Is metaphyseal ulnar shortening osteotomy superior to diaphyseal ulnar shortening osteotomy in the treatment of ulnar impaction syndrome? A meta-analysis

Table 3 General patient information of the included studies

Ref.	No. of patients	Gender (male/female)	Age (mean yr)	Follow-up time (mo)	After injury (mo)	No. of patients who underwent MUSO	No. of patients who underwent DUSO
Bernstein et al[4], 2004	27	13/14	37.6	17.4	13.8	11	16
Marquez-Lara et al[12], 2017	35	17/18	43.9	18.5	Not reported	14	21
Sennwald et al[10], 2013	29	45277	42.9	54	5.5	16	13
Constantine et al[41], 2000	22	45152	40.5	36	Not reported	11	11
Smet et al[11], 2014	40	45229	40.4	29	Not reported	12	28
Oh et al[9], 2018	42	17/25	53.6	35.5	29.5	19	23

MUSO: Metaphyseal ulnar shortening osteotomy; DUSO: Diaphyseal ulnar shortening osteotomy.