Arthroscopic treatment options for irreparable rotator cuff tears of the shoulder

Table 3 Results of Xenograft interposition

Study	Number	Ave age (yr)	F/U(mo)	Outcome scorePre/post/P value	ROMPre/post/P value	Conclusion
Badhe et al[51] PDC (Permacol)	10	65.7	54	Constant: 42/62/P = 0.0004	Post-operative: Active abd: 89 Passive abd: 98	Porcine dermal collagen is effective as an augmentation graft in the treatment of chronic extensive rotator cuff tears, providing excellent pain relief with a moderate improvement in active ranges of motion and strength
Soler et al[52] PDC (Permacol)	4	76		Reduced range and strength, increased pain	Mean active ER: 50 Not recorded	While the use of porcine dermal collagen (Permacol) has many obvious advantages, we do not advocate using it to bridge irreparable defects

PDC: Porcine dermal collagen; FF: Forward flexion; Abd: Abduction; ER: External rotation.