Oct 29, 2024 · Ulnar variance (also known as Hulten variance) refers to the relative lengths of the distal articular surfaces of the radius and ulna and is primarily a plain radiographic determination. Ulnar variance may be: Variance is independent of the length of the ulnar styloid process.

May 9, 2024 · Positive ulnar variance describes where the distal articular surface of the ulna is more than 2.5 mm distal to the articular surface of the radius. It plays important role in wrist pathology such as ulnar impaction syndromes and thinning of the …

Mar 3, 2023 · Ulnar Variance is the length of the ulna compared to the length of the radius at the wrist. Diagnosis is made radiographically with PA wrist radiographs. Positive ulnar variance indicates a longer ulna compared to the radius and a negative ulnar variance indicates a …

Jan 12, 2024 · A positive ulnar variance, indicating an ulna longer than the radius, can cause increased pressure on the ulnar side of the wrist joint. Over time, this can contribute to the development of degenerative changes, osteoarthritis, and chronic pain in the wrist.

To compare the outcomes of arthroscopic repair of peripheral ulnar-side triangular fibrocartilage complex (TFCC) tears between patients with and without ulnar-plus variance (UPV) and to identify factors associated with index surgery failure in these patients.

Forearm pronation produces a relative increase in ulnar length in relationship to the distal radius, and supination a decrease in ulnar length. Changes in ulnar variance are more pronounced with the elbow fully extended than when flexed to 90°.

Die anatomischen Varianten der Ulna werden nach Hultén eingeteilt. Die Ulna-Plusvariante beschreibt dabei den Zustand einer abnorm verlängerten Ulna. Die distale Gelenkfläche der Ulna liegt hier im Vergleich zur physiologischen Form weiter distal.

Beim Ulna-Impaction Syndrom, auch überlange Elle oder Ulna-plus Variante bezeichnet, bestehen belastungsabhängige Schmerzen am ellenseitigen Handgelenk. Ursache ist das schmerzhafte Anstoßen des Ellenkopfes bei relativ zu langer Elle gegen den Handgelenksmeniskus und der ersten Handwurzelreihe.

Purpose: To compare the outcomes of arthroscopic repair of peripheral ulnar-side triangular fibrocartilage complex (TFCC) tears between patients with and without ulnar-plus variance (UPV) and to identify factors associated with index surgery failure in these patients.

Jul 24, 2016 · The posteroanterior view of the distal forearm reveals anatomic variations in the length of the radius and the ulna, known as ulnar variance or Hulten variance. As a rule, the radial styloid process exceeds the length of the articular end of the ulna by 9 to 12 mm.