ArticleBone & joint research2025
Implant design may influence knee flexor activation patterns during stair ascent and descent.
Article in Bone & joint research, 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.
- Laser scanning registration for knee arthroplasty.Bone & joint research · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aims: This study examined the effects of surgical alignment techniques and implant design on sagittal plane moments and neuromuscular control during stair navigation in total knee arthroplasty (TKA) patients. We hypothesized that alignment techniques would affect joint biomechanics and neuromuscular control, while implant design would not influence lower limb biomechanics. Methods: A total of 52 TKA patients were analyzed one year postoperatively, categorized by alignment technique (mechanical alignment (MA) or kinematic alignment (KA)) and implant design (cruciate-retaining fixed bearing (CRFB), medial congruent (MC), and medial stabilized (MS)). Each participant performed five trials of overground walking, then stair ascent and descent at their preferred speed. Sagittal plane lower limb joint moments were calculated using a six-degree-of-freedom model in Visual 3D. Surface electromyography signals were analyzed over the entire gait cycle to assess muscle activation patterns. Results: The KA alignment group demonstrated greater knee extension moments and a knee-dominant strategy compared with the ankle-dominant strategy in the MA group. Implant design did not affect extension moments, but significantly impacted neuromuscular control. Implants with greater medial anteroposterior (AP) constraint showed lower biceps femoris (BF) activation, while designs with greater AP movement required higher BF activation. Conclusion: Surgical-alignment techniques, particularly KA, significantly impacted joint biomechanics, promoting a knee-dominant strategy during stair negotiation. Implant design influenced neuromuscular control, with less stable designs requiring higher hamstring activation for stabilization. Those results highlighted the importance of considering both alignment technique and implant design in post-TKA rehabilitation.
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.