC) Immediate surgical drainage and fasciotomy of the thenar spaceD) Start broad-spectrum antibiotics and observe for 24 hoursE) Administer corticosteroids to reduce inflammation

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C) Immediate surgical drainage and fasciotomy of the thenar space.
This is a rapidly progressive deep thenar-space infection with flexor-tendon involvement and early sensory/neurovascular compromise. It needs urgent operative source control: incision, drainage, irrigation, decompression as indicated, culture collection, and IV broad-spectrum antibiotics. MRI and antibiotics must not delay surgical management.
Current Surgical Therapy, p. 1967-1969: surgical drainage is necessary for thenar-space infections, with attention to protecting nearby median-nerve branches.

A 27-year-old male with a history of intravenous drug use develops swelling and pain in the hypothenar region. He reports numbness in the ulnar half of the hand. Examination reveals a fluctuant mass and decreased sensation. Which anatomical feature's preservation is most critical during surgical drainage? A) Superficial palmar arch in the palmB) Flexor tendons of the fingersC) Radial nerve branches supplying the dorsumD) Ulnar neurovascular bundle within the hypothenar spaceE) Dorsal venous network

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D) Ulnar neurovascular bundle within the hypothenar space.
The ulnar-sided sensory loss signals involvement or compression of the ulnar nerve. During drainage of a hypothenar-space abscess, the ulnar nerve and ulnar artery must be carefully identified and protected to avoid permanent sensory, motor, and vascular injury to the ulnar hand and intrinsic muscles.
Gray’s Anatomy for Students notes that the ulnar artery and nerve enter on the medial side of the hand, while the deep ulnar nerve branch travels with the deep ulnar artery and supplies the hypothenar muscles.

A 45-year-old man presents with swelling and redness over the dorsal hand after a laceration. He exhibits limited extension of the fingers and pain along the extensor tendons. His lab results show elevated white blood cell count. Which surgical procedure is most appropriate to treat extensor tenosynovitis? A) Conservative antibiotic therapy without surgeryB) Percutaneous needle aspiration of the dorsal compartmentsC) MRI-guided minimally invasive debridementD) Open drainage of the infected extensor tendon sheaths with careful dissectionE) Application of topical antibiotics and immobilization

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D) Open drainage of the infected extensor tendon sheaths with careful dissection.
This presentation suggests suppurative extensor tenosynovitis after a laceration. Limited finger extension, pain along extensor tendons, dorsal erythema/swelling, and leukocytosis indicate a deep tendon-sheath infection. It requires urgent open irrigation and drainage with debridement of nonviable/infected tissue, cultures, and IV antibiotics.
Antibiotics alone, aspiration, topical treatment, or delaying for MRI risk progression, tendon damage, and loss of hand function. Campbell's Operative Orthopaedics, Table 84.6, states that surgical therapy is indicated for flexor or extensor tenosynovitis.

A 38-year-old female with a suspected midpalmar space abscess shows signs of spreading infection despite antibiotics. She has a history of hand trauma. Which anatomical feature's breach most likely facilitated the spread of infection to adjacent spaces? A) Flexor retinaculumB) Palmar aponeurosisC) Dorsal extensor retinaculumD) Superficial fascia of the palmE) Deep transverse metacarpal ligament

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B) Palmar aponeurosis.
A breach of the palmar aponeurosis can permit infection from a traumatic palmar wound to enter the deep palmar fascial spaces, including the midpalmar space, and then spread through connected fascial planes. Deep-space infection that progresses despite antibiotics requires urgent hand-surgical assessment for drainage.
The midpalmar space lies deep to the palmar aponeurosis and communicates proximally with the forearm via the carpal tunnel. Current Surgical Therapy, p. 977; Gray’s Anatomy for Students, p. 959.

A 33-year-old male with a stab wound to the palm develops a swelling in the thenar space. Examination shows intact sensation over the thenar eminence but weakness in thumb opposition. Which nerve's injury explains his symptoms? A) Ulnar nerve at the elbowB) Recurrent branch of the median nerveC) Deep branch of the ulnar nerveD) Superficial branch of the radial nerveE) Median nerve trunk at the wrist

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B) Recurrent branch of the median nerve.
This is a predominantly motor branch supplying the thenar muscles, especially opponens pollicis, so its injury causes weak thumb opposition while sensation over the thenar eminence can remain intact.
Gray’s Anatomy for Students states that the thenar muscles are innervated by the recurrent branch of the median nerve and mediate thumb opposition.

A 44-year-old patient with a hand infection exhibits swelling in the hypothenar space and numbness in the ulnar fingers. The infection involves the ulnar neurovascular bundle. Which surgical consideration is most important to prevent iatrogenic injury? A) Avoiding incision near the thenar eminenceB) Incision along the dorsal hand to avoid neurovascular structuresC) Using endoscopic techniques to minimize tissue damageD) Careful dissection along the ulnar border of the palm to preserve the ulnar nerve and arteryE) Applying pressure dressings to reduce swelling

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D) Careful dissection along the ulnar border of the palm to preserve the ulnar nerve and artery.
The ulnar nerve and artery run together on the ulnar side of the palm near the hypothenar region. With sensory symptoms in the ulnar digits and infection involving this bundle, drainage must be performed with direct visualization and meticulous dissection to protect both structures.
Injury could cause permanent sensory loss, intrinsic-hand muscle weakness, and compromised perfusion. Gray’s Anatomy for Students describes the ulnar nerve and artery entering the hand on its medial side and traveling in close relationship.
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