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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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Impact occurs when two bodies collide, leading to the application of impulsive forces between them. Analyzing impact mechanics involves considering two colliding particles moving along a line known as the line of impact, which passes through their centers and is perpendicular to the contact plane.
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Metacarpal Small Incision for Carpal Tunnel Syndrome
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Ulnocarpal Impaction.

Nico Leibig1, Florian M Lampert1, Max Haerle1

  • 1Centre for Hand and Plastic Surgery, Orthopedic Clinic Markgröningen, Kurt-Lindemann-Weg 10, 71706 Markgröningen, Germany.

Hand Clinics
|October 4, 2021
PubMed
Summary
This summary is machine-generated.

Ulnocarpal impaction syndrome causes ulnar-sided wrist pain due to ulnar head and lunotriquetral complex abutment. Treatment focuses on reducing load on the lunate through surgical procedures.

Keywords:
Hamate tip syndromeUlna abutmentUlnar shorteningUlnar-sided wrist painWafer procedureWrist arthroscopy

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Area of Science:

  • Orthopedic Surgery
  • Musculoskeletal Disorders
  • Biomechanics

Background:

  • Ulnocarpal impaction syndrome is a frequent cause of ulnar-sided wrist pain.
  • It results from abutment between the ulnar head and the lunotriquetral complex.
  • Pain is exacerbated by forearm loading and rotation.

Purpose of the Study:

  • To summarize the etiology, diagnosis, and treatment of ulnocarpal impaction syndrome.
  • To highlight the role of imaging in diagnosis.
  • To outline surgical management strategies.

Main Methods:

  • Review of radiographic findings, including positive ulnar variance and lunate cysts.
  • Magnetic Resonance Imaging (MRI) for detecting edema in the ulnoproximal lunate.
  • Discussion of surgical interventions.

Main Results:

  • Radiographs may show positive ulnar variance and cysts.
  • MRI can reveal edema in the ulnoproximal lunate.
  • Surgical options aim to decrease load on the lunate.

Conclusions:

  • Ulnocarpal impaction syndrome requires accurate diagnosis through clinical and imaging findings.
  • Surgical treatment, such as ulnar shortening osteotomy or arthroscopic wafer procedure, is effective in managing symptoms.