Table 4.

Comparison with studies done using MRI.

Study	Post-op Duration	Regeneration	Isokinetic Strength
Our Study	6–12 months	Patients showing regeneration (total 55%) – 16% above knee, 7% at knee level, 32% below knee. Patients showing no regeneration – 45%	Flexion deficit No regeneration – 28.51% Above knee regeneration – 14.28% At knee level regeneration – 7.6% Below knee regeneration – 3.66%
Ahlen et al.15	6 months–11 years	88% showed semitendinosus tendon regeneration and 95% showed gracilis tendon regeneration	Significant strength deficit on involved side as compared to normal knee
Burks et al.16	6 months	Inconsistent tendon regeneration seen in 77.7% patients.	Significant strength deficit as compared to the normal knee at 6 months post-op
Choi et al.8	2 years	80% showed semitendinosus tendon regeneration and 75.6% showed gracilis tendon regeneration	Significant difference between the strength deficit in patients with regeneration and patients without regeneration
Eriksson et al.17	6–12 months	12 patients out of 16 showed regeneration of the semitendinosus	Flexion strength in the operated knee was lower as compared to the normal knee
Janssen et al.18	6–12 months	100% showed gracilis regeneration. 63.6% showed semitendinosus tendon regeneration	No significant difference between preoperative and post-operative flexion strength
Murakami et al.19	12 months	100% patients showed regeneration	Isokinetic strength of operated side was significantly lower than normal knee
Nishino et al.20	12–43 months	91.3% patients showed regeneration	Isometric flexion strength was lower in operated knee as compared to normal knee