ArticleAmerican journal of biological anthropology2025
Functional Relationships Between Wrist Joint Morphology and Ulnar Deviation in Strepsirrhine Primates.
Article in American journal of biological anthropology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Functional Relationships Between Wrist Joint Morphology and Ulnar Deviation in Strepsirrhine Primates.American journal of biological anthropology · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
1 author.
Funding
Abstract
objectivesUlnar deviation is a fundamental hand movement reflecting different positional behaviors that characterize primates and other arboreal mammals. Few experimental data exist on the relationship between wrist joint morphology and ulnar deviation of the hand in living primates. This study tests functional relationships between carpal joint anatomy and the degree of ulnar deviation for eight strepsirrhine species representing major locomotor groups.
methodsPassive ranges of ulnar deviation were measured from radiographs of the hand of 25 anesthetized subjects using a motion analysis software. Position of the carpal elements was also compared in two different anatomical positions (i.e., neutral and maximal ulnar deviation).
resultsOn average, the hand of pronograde quadrupeds (Cheirogaleus, Eulemur, Hapalemur, Lemur, and Varecia) showed ulnar deviation angles ranging between 31° and 50°. Compared to pronograde quadrupeds, ulnar deviation of the hand was greater (but not statistically significant) in the vertical clinging Propithecus (49° to 59°) and greatest (and statistically significant at p < 0.01) in slow climbing Loris and Nycticebus (64° to 95°).
conclusionsThese differences in ulnar deviation of the hand closely match reported differences in proximal carpal and midcarpal joint shape in strepsirrhine primates. In pronograde quadrupedal and vertical clinging lemurs, ulnar deviation takes place mainly at the midcarpal joint, with some movement of the scaphoid and lunate at the proximal carpal joint of Propithecus. In slow climbing lorises, ulnar deviation of the hand is accompanied by equally notable movements of the carpals at both proximal carpal and midcarpal joints.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.