ArticleWorld journal of orthopedics2026
Does surgeon handedness affect the outcomes after primary total knee arthroplasty? A retrospective cohort study.
Article in World journal of orthopedics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundVarious factors affecting the outcomes after primary total knee arthroplasty (TKA) have been investigated in the literature; however, the effect of surgeon handedness on outcomes has rarely been addressed.
aimTo assess whether the radiological and functional outcomes differ between right and left primary TKA when operated by right-handed surgeons.
methodsA retrospective evaluation of 370 TKAs performed by right-handed surgeons [47.8% right TKAs, dominant side (Group D), and 52.2% left TKAs, non-dominant side (Group N)]. The radiological outcomes were the overall alignment measured as the hip-knee-ankle (HKA) angle, and the tibial and femoral component alignment in the coronal plane measured as the medial tibial proximal angle (MPTA) and mechanical lateral distal femoral angle (mLDFA). The percentage of each alignment outside the accepted safe zone values (outliers) were calculated. The functional outcome at the last follow up was evaluated per the Knee Society Score (KSS) System for 206 knees only.
resultsThere were no difference in patients' basic characteristics or in postoperative radiological or functional outcomes between Group D and Group N as follows: HKA, 177.96° ± 3.13°
conclusionThe overall radiological and functional outcomes after primary TKA were unaffected by the surgeon's handedness; however, the placement of the tibial component was significantly more precise on the dominant side with fewer outliers.
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