Table 2.
Summary of posterior soft tissue categorical variables
| Variable | 2 to 4 days postoperative | 3 months postoperative | Last followup | p value for trends | ||||
|---|---|---|---|---|---|---|---|---|
| Number | % | Number | % | Number | % | p value | ||
| Piriformis repair | < 0.001 | < 0.001 | ||||||
| Intact | 21 | 96 | 2 | 9 | 0 | 0 | ||
| Not intact | 1 | 5 | 20 | 91 | 22 | 100 | ||
| Piriformis atrophy* | < 0.001 | < 0.001 | ||||||
| None | 15 | 68 | 5 | 23 | 0 | 0 | ||
| Mild | 6 | 27 | 9 | 41 | 8 | 36 | ||
| Moderate | 1 | 5 | 8 | 36 | 10 | 45 | ||
| Severe | 0 | 0 | 0 | 0 | 4 | 18 | ||
| Conjoined tendon repair | < 0.001 | < 0.001 | ||||||
| Intact | 20 | 91 | 1 | 5 | 0 | 0 | ||
| Not intact | 2 | 9 | 21 | 96 | 22 | 100 | ||
| Short external rotator atrophy* | < 0.001 | < 0.001 | ||||||
| None | 18 | 82 | 5 | 23 | 1 | 5 | ||
| Mild | 4 | 18 | 8 | 36 | 5 | 23 | ||
| Moderate | 0 | 0 | 9 | 41 | 10 | 46 | ||
| Severe | 0 | 0 | 0 | 0 | 6 | 27 | ||
| Quadratus femoris repair | 0.767 | NA | ||||||
| Intact | 22 | 100 | 20 | 91 | 21 | 96 | ||
| Partially intact | 0 | 0 | 1 | 5 | 1 | 5 | ||
| Not intact | 0 | 0 | 1 | 5 | 0 | 0 | ||
| Quadratus femoris atrophy* | 1.000 | NA | ||||||
| None | 16 | 73 | 16 | 73 | 16 | 73 | ||
| Mild | 4 | 18 | 4 | 18 | 4 | 18 | ||
| Moderate | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Severe | 2 | 9 | 2 | 9 | 2 | 9 | ||
| Posterior capsule repair | 0.298 | NA | ||||||
| Intact | 21 | 96 | 16 | 73 | 17 | 77 | ||
| Partially intact | 1 | 5 | 4 | 18 | 4 | 18 | ||
| Not intact | 0 | 0 | 2 | 9 | 1 | 5 | ||
Short external rotators = obturator internus, superior and inferior gemelli muscles; *modified classification of Goutallier et al. [7]: Grade 0 = None; Grade 1 = Mild; Grade 2 or Grade 3 = Moderate; Grade 4 = Severe; NA = not applicable.